./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_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_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/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_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/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_7a717059-7423-4dc1-a8c3-b1bba8d25a15/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 874c22c299d735a6f05b6f1a9ad4620ab8282997794570fca1e7032194d6643c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:02:02,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:02:02,823 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 04:02:02,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:02:02,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 04:02:02,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:02:02,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:02:02,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 04:02:02,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:02:02,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:02:02,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:02:02,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:02:02,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:02:02,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:02:02,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:02:02,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:02:02,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:02:02,871 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:02:02,871 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:02:02,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:02:02,873 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:02:02,874 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:02:02,874 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:02:02,875 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:02:02,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:02:02,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:02:02,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:02:02,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:02:02,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:02:02,878 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 04:02:02,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:02:02,883 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:02:02,885 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_7a717059-7423-4dc1-a8c3-b1bba8d25a15/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874c22c299d735a6f05b6f1a9ad4620ab8282997794570fca1e7032194d6643c [2023-11-19 04:02:03,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:02:03,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:02:03,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:02:03,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:02:03,206 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:02:03,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i [2023-11-19 04:02:06,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:02:06,976 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:02:06,977 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i [2023-11-19 04:02:07,010 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/data/0e25dc328/5f359b0ea70840d6baf5d30272b1dc0a/FLAGa979ec2d2 [2023-11-19 04:02:07,034 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/data/0e25dc328/5f359b0ea70840d6baf5d30272b1dc0a [2023-11-19 04:02:07,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:02:07,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:02:07,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:02:07,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:02:07,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:02:07,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:02:07" (1/1) ... [2023-11-19 04:02:07,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c59b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:07, skipping insertion in model container [2023-11-19 04:02:07,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:02:07" (1/1) ... [2023-11-19 04:02:07,121 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:02:07,553 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:02:08,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:02:08,246 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:02:08,279 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:02:08,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:02:08,523 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:08,524 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:08,524 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:08,524 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:08,524 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:08,525 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:08,533 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:02:08,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08 WrapperNode [2023-11-19 04:02:08,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:02:08,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:02:08,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:02:08,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:02:08,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,615 INFO L138 Inliner]: procedures = 503, calls = 67, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 58 [2023-11-19 04:02:08,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:02:08,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:02:08,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:02:08,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:02:08,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,656 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:02:08,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:02:08,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:02:08,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:02:08,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:08" (1/1) ... [2023-11-19 04:02:08,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:02:08,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:02:08,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:02:08,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:02:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:02:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:02:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:02:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:02:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:02:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:02:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:02:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:02:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:02:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:02:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:02:09,004 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:02:09,006 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:02:09,145 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:02:09,191 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:02:09,192 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:02:09,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:09 BoogieIcfgContainer [2023-11-19 04:02:09,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:02:09,201 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:02:09,202 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:02:09,212 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:02:09,212 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:09" (1/1) ... [2023-11-19 04:02:09,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:02:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:02:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 04:02:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 04:02:09,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:02:09,286 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:02:09,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:02:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:09,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:02:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:09,604 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:02:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:09,644 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 04:02:09,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 04:02:09 ImpRootNode [2023-11-19 04:02:09,689 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 04:02:09,692 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:02:09,695 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:02:09,695 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:02:09,696 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:09" (3/4) ... [2023-11-19 04:02:09,698 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:02:09,705 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:02:09,707 INFO L158 Benchmark]: Toolchain (without parser) took 2665.94ms. Allocated memory is still 169.9MB. Free memory was 135.3MB in the beginning and 79.9MB in the end (delta: 55.4MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2023-11-19 04:02:09,708 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:09,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1492.87ms. Allocated memory is still 169.9MB. Free memory was 134.8MB in the beginning and 118.9MB in the end (delta: 15.9MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2023-11-19 04:02:09,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.33ms. Allocated memory is still 169.9MB. Free memory was 118.9MB in the beginning and 115.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:02:09,711 INFO L158 Benchmark]: Boogie Preprocessor took 41.93ms. Allocated memory is still 169.9MB. Free memory was 115.6MB in the beginning and 114.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:09,712 INFO L158 Benchmark]: RCFGBuilder took 541.49ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 98.8MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:02:09,713 INFO L158 Benchmark]: CodeCheck took 487.66ms. Allocated memory is still 169.9MB. Free memory was 98.8MB in the beginning and 81.1MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:02:09,715 INFO L158 Benchmark]: Witness Printer took 12.80ms. Allocated memory is still 169.9MB. Free memory was 80.8MB in the beginning and 79.9MB in the end (delta: 901.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:02:09,728 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=31, argc=31, argv={18:30}, argv={18:30}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_53_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_53b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_53c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_53d_badSink(data) [L1587] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1492.87ms. Allocated memory is still 169.9MB. Free memory was 134.8MB in the beginning and 118.9MB in the end (delta: 15.9MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.33ms. Allocated memory is still 169.9MB. Free memory was 118.9MB in the beginning and 115.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.93ms. Allocated memory is still 169.9MB. Free memory was 115.6MB in the beginning and 114.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 541.49ms. Allocated memory is still 169.9MB. Free memory was 114.4MB in the beginning and 98.8MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 487.66ms. Allocated memory is still 169.9MB. Free memory was 98.8MB in the beginning and 81.1MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 12.80ms. Allocated memory is still 169.9MB. Free memory was 80.8MB in the beginning and 79.9MB in the end (delta: 901.7kB). 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 04:02:09,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/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_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/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_7a717059-7423-4dc1-a8c3-b1bba8d25a15/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 874c22c299d735a6f05b6f1a9ad4620ab8282997794570fca1e7032194d6643c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:02:12,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:02:12,663 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 04:02:12,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:02:12,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:02:12,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 04:02:12,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:02:12,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:02:12,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:02:12,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:02:12,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:02:12,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:02:12,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:02:12,723 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:02:12,724 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:02:12,724 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:02:12,725 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:02:12,725 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:02:12,726 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:02:12,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:02:12,727 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:02:12,728 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:02:12,728 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:02:12,729 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:02:12,729 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:02:12,730 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 04:02:12,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:02:12,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:02:12,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:02:12,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:02:12,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:02:12,734 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:02:12,734 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:02:12,735 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:02:12,735 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 04:02:12,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:02:12,736 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_7a717059-7423-4dc1-a8c3-b1bba8d25a15/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874c22c299d735a6f05b6f1a9ad4620ab8282997794570fca1e7032194d6643c [2023-11-19 04:02:13,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:02:13,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:02:13,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:02:13,153 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:02:13,154 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:02:13,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i [2023-11-19 04:02:16,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:02:16,855 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:02:16,856 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i [2023-11-19 04:02:16,902 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/data/45aa0e1f7/bc010dec61fb4f168db8c6ec61c8085f/FLAG335cc31c2 [2023-11-19 04:02:16,918 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/data/45aa0e1f7/bc010dec61fb4f168db8c6ec61c8085f [2023-11-19 04:02:16,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:02:16,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:02:16,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:02:16,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:02:16,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:02:16,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:02:16" (1/1) ... [2023-11-19 04:02:16,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60760829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:16, skipping insertion in model container [2023-11-19 04:02:16,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:02:16" (1/1) ... [2023-11-19 04:02:17,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:02:17,573 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:02:18,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:02:18,442 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:02:18,462 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:02:18,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:02:18,725 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:18,725 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:18,725 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:18,726 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:18,726 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:18,726 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:18,734 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:02:18,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18 WrapperNode [2023-11-19 04:02:18,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:02:18,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:02:18,737 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:02:18,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:02:18,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,845 INFO L138 Inliner]: procedures = 508, calls = 67, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 57 [2023-11-19 04:02:18,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:02:18,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:02:18,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:02:18,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:02:18,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:02:18,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:02:18,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:02:18,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:02:18,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:18" (1/1) ... [2023-11-19 04:02:18,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:02:18,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:02:18,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:02:18,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:02:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:02:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:02:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:02:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:02:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:02:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:02:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:02:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:02:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:02:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:02:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 04:02:19,146 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:02:19,150 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:02:19,382 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:02:19,435 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:02:19,439 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:02:19,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:19 BoogieIcfgContainer [2023-11-19 04:02:19,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:02:19,447 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:02:19,448 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:02:19,458 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:02:19,459 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:19" (1/1) ... [2023-11-19 04:02:19,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:02:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:02:19,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 04:02:19,552 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 04:02:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:02:19,559 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:02:19,559 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:02:19,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 04:02:19,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:02:19,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 04:02:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:19,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:02:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:20,027 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:02:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:20,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:02:20,099 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 04:02:20,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 04:02:20 ImpRootNode [2023-11-19 04:02:20,135 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 04:02:20,136 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:02:20,136 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:02:20,136 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:02:20,137 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:19" (3/4) ... [2023-11-19 04:02:20,139 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:02:20,140 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:02:20,141 INFO L158 Benchmark]: Toolchain (without parser) took 3219.46ms. Allocated memory is still 96.5MB. Free memory was 68.6MB in the beginning and 53.7MB in the end (delta: 14.9MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-11-19 04:02:20,142 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 62.9MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:20,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1807.24ms. Allocated memory is still 96.5MB. Free memory was 68.3MB in the beginning and 62.6MB in the end (delta: 5.7MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2023-11-19 04:02:20,143 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.41ms. Allocated memory is still 96.5MB. Free memory was 62.6MB in the beginning and 59.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:02:20,144 INFO L158 Benchmark]: Boogie Preprocessor took 43.74ms. Allocated memory is still 96.5MB. Free memory was 59.6MB in the beginning and 57.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:20,145 INFO L158 Benchmark]: RCFGBuilder took 555.45ms. Allocated memory is still 96.5MB. Free memory was 57.5MB in the beginning and 39.7MB in the end (delta: 17.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:02:20,145 INFO L158 Benchmark]: CodeCheck took 688.36ms. Allocated memory is still 96.5MB. Free memory was 39.7MB in the beginning and 53.7MB in the end (delta: -14.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:20,146 INFO L158 Benchmark]: Witness Printer took 4.79ms. Allocated memory is still 96.5MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:20,149 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_53_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_53b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_53c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_53d_badSink(data) [L1587] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 62.9MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1807.24ms. Allocated memory is still 96.5MB. Free memory was 68.3MB in the beginning and 62.6MB in the end (delta: 5.7MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.41ms. Allocated memory is still 96.5MB. Free memory was 62.6MB in the beginning and 59.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.74ms. Allocated memory is still 96.5MB. Free memory was 59.6MB in the beginning and 57.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 555.45ms. Allocated memory is still 96.5MB. Free memory was 57.5MB in the beginning and 39.7MB in the end (delta: 17.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * CodeCheck took 688.36ms. Allocated memory is still 96.5MB. Free memory was 39.7MB in the beginning and 53.7MB in the end (delta: -14.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.79ms. Allocated memory is still 96.5MB. Free memory is still 53.7MB. 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 04:02:20,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a717059-7423-4dc1-a8c3-b1bba8d25a15/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