./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2 --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 b9fbf860090144fde4aeabd07a1f215f122b8dafbd1dea66fb6a578d61759014 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:33:31,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:33:31,798 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:33:31,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:33:31,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:33:31,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:33:31,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:33:31,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:33:31,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:33:31,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:33:31,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:33:31,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:33:31,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:33:31,856 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:33:31,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:33:31,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:33:31,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:33:31,858 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:33:31,858 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:33:31,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:33:31,859 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:33:31,859 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:33:31,860 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:33:31,860 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:33:31,861 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:33:31,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:33:31,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:33:31,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:33:31,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:33:31,862 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:33:31,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:33:31,863 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:33:31,863 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_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9fbf860090144fde4aeabd07a1f215f122b8dafbd1dea66fb6a578d61759014 [2023-11-21 18:33:32,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:33:32,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:33:32,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:33:32,184 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:33:32,184 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:33:32,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i [2023-11-21 18:33:35,224 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:33:35,662 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:33:35,664 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i [2023-11-21 18:33:35,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/data/75117d4da/50e7485981624e95a849be3d46274591/FLAGc76e78654 [2023-11-21 18:33:35,749 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/data/75117d4da/50e7485981624e95a849be3d46274591 [2023-11-21 18:33:35,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:33:35,757 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:33:35,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:33:35,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:33:35,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:33:35,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:33:35" (1/1) ... [2023-11-21 18:33:35,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f99b33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:35, skipping insertion in model container [2023-11-21 18:33:35,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:33:35" (1/1) ... [2023-11-21 18:33:35,895 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:33:36,289 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:33:36,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:33:36,966 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:33:36,999 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:33:37,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:33:37,233 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:37,233 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:37,233 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:37,233 WARN L675 CHandler]: The function funcPtr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:37,234 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:37,234 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:37,234 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:37,242 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:33:37,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37 WrapperNode [2023-11-21 18:33:37,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:33:37,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:33:37,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:33:37,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:33:37,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,347 INFO L138 Inliner]: procedures = 502, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 60 [2023-11-21 18:33:37,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:33:37,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:33:37,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:33:37,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:33:37,360 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:33:37,394 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:33:37,394 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:33:37,394 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:33:37,395 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:33:37,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:33:37,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:33:37,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:33:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:33:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:33:37,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:33:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:33:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 18:33:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:33:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:33:37,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:33:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:33:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:33:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:33:37,679 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:33:37,681 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:33:37,860 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:33:37,910 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:33:37,911 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:33:37,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:33:37 BoogieIcfgContainer [2023-11-21 18:33:37,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:33:37,914 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:33:37,914 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:33:37,926 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:33:37,926 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:33:37" (1/1) ... [2023-11-21 18:33:37,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:33:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:33:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-21 18:33:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 18:33:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:33:38,010 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:33:38,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:33:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:33:38,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:33:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:33:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:33:38,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:33:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:33:38,347 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:33:38,371 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated [2023-11-21 18:33:38,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:33:38 ImpRootNode [2023-11-21 18:33:38,377 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:33:38,378 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:33:38,378 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:33:38,378 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:33:38,379 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:33:37" (3/4) ... [2023-11-21 18:33:38,381 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:33:38,382 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:33:38,383 INFO L158 Benchmark]: Toolchain (without parser) took 2626.23ms. Allocated memory is still 161.5MB. Free memory was 132.4MB in the beginning and 118.4MB in the end (delta: 14.0MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-11-21 18:33:38,384 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:33:38,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1482.82ms. Allocated memory is still 161.5MB. Free memory was 132.4MB in the beginning and 67.8MB in the end (delta: 64.6MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2023-11-21 18:33:38,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.50ms. Allocated memory is still 161.5MB. Free memory was 67.8MB in the beginning and 65.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:33:38,386 INFO L158 Benchmark]: Boogie Preprocessor took 44.00ms. Allocated memory is still 161.5MB. Free memory was 65.0MB in the beginning and 63.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:33:38,387 INFO L158 Benchmark]: RCFGBuilder took 519.54ms. Allocated memory is still 161.5MB. Free memory was 63.6MB in the beginning and 48.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 18:33:38,388 INFO L158 Benchmark]: CodeCheck took 462.86ms. Allocated memory is still 161.5MB. Free memory was 48.2MB in the beginning and 118.4MB in the end (delta: -70.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:33:38,388 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 161.5MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:33:38,392 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: 1551]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1565. 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); [L1577] 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) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={13:28}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_postdec_44_bad() [L1558] int data; [L1559] void (*funcPtr) (int) = badSink; [L1560] data = 0 [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1563] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1565] EXPR data = atoi(inputBuffer) [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561-L1571] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1572] CALL funcPtr(data) [L1551] data-- 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 0.27ms. Allocated memory is still 113.2MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1482.82ms. Allocated memory is still 161.5MB. Free memory was 132.4MB in the beginning and 67.8MB in the end (delta: 64.6MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.50ms. Allocated memory is still 161.5MB. Free memory was 67.8MB in the beginning and 65.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.00ms. Allocated memory is still 161.5MB. Free memory was 65.0MB in the beginning and 63.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 519.54ms. Allocated memory is still 161.5MB. Free memory was 63.6MB in the beginning and 48.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 462.86ms. Allocated memory is still 161.5MB. Free memory was 48.2MB in the beginning and 118.4MB in the end (delta: -70.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.91ms. Allocated memory is still 161.5MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:33:38,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2 --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 b9fbf860090144fde4aeabd07a1f215f122b8dafbd1dea66fb6a578d61759014 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:33:41,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:33:41,138 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-21 18:33:41,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:33:41,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:33:41,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:33:41,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:33:41,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:33:41,177 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:33:41,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:33:41,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:33:41,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:33:41,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:33:41,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:33:41,180 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:33:41,181 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:33:41,181 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:33:41,182 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:33:41,182 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:33:41,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:33:41,183 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:33:41,189 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:33:41,190 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:33:41,190 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:33:41,195 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:33:41,196 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-21 18:33:41,196 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:33:41,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:33:41,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:33:41,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:33:41,199 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:33:41,199 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:33:41,200 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:33:41,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:33:41,200 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-21 18:33:41,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:33:41,201 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_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9fbf860090144fde4aeabd07a1f215f122b8dafbd1dea66fb6a578d61759014 [2023-11-21 18:33:41,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:33:41,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:33:41,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:33:41,653 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:33:41,654 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:33:41,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i [2023-11-21 18:33:44,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:33:45,232 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:33:45,233 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i [2023-11-21 18:33:45,261 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/data/c173353b0/53d476878cf7423b810b81581265a46f/FLAG5a8e88005 [2023-11-21 18:33:45,277 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/data/c173353b0/53d476878cf7423b810b81581265a46f [2023-11-21 18:33:45,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:33:45,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:33:45,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:33:45,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:33:45,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:33:45,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:33:45" (1/1) ... [2023-11-21 18:33:45,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389a95dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:45, skipping insertion in model container [2023-11-21 18:33:45,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:33:45" (1/1) ... [2023-11-21 18:33:45,362 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:33:45,784 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:33:46,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:33:46,527 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:33:46,564 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:33:46,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:33:46,771 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:46,771 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:46,771 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:46,772 WARN L675 CHandler]: The function funcPtr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:46,772 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:46,772 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:46,772 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:33:46,781 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:33:46,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46 WrapperNode [2023-11-21 18:33:46,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:33:46,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:33:46,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:33:46,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:33:46,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,868 INFO L138 Inliner]: procedures = 507, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2023-11-21 18:33:46,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:33:46,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:33:46,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:33:46,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:33:46,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:33:46,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:33:46,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:33:46,911 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:33:46,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:33:46" (1/1) ... [2023-11-21 18:33:46,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:33:46,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:33:46,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:33:46,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:33:47,005 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:33:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:33:47,006 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:33:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:33:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:33:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:33:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:33:47,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:33:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:33:47,009 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:33:47,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 18:33:47,249 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:33:47,252 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:33:47,432 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:33:47,510 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:33:47,510 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:33:47,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:33:47 BoogieIcfgContainer [2023-11-21 18:33:47,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:33:47,513 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:33:47,513 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:33:47,527 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:33:47,527 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:33:47" (1/1) ... [2023-11-21 18:33:47,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:33:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:33:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-21 18:33:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 18:33:47,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:33:47,611 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:33:47,612 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:33:47,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:33:47,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:33:47,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-21 18:33:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:33:47,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:33:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:33:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:33:48,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:33:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:33:48,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-21 18:33:48,206 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:33:48,239 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post96 could not be translated [2023-11-21 18:33:48,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:33:48 ImpRootNode [2023-11-21 18:33:48,246 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:33:48,249 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:33:48,253 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:33:48,254 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:33:48,255 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:33:47" (3/4) ... [2023-11-21 18:33:48,257 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:33:48,258 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:33:48,260 INFO L158 Benchmark]: Toolchain (without parser) took 2978.01ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 56.2MB in the beginning and 67.5MB in the end (delta: -11.3MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-11-21 18:33:48,260 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 83.9MB. Free memory was 59.8MB in the beginning and 59.7MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:33:48,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1499.79ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 55.9MB in the beginning and 75.3MB in the end (delta: -19.4MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2023-11-21 18:33:48,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.62ms. Allocated memory is still 117.4MB. Free memory was 75.3MB in the beginning and 72.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:33:48,264 INFO L158 Benchmark]: Boogie Preprocessor took 39.98ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 70.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:33:48,265 INFO L158 Benchmark]: RCFGBuilder took 601.78ms. Allocated memory is still 117.4MB. Free memory was 70.0MB in the beginning and 86.4MB in the end (delta: -16.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 18:33:48,265 INFO L158 Benchmark]: CodeCheck took 733.55ms. Allocated memory is still 117.4MB. Free memory was 86.4MB in the beginning and 68.2MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:33:48,272 INFO L158 Benchmark]: Witness Printer took 9.91ms. Allocated memory is still 117.4MB. Free memory was 68.2MB in the beginning and 67.5MB in the end (delta: 705.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:33:48,282 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: 1551]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1565. 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); [L1577] 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) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_postdec_44_bad() [L1558] int data; [L1559] void (*funcPtr) (int) = badSink; [L1560] data = 0 [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1563] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1565] EXPR data = atoi(inputBuffer) [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561-L1571] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1572] CALL funcPtr(data) [L1551] data-- 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 0.73ms. Allocated memory is still 83.9MB. Free memory was 59.8MB in the beginning and 59.7MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1499.79ms. Allocated memory was 83.9MB in the beginning and 117.4MB in the end (delta: 33.6MB). Free memory was 55.9MB in the beginning and 75.3MB in the end (delta: -19.4MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.62ms. Allocated memory is still 117.4MB. Free memory was 75.3MB in the beginning and 72.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.98ms. Allocated memory is still 117.4MB. Free memory was 72.5MB in the beginning and 70.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 601.78ms. Allocated memory is still 117.4MB. Free memory was 70.0MB in the beginning and 86.4MB in the end (delta: -16.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 733.55ms. Allocated memory is still 117.4MB. Free memory was 86.4MB in the beginning and 68.2MB in the end (delta: 18.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 9.91ms. Allocated memory is still 117.4MB. Free memory was 68.2MB in the beginning and 67.5MB in the end (delta: 705.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post96 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:33:48,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3876546d-e130-4f84-892b-46bc15695e9e/bin/ukojak-verify-i0I2FZA1j2/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