./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_34_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi --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 ecc8bc71d47ab4f16e9dd0aa4e9639694751d537a0d648c3bb63ab711031f7f6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:09:57,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:09:57,288 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-24 23:09:57,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:09:57,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:09:57,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:09:57,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:09:57,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:09:57,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:09:57,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:09:57,352 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:09:57,353 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:09:57,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:09:57,355 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:09:57,356 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:09:57,356 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:09:57,357 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:09:57,357 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:09:57,358 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:09:57,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:09:57,359 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:09:57,360 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:09:57,361 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:09:57,361 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:09:57,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:09:57,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:09:57,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:09:57,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:09:57,364 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:09:57,364 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:09:57,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:09:57,366 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:09:57,367 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_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecc8bc71d47ab4f16e9dd0aa4e9639694751d537a0d648c3bb63ab711031f7f6 [2023-11-24 23:09:57,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:09:57,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:09:57,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:09:57,771 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:09:57,772 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:09:57,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_34_bad.i [2023-11-24 23:10:00,800 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:10:01,282 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:10:01,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_34_bad.i [2023-11-24 23:10:01,328 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/data/647569a15/d91e70703bb64444909ab856a0793210/FLAG0b0dcd1d8 [2023-11-24 23:10:01,346 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/data/647569a15/d91e70703bb64444909ab856a0793210 [2023-11-24 23:10:01,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:10:01,350 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:10:01,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:10:01,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:10:01,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:10:01,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:10:01" (1/1) ... [2023-11-24 23:10:01,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503b6f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:01, skipping insertion in model container [2023-11-24 23:10:01,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:10:01" (1/1) ... [2023-11-24 23:10:01,423 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:10:02,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:10:02,444 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:10:02,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:10:02,753 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:10:02,753 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:10:02,754 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:10:02,754 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:10:02,754 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:10:02,762 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:10:02,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02 WrapperNode [2023-11-24 23:10:02,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:10:02,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:10:02,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:10:02,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:10:02,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,817 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,857 INFO L138 Inliner]: procedures = 499, calls = 67, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-11-24 23:10:02,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:10:02,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:10:02,859 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:10:02,859 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:10:02,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,885 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:10:02,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:10:02,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:10:02,939 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:10:02,940 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:02" (1/1) ... [2023-11-24 23:10:02,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:10:02,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:10:02,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:10:02,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:10:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-24 23:10:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 23:10:03,011 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 23:10:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:10:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:10:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:10:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:10:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:10:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:10:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:10:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 23:10:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:10:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:10:03,236 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:10:03,238 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:10:03,375 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:10:03,440 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:10:03,446 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:10:03,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:10:03 BoogieIcfgContainer [2023-11-24 23:10:03,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:10:03,449 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:10:03,449 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:10:03,460 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:10:03,460 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:10:03" (1/1) ... [2023-11-24 23:10:03,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:10:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2023-11-24 23:10:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-24 23:10:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:10:03,547 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:03,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:10:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:03,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:10:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:03,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:10:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:03,900 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-24 23:10:03,934 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet104 [2023-11-24 23:10:03,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:10:03 ImpRootNode [2023-11-24 23:10:03,942 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:10:03,943 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:10:03,943 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:10:03,943 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:10:03,944 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:10:03" (3/4) ... [2023-11-24 23:10:03,946 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:10:03,947 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:10:03,949 INFO L158 Benchmark]: Toolchain (without parser) took 2598.31ms. Allocated memory is still 169.9MB. Free memory was 138.9MB in the beginning and 105.0MB in the end (delta: 34.0MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2023-11-24 23:10:03,949 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 102.5MB in the beginning and 102.3MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:10:03,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1411.62ms. Allocated memory is still 169.9MB. Free memory was 138.1MB in the beginning and 75.2MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2023-11-24 23:10:03,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.32ms. Allocated memory is still 169.9MB. Free memory was 75.2MB in the beginning and 72.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:10:03,951 INFO L158 Benchmark]: Boogie Preprocessor took 67.06ms. Allocated memory is still 169.9MB. Free memory was 72.2MB in the beginning and 138.4MB in the end (delta: -66.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:10:03,952 INFO L158 Benchmark]: RCFGBuilder took 510.23ms. Allocated memory is still 169.9MB. Free memory was 138.4MB in the beginning and 126.0MB in the end (delta: 12.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:10:03,953 INFO L158 Benchmark]: CodeCheck took 493.02ms. Allocated memory is still 169.9MB. Free memory was 126.0MB in the beginning and 106.0MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:10:03,954 INFO L158 Benchmark]: Witness Printer took 5.01ms. Allocated memory is still 169.9MB. Free memory was 106.0MB in the beginning and 105.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:10:03,958 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562, overapproximation of large string literal at line 1582. 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); [L1582] 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) [L1582] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=47, argc=47, argv={48:49}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1583] CALL CWE191_Integer_Underflow__int_fgets_predec_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_predec_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={32288:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 102.5MB in the beginning and 102.3MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1411.62ms. Allocated memory is still 169.9MB. Free memory was 138.1MB in the beginning and 75.2MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.32ms. Allocated memory is still 169.9MB. Free memory was 75.2MB in the beginning and 72.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.06ms. Allocated memory is still 169.9MB. Free memory was 72.2MB in the beginning and 138.4MB in the end (delta: -66.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 510.23ms. Allocated memory is still 169.9MB. Free memory was 138.4MB in the beginning and 126.0MB in the end (delta: 12.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 493.02ms. Allocated memory is still 169.9MB. Free memory was 126.0MB in the beginning and 106.0MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 5.01ms. Allocated memory is still 169.9MB. Free memory was 106.0MB in the beginning and 105.0MB in the end (delta: 1.0MB). 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: unknown boogie variable #t~nondet104 - 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 [2023-11-24 23:10:03,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi --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 ecc8bc71d47ab4f16e9dd0aa4e9639694751d537a0d648c3bb63ab711031f7f6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:10:06,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:10:06,855 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-24 23:10:06,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:10:06,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:10:06,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:10:06,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:10:06,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:10:06,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:10:06,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:10:06,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:10:06,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:10:06,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:10:06,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:10:06,923 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:10:06,923 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:10:06,924 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:10:06,924 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:10:06,925 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:10:06,926 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:10:06,926 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:10:06,927 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:10:06,928 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:10:06,928 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:10:06,929 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:10:06,929 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-24 23:10:06,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:10:06,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:10:06,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:10:06,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:10:06,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:10:06,932 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:10:06,933 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:10:06,933 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:10:06,933 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-24 23:10:06,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:10:06,934 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_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecc8bc71d47ab4f16e9dd0aa4e9639694751d537a0d648c3bb63ab711031f7f6 [2023-11-24 23:10:07,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:10:07,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:10:07,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:10:07,379 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:10:07,380 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:10:07,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_34_bad.i [2023-11-24 23:10:10,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:10:10,992 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:10:10,992 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_34_bad.i [2023-11-24 23:10:11,024 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/data/0d9d4e30e/dfbe8233df0d4c6986235c23a9a58741/FLAG21d97b0d5 [2023-11-24 23:10:11,039 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/data/0d9d4e30e/dfbe8233df0d4c6986235c23a9a58741 [2023-11-24 23:10:11,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:10:11,042 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:10:11,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:10:11,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:10:11,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:10:11,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:10:11" (1/1) ... [2023-11-24 23:10:11,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbd4c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:11, skipping insertion in model container [2023-11-24 23:10:11,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:10:11" (1/1) ... [2023-11-24 23:10:11,114 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:10:12,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:10:12,416 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:10:12,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:10:12,727 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:10:12,727 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:10:12,727 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:10:12,728 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:10:12,728 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:10:12,736 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:10:12,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12 WrapperNode [2023-11-24 23:10:12,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:10:12,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:10:12,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:10:12,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:10:12,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,811 INFO L138 Inliner]: procedures = 504, calls = 67, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2023-11-24 23:10:12,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:10:12,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:10:12,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:10:12,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:10:12,823 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:10:12,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:10:12,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:10:12,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:10:12,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:10:12" (1/1) ... [2023-11-24 23:10:12,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:10:12,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:10:12,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:10:12,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:10:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-24 23:10:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 23:10:13,021 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 23:10:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:10:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:10:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:10:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:10:13,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:10:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:10:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:10:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:10:13,024 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 23:10:13,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-24 23:10:13,229 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:10:13,232 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:10:13,466 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:10:13,549 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:10:13,552 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:10:13,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:10:13 BoogieIcfgContainer [2023-11-24 23:10:13,553 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:10:13,554 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:10:13,554 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:10:13,563 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:10:13,564 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:10:13" (1/1) ... [2023-11-24 23:10:13,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:10:13,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:10:13,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2023-11-24 23:10:13,660 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-24 23:10:13,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:10:13,664 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:10:13,665 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:10:13,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:10:13,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:10:13,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-24 23:10:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:13,969 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:10:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:14,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:10:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:10:14,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:10:14,490 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-24 23:10:14,526 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-11-24 23:10:14,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:10:14 ImpRootNode [2023-11-24 23:10:14,534 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:10:14,537 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:10:14,537 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:10:14,537 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:10:14,538 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:10:13" (3/4) ... [2023-11-24 23:10:14,540 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:10:14,543 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:10:14,544 INFO L158 Benchmark]: Toolchain (without parser) took 3501.19ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 49.2MB in the beginning and 66.6MB in the end (delta: -17.4MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2023-11-24 23:10:14,545 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 77.6MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:10:14,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1693.52ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 49.0MB in the beginning and 47.3MB in the end (delta: 1.8MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2023-11-24 23:10:14,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.08ms. Allocated memory is still 100.7MB. Free memory was 47.3MB in the beginning and 44.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:10:14,548 INFO L158 Benchmark]: Boogie Preprocessor took 64.15ms. Allocated memory is still 100.7MB. Free memory was 44.3MB in the beginning and 42.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:10:14,549 INFO L158 Benchmark]: RCFGBuilder took 675.95ms. Allocated memory is still 100.7MB. Free memory was 42.2MB in the beginning and 55.3MB in the end (delta: -13.1MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2023-11-24 23:10:14,550 INFO L158 Benchmark]: CodeCheck took 979.88ms. Allocated memory is still 100.7MB. Free memory was 55.3MB in the beginning and 67.2MB in the end (delta: -11.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:10:14,550 INFO L158 Benchmark]: Witness Printer took 6.53ms. Allocated memory is still 100.7MB. Free memory was 67.2MB in the beginning and 66.6MB in the end (delta: 586.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:10:14,565 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562, overapproximation of large string literal at line 1582. 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); [L1582] 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) [L1582] 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] [L1583] CALL CWE191_Integer_Underflow__int_fgets_predec_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_predec_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 77.6MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1693.52ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 49.0MB in the beginning and 47.3MB in the end (delta: 1.8MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.08ms. Allocated memory is still 100.7MB. Free memory was 47.3MB in the beginning and 44.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.15ms. Allocated memory is still 100.7MB. Free memory was 44.3MB in the beginning and 42.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 675.95ms. Allocated memory is still 100.7MB. Free memory was 42.2MB in the beginning and 55.3MB in the end (delta: -13.1MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * CodeCheck took 979.88ms. Allocated memory is still 100.7MB. Free memory was 55.3MB in the beginning and 67.2MB in the end (delta: -11.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.53ms. Allocated memory is still 100.7MB. Free memory was 67.2MB in the beginning and 66.6MB in the end (delta: 586.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet102 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 23:10:14,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fa48ca8-414e-449b-9d7a-f72613634da1/bin/ukojak-verify-afCqCEvfdi/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