./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:26:01,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:26:01,771 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 03:26:01,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:26:01,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:26:01,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:26:01,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:26:01,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:26:01,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:26:01,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:26:01,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:26:01,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:26:01,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:26:01,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:26:01,836 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:26:01,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:26:01,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:26:01,838 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:26:01,838 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:26:01,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:26:01,839 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:26:01,839 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:26:01,840 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:26:01,840 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:26:01,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:26:01,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:26:01,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:26:01,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:26:01,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:26:01,843 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:26:01,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:26:01,845 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:26:01,845 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_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f [2023-11-19 03:26:02,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:26:02,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:26:02,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:26:02,197 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:26:02,197 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:26:02,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i [2023-11-19 03:26:05,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:26:05,847 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:26:05,848 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i [2023-11-19 03:26:05,881 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/data/66300e77f/8596219a840f498a9e2ea4df4d817d42/FLAG120bc0a9e [2023-11-19 03:26:05,903 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/data/66300e77f/8596219a840f498a9e2ea4df4d817d42 [2023-11-19 03:26:05,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:26:05,911 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:26:05,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:26:05,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:26:05,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:26:05,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:26:05" (1/1) ... [2023-11-19 03:26:05,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1472a142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:05, skipping insertion in model container [2023-11-19 03:26:05,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:26:05" (1/1) ... [2023-11-19 03:26:06,005 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:26:06,376 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:26:06,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:26:06,930 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:26:06,950 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:26:07,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:26:07,209 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:07,210 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:07,210 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:07,210 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:07,210 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:07,211 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:07,219 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:26:07,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07 WrapperNode [2023-11-19 03:26:07,219 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:26:07,221 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:26:07,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:26:07,222 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:26:07,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,279 INFO L138 Inliner]: procedures = 502, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59 [2023-11-19 03:26:07,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:26:07,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:26:07,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:26:07,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:26:07,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,309 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:26:07,310 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:26:07,310 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:26:07,310 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:26:07,311 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:26:07,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:26:07,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:26:07,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:26:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:26:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:26:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:26:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:26:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 03:26:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:26:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:26:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:26:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:26:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:26:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:26:07,527 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:26:07,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:26:07,658 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:26:07,700 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:26:07,700 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:26:07,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:26:07 BoogieIcfgContainer [2023-11-19 03:26:07,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:26:07,706 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:26:07,706 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:26:07,716 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:26:07,717 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:26:07" (1/1) ... [2023-11-19 03:26:07,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:26:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:26:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 03:26:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 03:26:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:26:07,780 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:26:07,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:26:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:26:07,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:26:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:26:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:26:08,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:26:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:26:08,207 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 03:26:08,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:26:08 ImpRootNode [2023-11-19 03:26:08,254 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:26:08,259 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:26:08,259 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:26:08,259 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:26:08,260 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:26:07" (3/4) ... [2023-11-19 03:26:08,265 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:26:08,266 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:26:08,267 INFO L158 Benchmark]: Toolchain (without parser) took 2355.15ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 114.1MB in the end (delta: -7.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:26:08,268 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 155.2MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:26:08,269 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1302.69ms. Allocated memory is still 155.2MB. Free memory was 106.3MB in the beginning and 91.9MB in the end (delta: 14.3MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2023-11-19 03:26:08,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.51ms. Allocated memory is still 155.2MB. Free memory was 91.9MB in the beginning and 89.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:26:08,271 INFO L158 Benchmark]: Boogie Preprocessor took 29.75ms. Allocated memory is still 155.2MB. Free memory was 89.2MB in the beginning and 87.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:26:08,272 INFO L158 Benchmark]: RCFGBuilder took 395.38ms. Allocated memory is still 155.2MB. Free memory was 87.7MB in the beginning and 72.4MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 03:26:08,273 INFO L158 Benchmark]: CodeCheck took 548.31ms. Allocated memory is still 155.2MB. Free memory was 72.4MB in the beginning and 115.1MB in the end (delta: -42.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:26:08,274 INFO L158 Benchmark]: Witness Printer took 7.24ms. Allocated memory is still 155.2MB. Free memory was 115.1MB in the beginning and 114.1MB in the end (delta: 966.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:26:08,285 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: 0.5s, 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=28, argc=28, argv={12:27}, argv={12:27}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_52_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_52c_badSink(data) [L1582] --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 0.25ms. Allocated memory is still 155.2MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1302.69ms. Allocated memory is still 155.2MB. Free memory was 106.3MB in the beginning and 91.9MB in the end (delta: 14.3MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.51ms. Allocated memory is still 155.2MB. Free memory was 91.9MB in the beginning and 89.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.75ms. Allocated memory is still 155.2MB. Free memory was 89.2MB in the beginning and 87.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 395.38ms. Allocated memory is still 155.2MB. Free memory was 87.7MB in the beginning and 72.4MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 548.31ms. Allocated memory is still 155.2MB. Free memory was 72.4MB in the beginning and 115.1MB in the end (delta: -42.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.24ms. Allocated memory is still 155.2MB. Free memory was 115.1MB in the beginning and 114.1MB in the end (delta: 966.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:26:08,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:26:11,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:26:11,155 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 03:26:11,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:26:11,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:26:11,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:26:11,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:26:11,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:26:11,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:26:11,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:26:11,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:26:11,212 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:26:11,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:26:11,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:26:11,214 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 03:26:11,215 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 03:26:11,215 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:26:11,216 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 03:26:11,216 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:26:11,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:26:11,217 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:26:11,218 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:26:11,219 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:26:11,219 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:26:11,220 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:26:11,220 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 03:26:11,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:26:11,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:26:11,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:26:11,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:26:11,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:26:11,223 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 03:26:11,224 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:26:11,224 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:26:11,224 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 03:26:11,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 03:26:11,225 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_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f [2023-11-19 03:26:11,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:26:11,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:26:11,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:26:11,675 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:26:11,676 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:26:11,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i [2023-11-19 03:26:14,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:26:15,414 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:26:15,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i [2023-11-19 03:26:15,453 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/data/d0bf5f26c/801bb00043e04ad28ffb878a502f8fdf/FLAG0adda23ca [2023-11-19 03:26:15,476 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/data/d0bf5f26c/801bb00043e04ad28ffb878a502f8fdf [2023-11-19 03:26:15,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:26:15,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:26:15,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:26:15,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:26:15,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:26:15,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:26:15" (1/1) ... [2023-11-19 03:26:15,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9da3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:15, skipping insertion in model container [2023-11-19 03:26:15,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:26:15" (1/1) ... [2023-11-19 03:26:15,569 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:26:15,951 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:26:16,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:26:16,519 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:26:16,540 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:26:16,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:26:16,838 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:16,839 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:16,839 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:16,839 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:16,840 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:16,840 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:26:16,848 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:26:16,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16 WrapperNode [2023-11-19 03:26:16,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:26:16,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:26:16,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:26:16,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:26:16,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:16,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:16,953 INFO L138 Inliner]: procedures = 507, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 58 [2023-11-19 03:26:16,953 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:26:16,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:26:16,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:26:16,954 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:26:16,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:16,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:16,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:16,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:16,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:16,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:17,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:17,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:17,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:26:17,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:26:17,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:26:17,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:26:17,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:26:16" (1/1) ... [2023-11-19 03:26:17,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:26:17,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:26:17,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:26:17,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:26:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:26:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:26:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:26:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:26:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 03:26:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:26:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:26:17,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:26:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:26:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:26:17,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 03:26:17,265 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:26:17,267 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:26:17,455 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:26:17,502 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:26:17,502 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:26:17,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:26:17 BoogieIcfgContainer [2023-11-19 03:26:17,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:26:17,521 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:26:17,521 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:26:17,531 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:26:17,532 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:26:17" (1/1) ... [2023-11-19 03:26:17,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:26:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:26:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 03:26:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 03:26:17,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:26:17,621 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:26:17,621 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:26:17,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:26:17,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:26:17,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 03:26:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:26:17,819 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:26:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:26:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:26:18,036 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:26:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:26:18,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-19 03:26:18,104 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 03:26:18,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:26:18 ImpRootNode [2023-11-19 03:26:18,147 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:26:18,149 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:26:18,150 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:26:18,150 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:26:18,150 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:26:17" (3/4) ... [2023-11-19 03:26:18,152 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:26:18,153 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:26:18,155 INFO L158 Benchmark]: Toolchain (without parser) took 2670.97ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 59.9MB in the beginning and 61.5MB in the end (delta: -1.6MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2023-11-19 03:26:18,155 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 88.1MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:26:18,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1362.50ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 59.7MB in the beginning and 68.6MB in the end (delta: -8.9MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2023-11-19 03:26:18,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.21ms. Allocated memory is still 115.3MB. Free memory was 68.6MB in the beginning and 65.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:26:18,158 INFO L158 Benchmark]: Boogie Preprocessor took 56.25ms. Allocated memory is still 115.3MB. Free memory was 65.5MB in the beginning and 63.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:26:18,159 INFO L158 Benchmark]: RCFGBuilder took 495.81ms. Allocated memory is still 115.3MB. Free memory was 63.4MB in the beginning and 79.8MB in the end (delta: -16.4MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2023-11-19 03:26:18,160 INFO L158 Benchmark]: CodeCheck took 626.64ms. Allocated memory is still 115.3MB. Free memory was 79.8MB in the beginning and 61.5MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 03:26:18,160 INFO L158 Benchmark]: Witness Printer took 4.27ms. Allocated memory is still 115.3MB. Free memory is still 61.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:26:18,172 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: 0.5s, 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_52_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_52c_badSink(data) [L1582] --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 0.61ms. Allocated memory is still 88.1MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1362.50ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 59.7MB in the beginning and 68.6MB in the end (delta: -8.9MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.21ms. Allocated memory is still 115.3MB. Free memory was 68.6MB in the beginning and 65.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.25ms. Allocated memory is still 115.3MB. Free memory was 65.5MB in the beginning and 63.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 495.81ms. Allocated memory is still 115.3MB. Free memory was 63.4MB in the beginning and 79.8MB in the end (delta: -16.4MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * CodeCheck took 626.64ms. Allocated memory is still 115.3MB. Free memory was 79.8MB in the beginning and 61.5MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.27ms. Allocated memory is still 115.3MB. Free memory is still 61.5MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:26:18,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_113d8063-a7ce-445b-b7b2-322da7d7d45b/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample