./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/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_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/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_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/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 cc97983eee1bae1752601b2134a45f91e3415daed6bc26982b68c30eb488fa92 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:46:07,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:46:07,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 02:46:07,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 02:46:07,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 02:46:07,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:46:07,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:46:07,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:46:07,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:46:07,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:46:07,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:46:07,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:46:07,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 02:46:07,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:46:07,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:46:07,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:46:07,608 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:46:07,608 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 02:46:07,609 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 02:46:07,609 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:46:07,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:46:07,610 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:46:07,611 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:46:07,611 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:46:07,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:46:07,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:46:07,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:46:07,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:46:07,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:46:07,615 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 02:46:07,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 02:46:07,617 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:46:07,617 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_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc97983eee1bae1752601b2134a45f91e3415daed6bc26982b68c30eb488fa92 [2023-11-19 02:46:07,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:46:07,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:46:07,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:46:07,989 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:46:07,990 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:46:07,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i [2023-11-19 02:46:11,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:46:11,594 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:46:11,595 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i [2023-11-19 02:46:11,624 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/data/c22fc6754/989e48d620c14f14a0b6f3e1e7fcb578/FLAG94c09c815 [2023-11-19 02:46:11,640 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/data/c22fc6754/989e48d620c14f14a0b6f3e1e7fcb578 [2023-11-19 02:46:11,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:46:11,644 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:46:11,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:46:11,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:46:11,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:46:11,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:11" (1/1) ... [2023-11-19 02:46:11,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9fa3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:11, skipping insertion in model container [2023-11-19 02:46:11,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:11" (1/1) ... [2023-11-19 02:46:11,723 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:46:12,184 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:46:12,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:46:12,882 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:46:12,904 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:46:12,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:46:13,221 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:13,221 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:13,221 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:13,222 WARN L675 CHandler]: The function funcPtr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:13,222 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:13,222 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:13,223 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:13,232 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:46:13,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13 WrapperNode [2023-11-19 02:46:13,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:46:13,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:46:13,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:46:13,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:46:13,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,341 INFO L138 Inliner]: procedures = 502, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 61 [2023-11-19 02:46:13,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:46:13,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:46:13,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:46:13,343 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:46:13,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:46:13,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:46:13,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:46:13,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:46:13,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:46:13,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:46:13,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:46:13,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:46:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 02:46:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 02:46:13,493 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 02:46:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 02:46:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 02:46:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:46:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:46:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:46:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 02:46:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 02:46:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 02:46:13,667 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:46:13,670 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:46:13,817 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:46:13,863 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:46:13,863 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 02:46:13,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:13 BoogieIcfgContainer [2023-11-19 02:46:13,870 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:46:13,873 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:46:13,874 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:46:13,883 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:46:13,883 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:13" (1/1) ... [2023-11-19 02:46:13,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:46:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:46:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 02:46:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 02:46:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 02:46:13,952 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:46:13,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:46:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:46:14,105 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:46:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:46:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:46:14,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:46:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:46:14,290 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 02:46:14,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 02:46:14 ImpRootNode [2023-11-19 02:46:14,324 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 02:46:14,325 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 02:46:14,325 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 02:46:14,325 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 02:46:14,326 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:13" (3/4) ... [2023-11-19 02:46:14,328 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 02:46:14,329 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 02:46:14,330 INFO L158 Benchmark]: Toolchain (without parser) took 2686.02ms. Allocated memory was 163.6MB in the beginning and 207.6MB in the end (delta: 44.0MB). Free memory was 113.5MB in the beginning and 117.7MB in the end (delta: -4.2MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2023-11-19 02:46:14,331 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 163.6MB. Free memory was 108.1MB in the beginning and 108.1MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:46:14,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1587.98ms. Allocated memory was 163.6MB in the beginning and 207.6MB in the end (delta: 44.0MB). Free memory was 113.3MB in the beginning and 156.5MB in the end (delta: -43.1MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. [2023-11-19 02:46:14,339 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.48ms. Allocated memory is still 207.6MB. Free memory was 156.5MB in the beginning and 154.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:46:14,341 INFO L158 Benchmark]: Boogie Preprocessor took 67.48ms. Allocated memory is still 207.6MB. Free memory was 153.3MB in the beginning and 152.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:46:14,343 INFO L158 Benchmark]: RCFGBuilder took 459.17ms. Allocated memory is still 207.6MB. Free memory was 152.2MB in the beginning and 136.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 02:46:14,344 INFO L158 Benchmark]: CodeCheck took 450.80ms. Allocated memory is still 207.6MB. Free memory was 136.6MB in the beginning and 118.4MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 02:46:14,345 INFO L158 Benchmark]: Witness Printer took 4.58ms. Allocated memory is still 207.6MB. Free memory was 118.4MB in the beginning and 117.7MB in the end (delta: 719.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:46:14,357 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1551]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1565. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={13:28}, argv={13:28}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_predec_44_bad() [L1558] int data; [L1559] void (*funcPtr) (int) = badSink; [L1560] data = 0 [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1563] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1565] EXPR data = atoi(inputBuffer) [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561-L1571] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1572] CALL funcPtr(data) [L1551] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 163.6MB. Free memory was 108.1MB in the beginning and 108.1MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1587.98ms. Allocated memory was 163.6MB in the beginning and 207.6MB in the end (delta: 44.0MB). Free memory was 113.3MB in the beginning and 156.5MB in the end (delta: -43.1MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.48ms. Allocated memory is still 207.6MB. Free memory was 156.5MB in the beginning and 154.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.48ms. Allocated memory is still 207.6MB. Free memory was 153.3MB in the beginning and 152.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 459.17ms. Allocated memory is still 207.6MB. Free memory was 152.2MB in the beginning and 136.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 450.80ms. Allocated memory is still 207.6MB. Free memory was 136.6MB in the beginning and 118.4MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.58ms. Allocated memory is still 207.6MB. Free memory was 118.4MB in the beginning and 117.7MB in the end (delta: 719.3kB). 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 02:46:14,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/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_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/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_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/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 cc97983eee1bae1752601b2134a45f91e3415daed6bc26982b68c30eb488fa92 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:46:17,140 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:46:17,251 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 02:46:17,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:46:17,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:46:17,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:46:17,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:46:17,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:46:17,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:46:17,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:46:17,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:46:17,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:46:17,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:46:17,318 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:46:17,318 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 02:46:17,319 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 02:46:17,319 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 02:46:17,320 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 02:46:17,320 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 02:46:17,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:46:17,321 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:46:17,322 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:46:17,322 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:46:17,323 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:46:17,323 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 02:46:17,323 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 02:46:17,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:46:17,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:46:17,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:46:17,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:46:17,326 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:46:17,327 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 02:46:17,327 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 02:46:17,327 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:46:17,328 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 02:46:17,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 02:46:17,328 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_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc97983eee1bae1752601b2134a45f91e3415daed6bc26982b68c30eb488fa92 [2023-11-19 02:46:17,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:46:17,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:46:17,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:46:17,794 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:46:17,795 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:46:17,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i [2023-11-19 02:46:20,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:46:21,462 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:46:21,463 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_44_bad.i [2023-11-19 02:46:21,502 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/data/d2067c48c/54dcf4acb4c64d07aae9ffaec6ab9e04/FLAGddc64f9aa [2023-11-19 02:46:21,526 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/data/d2067c48c/54dcf4acb4c64d07aae9ffaec6ab9e04 [2023-11-19 02:46:21,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:46:21,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:46:21,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:46:21,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:46:21,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:46:21,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:21" (1/1) ... [2023-11-19 02:46:21,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26cc50fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:21, skipping insertion in model container [2023-11-19 02:46:21,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:21" (1/1) ... [2023-11-19 02:46:21,655 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:46:22,087 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:46:22,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:46:22,688 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:46:22,714 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:46:22,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:46:22,947 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:22,947 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:22,947 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:22,948 WARN L675 CHandler]: The function funcPtr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:22,948 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:22,948 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:22,948 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:46:22,957 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:46:22,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22 WrapperNode [2023-11-19 02:46:22,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:46:22,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:46:22,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:46:22,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:46:22,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,050 INFO L138 Inliner]: procedures = 507, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 60 [2023-11-19 02:46:23,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:46:23,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:46:23,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:46:23,053 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:46:23,063 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,089 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:46:23,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:46:23,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:46:23,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:46:23,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:22" (1/1) ... [2023-11-19 02:46:23,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:46:23,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:46:23,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:46:23,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:46:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 02:46:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 02:46:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 02:46:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 02:46:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 02:46:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:46:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:46:23,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:46:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 02:46:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 02:46:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 02:46:23,385 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:46:23,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:46:23,642 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:46:23,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:46:23,696 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 02:46:23,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:23 BoogieIcfgContainer [2023-11-19 02:46:23,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:46:23,703 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:46:23,703 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:46:23,716 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:46:23,716 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:23" (1/1) ... [2023-11-19 02:46:23,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:46:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:46:23,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 02:46:23,826 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 02:46:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 02:46:23,832 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:46:23,832 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 02:46:23,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 02:46:23,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 02:46:23,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 02:46:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:46:24,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:46:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:46:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:46:24,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:46:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:46:24,535 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 02:46:24,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-19 02:46:24,543 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 02:46:24,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 02:46:24 ImpRootNode [2023-11-19 02:46:24,592 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 02:46:24,593 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 02:46:24,594 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 02:46:24,594 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 02:46:24,594 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:23" (3/4) ... [2023-11-19 02:46:24,597 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 02:46:24,598 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 02:46:24,599 INFO L158 Benchmark]: Toolchain (without parser) took 3064.62ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 50.4MB in the beginning and 48.8MB in the end (delta: 1.6MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2023-11-19 02:46:24,599 INFO L158 Benchmark]: CDTParser took 0.64ms. Allocated memory is still 77.6MB. Free memory is still 53.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:46:24,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1418.33ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 50.2MB in the beginning and 60.6MB in the end (delta: -10.4MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2023-11-19 02:46:24,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.11ms. Allocated memory is still 100.7MB. Free memory was 60.6MB in the beginning and 57.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 02:46:24,602 INFO L158 Benchmark]: Boogie Preprocessor took 47.15ms. Allocated memory is still 100.7MB. Free memory was 57.4MB in the beginning and 55.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:46:24,603 INFO L158 Benchmark]: RCFGBuilder took 601.79ms. Allocated memory is still 100.7MB. Free memory was 55.3MB in the beginning and 67.1MB in the end (delta: -11.8MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2023-11-19 02:46:24,605 INFO L158 Benchmark]: CodeCheck took 889.61ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 49.4MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 02:46:24,606 INFO L158 Benchmark]: Witness Printer took 4.81ms. Allocated memory is still 100.7MB. Free memory was 49.4MB in the beginning and 48.8MB in the end (delta: 559.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:46:24,610 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: 0.8s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1551]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1565. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_predec_44_bad() [L1558] int data; [L1559] void (*funcPtr) (int) = badSink; [L1560] data = 0 [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1563] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1565] EXPR data = atoi(inputBuffer) [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561-L1571] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1572] CALL funcPtr(data) [L1551] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64ms. Allocated memory is still 77.6MB. Free memory is still 53.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1418.33ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 50.2MB in the beginning and 60.6MB in the end (delta: -10.4MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.11ms. Allocated memory is still 100.7MB. Free memory was 60.6MB in the beginning and 57.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.15ms. Allocated memory is still 100.7MB. Free memory was 57.4MB in the beginning and 55.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 601.79ms. Allocated memory is still 100.7MB. Free memory was 55.3MB in the beginning and 67.1MB in the end (delta: -11.8MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * CodeCheck took 889.61ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 49.4MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.81ms. Allocated memory is still 100.7MB. Free memory was 49.4MB in the beginning and 48.8MB in the end (delta: 559.9kB). 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 02:46:24,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa78f0e0-b2c9-463f-b1cd-787b48bd3ca9/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