./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_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_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/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_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/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_1f31b5e4-5519-4c00-910e-64ebef661e51/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 02f0093e8608d74f9c40a937fb4441e30f3654c13a2096bc11c8fc7cd6eaa3c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:44:13,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:44:13,920 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 03:44:13,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:44:13,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:44:13,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:44:13,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:44:13,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:44:13,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:44:13,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:44:13,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:44:13,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:44:13,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:44:13,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:44:13,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:44:13,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:44:13,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:44:13,971 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:44:13,971 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:44:13,972 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:44:13,972 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:44:13,973 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:44:13,974 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:44:13,974 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:44:13,975 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:44:13,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:44:13,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:44:13,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:44:13,976 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:44:13,977 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:44:13,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:44:13,977 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:44:13,978 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_1f31b5e4-5519-4c00-910e-64ebef661e51/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02f0093e8608d74f9c40a937fb4441e30f3654c13a2096bc11c8fc7cd6eaa3c8 [2023-11-19 03:44:14,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:44:14,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:44:14,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:44:14,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:44:14,304 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:44:14,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i [2023-11-19 03:44:17,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:44:17,828 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:44:17,829 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i [2023-11-19 03:44:17,868 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/data/5c79e9b4f/9851adf96dbe4e20a09fa50992271fa1/FLAGa046478d9 [2023-11-19 03:44:17,888 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/data/5c79e9b4f/9851adf96dbe4e20a09fa50992271fa1 [2023-11-19 03:44:17,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:44:17,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:44:17,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:44:17,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:44:17,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:44:17,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:17" (1/1) ... [2023-11-19 03:44:17,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7ea787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:17, skipping insertion in model container [2023-11-19 03:44:17,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:17" (1/1) ... [2023-11-19 03:44:17,987 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:44:18,451 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:44:19,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:44:19,108 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:44:19,125 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:44:19,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:44:19,326 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:19,326 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:19,327 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:19,327 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:19,327 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:19,327 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:19,335 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:44:19,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19 WrapperNode [2023-11-19 03:44:19,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:44:19,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:44:19,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:44:19,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:44:19,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,400 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-11-19 03:44:19,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:44:19,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:44:19,403 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:44:19,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:44:19,413 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:44:19,469 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:44:19,469 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:44:19,469 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:44:19,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:44:19,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:44:19,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:44:19,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:44:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:44:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:44:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:44:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:44:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 03:44:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:44:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:44:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:44:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:44:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:44:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:44:19,753 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:44:19,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:44:19,927 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:44:19,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:44:19,959 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 03:44:19,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:19 BoogieIcfgContainer [2023-11-19 03:44:19,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:44:19,965 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:44:19,966 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:44:19,976 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:44:19,976 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:19" (1/1) ... [2023-11-19 03:44:19,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:44:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:44:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-19 03:44:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-19 03:44:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:44:20,047 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:44:20,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:44:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:44:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:44:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:44:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2023-11-19 03:44:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-19 03:44:20,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:44:20,311 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:44:20,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:44:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:20,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:44:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:20,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:44:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:20,511 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-19 03:44:20,538 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post100 could not be translated [2023-11-19 03:44:20,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:44:20 ImpRootNode [2023-11-19 03:44:20,548 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:44:20,549 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:44:20,549 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:44:20,551 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:44:20,552 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:19" (3/4) ... [2023-11-19 03:44:20,556 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:44:20,557 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:44:20,558 INFO L158 Benchmark]: Toolchain (without parser) took 2662.29ms. Allocated memory is still 186.6MB. Free memory was 139.6MB in the beginning and 118.3MB in the end (delta: 21.3MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2023-11-19 03:44:20,560 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 127.9MB. Free memory was 93.6MB in the beginning and 93.6MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:44:20,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1438.28ms. Allocated memory is still 186.6MB. Free memory was 139.6MB in the beginning and 76.7MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2023-11-19 03:44:20,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.90ms. Allocated memory is still 186.6MB. Free memory was 76.7MB in the beginning and 73.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 03:44:20,563 INFO L158 Benchmark]: Boogie Preprocessor took 64.87ms. Allocated memory is still 186.6MB. Free memory was 73.3MB in the beginning and 72.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:44:20,564 INFO L158 Benchmark]: RCFGBuilder took 495.64ms. Allocated memory is still 186.6MB. Free memory was 72.1MB in the beginning and 142.4MB in the end (delta: -70.3MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2023-11-19 03:44:20,570 INFO L158 Benchmark]: CodeCheck took 582.59ms. Allocated memory is still 186.6MB. Free memory was 141.4MB in the beginning and 118.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 03:44:20,570 INFO L158 Benchmark]: Witness Printer took 8.78ms. Allocated memory is still 186.6MB. Free memory is still 118.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:44:20,578 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 53 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, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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); [L1578] 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) [L1578] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=13, argc=13, argv={12:30}, argv={12:30}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_postdec_03_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, 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 0.29ms. Allocated memory is still 127.9MB. Free memory was 93.6MB in the beginning and 93.6MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1438.28ms. Allocated memory is still 186.6MB. Free memory was 139.6MB in the beginning and 76.7MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.90ms. Allocated memory is still 186.6MB. Free memory was 76.7MB in the beginning and 73.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.87ms. Allocated memory is still 186.6MB. Free memory was 73.3MB in the beginning and 72.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 495.64ms. Allocated memory is still 186.6MB. Free memory was 72.1MB in the beginning and 142.4MB in the end (delta: -70.3MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * CodeCheck took 582.59ms. Allocated memory is still 186.6MB. Free memory was 141.4MB in the beginning and 118.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 8.78ms. Allocated memory is still 186.6MB. Free memory is still 118.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post100 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:44:20,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/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_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/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_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/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_1f31b5e4-5519-4c00-910e-64ebef661e51/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 02f0093e8608d74f9c40a937fb4441e30f3654c13a2096bc11c8fc7cd6eaa3c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:44:23,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:44:23,278 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 03:44:23,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:44:23,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:44:23,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:44:23,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:44:23,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:44:23,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:44:23,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:44:23,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:44:23,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:44:23,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:44:23,325 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:44:23,326 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 03:44:23,327 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 03:44:23,327 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:44:23,328 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 03:44:23,329 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:44:23,329 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:44:23,330 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:44:23,331 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:44:23,331 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:44:23,332 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:44:23,332 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:44:23,333 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 03:44:23,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:44:23,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:44:23,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:44:23,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:44:23,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:44:23,337 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 03:44:23,337 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:44:23,338 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:44:23,339 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 03:44:23,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 03:44:23,340 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_1f31b5e4-5519-4c00-910e-64ebef661e51/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02f0093e8608d74f9c40a937fb4441e30f3654c13a2096bc11c8fc7cd6eaa3c8 [2023-11-19 03:44:23,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:44:23,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:44:23,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:44:23,762 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:44:23,763 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:44:23,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i [2023-11-19 03:44:26,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:44:27,328 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:44:27,329 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_03_bad.i [2023-11-19 03:44:27,369 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/data/b167af707/14e3fe14d4af4be1838fc0b37367778f/FLAG0a5be4e63 [2023-11-19 03:44:27,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/data/b167af707/14e3fe14d4af4be1838fc0b37367778f [2023-11-19 03:44:27,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:44:27,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:44:27,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:44:27,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:44:27,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:44:27,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:27" (1/1) ... [2023-11-19 03:44:27,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a5430c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:27, skipping insertion in model container [2023-11-19 03:44:27,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:44:27" (1/1) ... [2023-11-19 03:44:27,499 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:44:27,950 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:44:28,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:44:28,632 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:44:28,662 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:44:28,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:44:28,915 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:28,915 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:28,916 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:28,916 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:28,916 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:28,916 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:44:28,924 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:44:28,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28 WrapperNode [2023-11-19 03:44:28,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:44:28,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:44:28,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:44:28,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:44:28,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:28,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:29,017 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-19 03:44:29,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:44:29,019 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:44:29,019 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:44:29,019 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:44:29,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:29,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:29,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:29,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:29,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:29,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:29,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:29,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:29,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:44:29,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:44:29,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:44:29,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:44:29,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:44:28" (1/1) ... [2023-11-19 03:44:29,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:44:29,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:44:29,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:44:29,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:44:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:44:29,184 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:44:29,184 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:44:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:44:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 03:44:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:44:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:44:29,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:44:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:44:29,185 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:44:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 03:44:29,397 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:44:29,402 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:44:29,609 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:44:29,654 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:44:29,655 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 03:44:29,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:29 BoogieIcfgContainer [2023-11-19 03:44:29,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:44:29,660 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:44:29,660 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:44:29,669 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:44:29,669 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:29" (1/1) ... [2023-11-19 03:44:29,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:44:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:44:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-19 03:44:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-19 03:44:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:44:29,741 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:44:29,742 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:44:29,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:44:29,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:44:29,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 03:44:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:44:29,904 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:44:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:44:29,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 03:44:29,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:44:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:44:29,958 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:44:29,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-19 03:44:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:44:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2023-11-19 03:44:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-19 03:44:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:44:29,993 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:44:29,993 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:44:29,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:44:29,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:44:30,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-19 03:44:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:30,176 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:44:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:30,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:44:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:44:30,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-19 03:44:30,433 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-19 03:44:30,475 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated [2023-11-19 03:44:30,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:44:30 ImpRootNode [2023-11-19 03:44:30,483 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:44:30,483 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:44:30,483 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:44:30,484 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:44:30,484 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:44:29" (3/4) ... [2023-11-19 03:44:30,486 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:44:30,487 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:44:30,489 INFO L158 Benchmark]: Toolchain (without parser) took 3092.24ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 58.6MB in the beginning and 52.6MB in the end (delta: 6.0MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2023-11-19 03:44:30,490 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 61.8MB in the beginning and 61.8MB in the end (delta: 83.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:44:30,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1525.56ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 58.6MB in the beginning and 67.8MB in the end (delta: -9.2MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2023-11-19 03:44:30,492 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.09ms. Allocated memory is still 117.4MB. Free memory was 67.8MB in the beginning and 64.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 03:44:30,493 INFO L158 Benchmark]: Boogie Preprocessor took 70.23ms. Allocated memory is still 117.4MB. Free memory was 64.9MB in the beginning and 62.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:44:30,499 INFO L158 Benchmark]: RCFGBuilder took 569.14ms. Allocated memory is still 117.4MB. Free memory was 62.5MB in the beginning and 77.7MB in the end (delta: -15.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-11-19 03:44:30,500 INFO L158 Benchmark]: CodeCheck took 823.15ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 52.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-19 03:44:30,501 INFO L158 Benchmark]: Witness Printer took 4.38ms. Allocated memory is still 117.4MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:44:30,511 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 58 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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); [L1578] 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) [L1578] 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] [L1579] CALL CWE191_Integer_Underflow__int_fgets_postdec_03_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 61.8MB in the beginning and 61.8MB in the end (delta: 83.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1525.56ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 58.6MB in the beginning and 67.8MB in the end (delta: -9.2MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.09ms. Allocated memory is still 117.4MB. Free memory was 67.8MB in the beginning and 64.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.23ms. Allocated memory is still 117.4MB. Free memory was 64.9MB in the beginning and 62.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 569.14ms. Allocated memory is still 117.4MB. Free memory was 62.5MB in the beginning and 77.7MB in the end (delta: -15.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * CodeCheck took 823.15ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 52.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.38ms. Allocated memory is still 117.4MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:44:30,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f31b5e4-5519-4c00-910e-64ebef661e51/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