./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_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_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/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_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/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_c18d894b-361c-4639-a2e2-31a84f7fb703/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 ba64d58b3e01052798cfd796bd911f497689e4f5efd7291b07f123a324c18dc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:08:13,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:08:13,163 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 03:08:13,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:08:13,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:08:13,222 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:08:13,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:08:13,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:08:13,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:08:13,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:08:13,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:08:13,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:08:13,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:08:13,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:08:13,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:08:13,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:08:13,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:08:13,237 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:08:13,237 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:08:13,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:08:13,238 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:08:13,239 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:08:13,239 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:08:13,240 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:08:13,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:08:13,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:08:13,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:08:13,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:08:13,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:08:13,258 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:08:13,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:08:13,259 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:08:13,260 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_c18d894b-361c-4639-a2e2-31a84f7fb703/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba64d58b3e01052798cfd796bd911f497689e4f5efd7291b07f123a324c18dc2 [2023-11-19 03:08:13,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:08:13,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:08:13,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:08:13,656 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:08:13,657 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:08:13,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i [2023-11-19 03:08:16,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:08:17,307 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:08:17,311 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i [2023-11-19 03:08:17,349 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/data/545aa8f29/9fdbd82b133e47b2bac781723183dfd8/FLAGb8b883bda [2023-11-19 03:08:17,370 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/data/545aa8f29/9fdbd82b133e47b2bac781723183dfd8 [2023-11-19 03:08:17,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:08:17,377 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:08:17,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:08:17,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:08:17,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:08:17,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:17" (1/1) ... [2023-11-19 03:08:17,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c5e07d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:17, skipping insertion in model container [2023-11-19 03:08:17,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:17" (1/1) ... [2023-11-19 03:08:17,470 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:08:17,915 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:08:18,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:08:18,560 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:08:18,582 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:08:18,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:08:18,898 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:18,898 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:18,898 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:18,899 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:18,899 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:18,899 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:18,907 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:08:18,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18 WrapperNode [2023-11-19 03:08:18,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:08:18,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:08:18,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:08:18,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:08:18,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:18,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:19,000 INFO L138 Inliner]: procedures = 501, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-19 03:08:19,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:08:19,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:08:19,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:08:19,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:08:19,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:19,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:19,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:19,038 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:19,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:19,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:19,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:19,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:19,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:08:19,073 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:08:19,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:08:19,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:08:19,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:18" (1/1) ... [2023-11-19 03:08:19,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:08:19,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:08:19,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:08:19,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:08:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:08:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:08:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:08:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:08:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 03:08:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 03:08:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:08:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:08:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:08:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:08:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:08:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 03:08:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:08:19,337 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:08:19,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:08:19,485 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:08:19,529 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:08:19,530 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:08:19,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:19 BoogieIcfgContainer [2023-11-19 03:08:19,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:08:19,536 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:08:19,536 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:08:19,547 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:08:19,548 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:19" (1/1) ... [2023-11-19 03:08:19,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:08:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:08:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 03:08:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 03:08:19,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:08:19,616 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:08:19,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:08:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:08:19,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:08:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:08:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:08:20,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:08:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:08:20,127 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 03:08:20,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:08:20 ImpRootNode [2023-11-19 03:08:20,170 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:08:20,172 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:08:20,172 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:08:20,172 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:08:20,173 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:19" (3/4) ... [2023-11-19 03:08:20,177 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:08:20,178 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:08:20,180 INFO L158 Benchmark]: Toolchain (without parser) took 2801.98ms. Allocated memory was 163.6MB in the beginning and 205.5MB in the end (delta: 41.9MB). Free memory was 112.0MB in the beginning and 117.9MB in the end (delta: -5.9MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2023-11-19 03:08:20,181 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 163.6MB. Free memory is still 131.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:08:20,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1527.32ms. Allocated memory was 163.6MB in the beginning and 205.5MB in the end (delta: 41.9MB). Free memory was 111.4MB in the beginning and 160.9MB in the end (delta: -49.5MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2023-11-19 03:08:20,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.97ms. Allocated memory is still 205.5MB. Free memory was 160.9MB in the beginning and 157.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:08:20,184 INFO L158 Benchmark]: Boogie Preprocessor took 62.38ms. Allocated memory is still 205.5MB. Free memory was 157.8MB in the beginning and 155.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:08:20,185 INFO L158 Benchmark]: RCFGBuilder took 462.17ms. Allocated memory is still 205.5MB. Free memory was 155.7MB in the beginning and 139.9MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 03:08:20,186 INFO L158 Benchmark]: CodeCheck took 633.95ms. Allocated memory is still 205.5MB. Free memory was 139.9MB in the beginning and 119.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 03:08:20,187 INFO L158 Benchmark]: Witness Printer took 6.58ms. Allocated memory is still 205.5MB. Free memory was 119.0MB in the beginning and 117.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:08:20,202 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s 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: 1580]: 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); [L1571] 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) [L1571] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=45, argc=45, argv={44:46}, argv={44:46}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_sub_66_bad() [L1551] int data; [L1552] int dataArray[5]; [L1553] data = 0 [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."); } } [L1565] dataArray[2] = data [L1566] CALL CWE191_Integer_Underflow__int_fgets_sub_66b_badSink(dataArray) [L1578] EXPR dataArray[2] [L1578] int data = dataArray[2]; [L1580] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataArray={7:0}, dataArray={7:0}, 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 0.39ms. Allocated memory is still 163.6MB. Free memory is still 131.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1527.32ms. Allocated memory was 163.6MB in the beginning and 205.5MB in the end (delta: 41.9MB). Free memory was 111.4MB in the beginning and 160.9MB in the end (delta: -49.5MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.97ms. Allocated memory is still 205.5MB. Free memory was 160.9MB in the beginning and 157.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.38ms. Allocated memory is still 205.5MB. Free memory was 157.8MB in the beginning and 155.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 462.17ms. Allocated memory is still 205.5MB. Free memory was 155.7MB in the beginning and 139.9MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 633.95ms. Allocated memory is still 205.5MB. Free memory was 139.9MB in the beginning and 119.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 6.58ms. Allocated memory is still 205.5MB. Free memory was 119.0MB in the beginning and 117.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:08:20,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/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_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/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_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/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_c18d894b-361c-4639-a2e2-31a84f7fb703/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 ba64d58b3e01052798cfd796bd911f497689e4f5efd7291b07f123a324c18dc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:08:23,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:08:23,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 03:08:23,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:08:23,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:08:23,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:08:23,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:08:23,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:08:23,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:08:23,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:08:23,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:08:23,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:08:23,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:08:23,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:08:23,261 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 03:08:23,262 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 03:08:23,263 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:08:23,263 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 03:08:23,264 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:08:23,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:08:23,265 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:08:23,270 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:08:23,271 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:08:23,272 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:08:23,276 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:08:23,276 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 03:08:23,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:08:23,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:08:23,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:08:23,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:08:23,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:08:23,280 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 03:08:23,280 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:08:23,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:08:23,281 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 03:08:23,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 03:08:23,282 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_c18d894b-361c-4639-a2e2-31a84f7fb703/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba64d58b3e01052798cfd796bd911f497689e4f5efd7291b07f123a324c18dc2 [2023-11-19 03:08:23,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:08:23,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:08:23,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:08:23,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:08:23,783 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:08:23,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i [2023-11-19 03:08:27,191 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:08:27,736 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:08:27,737 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i [2023-11-19 03:08:27,778 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/data/a68ab9434/11e141e68d15463a96e15a4fcbc6d061/FLAG945317baa [2023-11-19 03:08:27,796 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/data/a68ab9434/11e141e68d15463a96e15a4fcbc6d061 [2023-11-19 03:08:27,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:08:27,802 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:08:27,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:08:27,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:08:27,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:08:27,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:27" (1/1) ... [2023-11-19 03:08:27,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50409b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:27, skipping insertion in model container [2023-11-19 03:08:27,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:27" (1/1) ... [2023-11-19 03:08:27,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:08:28,307 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:08:28,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:08:28,869 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:08:28,890 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:08:29,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:08:29,140 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:29,141 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:29,141 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:29,141 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:29,141 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:29,141 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:08:29,149 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:08:29,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29 WrapperNode [2023-11-19 03:08:29,150 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:08:29,151 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:08:29,151 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:08:29,151 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:08:29,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,230 INFO L138 Inliner]: procedures = 506, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2023-11-19 03:08:29,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:08:29,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:08:29,232 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:08:29,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:08:29,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:08:29,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:08:29,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:08:29,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:08:29,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:08:29,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:08:29,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:08:29,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:08:29,373 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:08:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:08:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:08:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:08:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 03:08:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:08:29,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:08:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:08:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 03:08:29,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:08:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 03:08:29,376 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:08:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 03:08:29,579 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:08:29,582 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:08:29,747 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:08:29,790 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:08:29,791 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:08:29,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:29 BoogieIcfgContainer [2023-11-19 03:08:29,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:08:29,798 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:08:29,799 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:08:29,809 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:08:29,810 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:29" (1/1) ... [2023-11-19 03:08:29,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:08:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:08:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 03:08:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 03:08:29,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:08:29,894 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:08:29,894 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:08:29,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:08:29,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:08:29,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 03:08:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:08:30,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:08:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:08:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:08:30,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:08:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:08:30,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-19 03:08:30,628 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 03:08:30,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:08:30 ImpRootNode [2023-11-19 03:08:30,679 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:08:30,682 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:08:30,682 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:08:30,683 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:08:30,683 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:29" (3/4) ... [2023-11-19 03:08:30,685 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:08:30,686 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:08:30,688 INFO L158 Benchmark]: Toolchain (without parser) took 2885.02ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 48.3MB in the beginning and 57.2MB in the end (delta: -8.9MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2023-11-19 03:08:30,688 INFO L158 Benchmark]: CDTParser took 0.77ms. Allocated memory is still 75.5MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:08:30,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1342.54ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 48.1MB in the beginning and 46.6MB in the end (delta: 1.5MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2023-11-19 03:08:30,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.05ms. Allocated memory is still 96.5MB. Free memory was 46.6MB in the beginning and 43.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:08:30,692 INFO L158 Benchmark]: Boogie Preprocessor took 50.82ms. Allocated memory is still 96.5MB. Free memory was 43.4MB in the beginning and 67.9MB in the end (delta: -24.5MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2023-11-19 03:08:30,693 INFO L158 Benchmark]: RCFGBuilder took 514.63ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 49.5MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 03:08:30,694 INFO L158 Benchmark]: CodeCheck took 880.92ms. Allocated memory is still 96.5MB. Free memory was 49.5MB in the beginning and 57.2MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:08:30,694 INFO L158 Benchmark]: Witness Printer took 4.66ms. Allocated memory is still 96.5MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:08:30,703 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: 1580]: 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); [L1571] 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) [L1571] 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] [L1572] CALL CWE191_Integer_Underflow__int_fgets_sub_66_bad() [L1551] int data; [L1552] int dataArray[5]; [L1553] data = 0 [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."); } } [L1565] dataArray[2] = data [L1566] CALL CWE191_Integer_Underflow__int_fgets_sub_66b_badSink(dataArray) [L1578] EXPR dataArray[2] [L1578] int data = dataArray[2]; [L1580] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataArray={6:0}, dataArray={6:0}, 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 0.77ms. Allocated memory is still 75.5MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1342.54ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 48.1MB in the beginning and 46.6MB in the end (delta: 1.5MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.05ms. Allocated memory is still 96.5MB. Free memory was 46.6MB in the beginning and 43.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.82ms. Allocated memory is still 96.5MB. Free memory was 43.4MB in the beginning and 67.9MB in the end (delta: -24.5MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * RCFGBuilder took 514.63ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 49.5MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 880.92ms. Allocated memory is still 96.5MB. Free memory was 49.5MB in the beginning and 57.2MB in the end (delta: -7.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.66ms. Allocated memory is still 96.5MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:08:30,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18d894b-361c-4639-a2e2-31a84f7fb703/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