./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_13_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_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/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_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_13_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/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_b389a79d-b963-4fe9-8980-b3a6674fe188/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 dfeb487d17793275cc8e7428ab2afde196b4f2aeed0429cf92ffa906b791329e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:12:03,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:12:04,012 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 03:12:04,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:12:04,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:12:04,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:12:04,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:12:04,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:12:04,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:12:04,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:12:04,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:12:04,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:12:04,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:12:04,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:12:04,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:12:04,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:12:04,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:12:04,088 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:12:04,088 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:12:04,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:12:04,089 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:12:04,089 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:12:04,090 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:12:04,090 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:12:04,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:12:04,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:12:04,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:12:04,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:12:04,093 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:12:04,094 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:12:04,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:12:04,095 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:12:04,096 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_b389a79d-b963-4fe9-8980-b3a6674fe188/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfeb487d17793275cc8e7428ab2afde196b4f2aeed0429cf92ffa906b791329e [2023-11-19 03:12:04,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:12:04,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:12:04,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:12:04,458 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:12:04,458 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:12:04,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_13_bad.i [2023-11-19 03:12:07,782 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:12:08,291 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:12:08,292 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_13_bad.i [2023-11-19 03:12:08,324 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/data/4b886a6fe/e070b298380b4c069a8f4b01b96efb35/FLAG839603ed3 [2023-11-19 03:12:08,346 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/data/4b886a6fe/e070b298380b4c069a8f4b01b96efb35 [2023-11-19 03:12:08,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:12:08,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:12:08,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:12:08,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:12:08,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:12:08,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:12:08" (1/1) ... [2023-11-19 03:12:08,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5a3e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:08, skipping insertion in model container [2023-11-19 03:12:08,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:12:08" (1/1) ... [2023-11-19 03:12:08,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:12:08,986 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:12:09,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:12:09,733 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:12:09,773 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:12:09,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:12:10,057 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:10,058 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:10,058 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:10,058 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:10,058 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:10,058 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:10,067 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:12:10,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10 WrapperNode [2023-11-19 03:12:10,068 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:12:10,069 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:12:10,069 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:12:10,069 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:12:10,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,144 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-11-19 03:12:10,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:12:10,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:12:10,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:12:10,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:12:10,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,167 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:12:10,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:12:10,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:12:10,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:12:10,214 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:12:10,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:12:10,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:12:10,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:12:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:12:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:12:10,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:12:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:12:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 03:12:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:12:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:12:10,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:12:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:12:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:12:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:12:10,506 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:12:10,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:12:10,663 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:12:10,708 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:12:10,709 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:12:10,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:12:10 BoogieIcfgContainer [2023-11-19 03:12:10,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:12:10,716 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:12:10,716 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:12:10,729 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:12:10,729 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:12:10" (1/1) ... [2023-11-19 03:12:10,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:12:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:12:10,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-19 03:12:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-19 03:12:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:12:10,836 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:12:10,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:12:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:12:11,102 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 03:12:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:12:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 21 transitions. [2023-11-19 03:12:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-19 03:12:11,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:12:11,153 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:12:11,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:12:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:12:11,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:12:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:12:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:12:11,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:12:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:12:11,353 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-19 03:12:11,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:12:11 ImpRootNode [2023-11-19 03:12:11,391 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:12:11,392 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:12:11,392 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:12:11,392 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:12:11,393 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:12:10" (3/4) ... [2023-11-19 03:12:11,395 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:12:11,397 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:12:11,398 INFO L158 Benchmark]: Toolchain (without parser) took 3039.49ms. Allocated memory is still 155.2MB. Free memory was 118.0MB in the beginning and 100.8MB in the end (delta: 17.2MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2023-11-19 03:12:11,399 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 155.2MB. Free memory was 124.0MB in the beginning and 123.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:12:11,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1706.20ms. Allocated memory is still 155.2MB. Free memory was 117.5MB in the beginning and 64.1MB in the end (delta: 53.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2023-11-19 03:12:11,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.12ms. Allocated memory is still 155.2MB. Free memory was 64.1MB in the beginning and 61.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:12:11,401 INFO L158 Benchmark]: Boogie Preprocessor took 63.12ms. Allocated memory is still 155.2MB. Free memory was 61.4MB in the beginning and 59.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:12:11,402 INFO L158 Benchmark]: RCFGBuilder took 505.21ms. Allocated memory is still 155.2MB. Free memory was 59.9MB in the beginning and 44.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 03:12:11,403 INFO L158 Benchmark]: CodeCheck took 674.90ms. Allocated memory is still 155.2MB. Free memory was 44.6MB in the beginning and 100.8MB in the end (delta: -56.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:12:11,403 INFO L158 Benchmark]: Witness Printer took 5.58ms. Allocated memory is still 155.2MB. Free memory is still 100.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:12:11,407 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: 0.6s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 15 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 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, 13 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={18:19}, argv={18:19}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_13_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] [L1552] COND TRUE GLOBAL_CONST_FIVE==5 [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] [L1566] COND TRUE GLOBAL_CONST_FIVE==5 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 0.38ms. Allocated memory is still 155.2MB. Free memory was 124.0MB in the beginning and 123.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1706.20ms. Allocated memory is still 155.2MB. Free memory was 117.5MB in the beginning and 64.1MB in the end (delta: 53.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.12ms. Allocated memory is still 155.2MB. Free memory was 64.1MB in the beginning and 61.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.12ms. Allocated memory is still 155.2MB. Free memory was 61.4MB in the beginning and 59.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 505.21ms. Allocated memory is still 155.2MB. Free memory was 59.9MB in the beginning and 44.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 674.90ms. Allocated memory is still 155.2MB. Free memory was 44.6MB in the beginning and 100.8MB in the end (delta: -56.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.58ms. Allocated memory is still 155.2MB. Free memory is still 100.8MB. 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 03:12:11,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/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_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/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_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_13_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/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_b389a79d-b963-4fe9-8980-b3a6674fe188/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 dfeb487d17793275cc8e7428ab2afde196b4f2aeed0429cf92ffa906b791329e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:12:14,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:12:14,576 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 03:12:14,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:12:14,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:12:14,647 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:12:14,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:12:14,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:12:14,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:12:14,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:12:14,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:12:14,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:12:14,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:12:14,659 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:12:14,659 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 03:12:14,660 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 03:12:14,660 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:12:14,661 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 03:12:14,661 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:12:14,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:12:14,662 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:12:14,663 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:12:14,664 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:12:14,664 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:12:14,665 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:12:14,665 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 03:12:14,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:12:14,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:12:14,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:12:14,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:12:14,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:12:14,669 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 03:12:14,669 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:12:14,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:12:14,670 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 03:12:14,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 03:12:14,671 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_b389a79d-b963-4fe9-8980-b3a6674fe188/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfeb487d17793275cc8e7428ab2afde196b4f2aeed0429cf92ffa906b791329e [2023-11-19 03:12:15,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:12:15,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:12:15,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:12:15,150 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:12:15,151 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:12:15,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_13_bad.i [2023-11-19 03:12:18,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:12:18,916 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:12:18,917 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_13_bad.i [2023-11-19 03:12:18,952 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/data/e1e8f53b8/154a953522474b1ba658c9665152058e/FLAGbba7fb940 [2023-11-19 03:12:18,973 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/data/e1e8f53b8/154a953522474b1ba658c9665152058e [2023-11-19 03:12:18,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:12:18,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:12:18,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:12:18,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:12:18,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:12:18,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:12:18" (1/1) ... [2023-11-19 03:12:19,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd61438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:19, skipping insertion in model container [2023-11-19 03:12:19,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:12:18" (1/1) ... [2023-11-19 03:12:19,101 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:12:19,534 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:12:20,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:12:20,261 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:12:20,283 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:12:20,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:12:20,486 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:20,487 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:20,487 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:20,487 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:20,487 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:20,488 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:12:20,495 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:12:20,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20 WrapperNode [2023-11-19 03:12:20,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:12:20,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:12:20,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:12:20,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:12:20,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,557 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,585 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-19 03:12:20,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:12:20,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:12:20,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:12:20,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:12:20,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,620 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:12:20,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:12:20,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:12:20,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:12:20,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:12:20" (1/1) ... [2023-11-19 03:12:20,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:12:20,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:12:20,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:12:20,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:12:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:12:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:12:20,721 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:12:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:12:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 03:12:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:12:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:12:20,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:12:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:12:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:12:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 03:12:20,963 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:12:20,965 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:12:21,118 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:12:21,198 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:12:21,208 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:12:21,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:12:21 BoogieIcfgContainer [2023-11-19 03:12:21,214 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:12:21,215 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:12:21,215 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:12:21,224 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:12:21,224 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:12:21" (1/1) ... [2023-11-19 03:12:21,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:12:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:12:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-19 03:12:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-19 03:12:21,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:12:21,305 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:12:21,306 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:12:21,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:12:21,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:12:21,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 03:12:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:12:21,516 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:12:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:12:21,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:12:21,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:12:21,622 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 03:12:21,624 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:12:21,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-19 03:12:21,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:12:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 20 states and 26 transitions. [2023-11-19 03:12:21,729 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-11-19 03:12:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:12:21,732 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:12:21,732 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:12:21,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:12:21,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:12:21,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-19 03:12:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:12:21,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:12:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:12:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:12:22,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:12:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:12:22,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-19 03:12:22,243 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-19 03:12:22,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:12:22 ImpRootNode [2023-11-19 03:12:22,285 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:12:22,286 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:12:22,286 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:12:22,287 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:12:22,288 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:12:21" (3/4) ... [2023-11-19 03:12:22,289 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:12:22,291 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:12:22,292 INFO L158 Benchmark]: Toolchain (without parser) took 3309.69ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 49.5MB in the beginning and 65.2MB in the end (delta: -15.7MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-11-19 03:12:22,293 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 77.6MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:12:22,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1512.15ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 49.2MB in the beginning and 54.0MB in the end (delta: -4.7MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2023-11-19 03:12:22,295 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.53ms. Allocated memory is still 100.7MB. Free memory was 54.0MB in the beginning and 51.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:12:22,296 INFO L158 Benchmark]: Boogie Preprocessor took 39.04ms. Allocated memory is still 100.7MB. Free memory was 51.2MB in the beginning and 49.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:12:22,301 INFO L158 Benchmark]: RCFGBuilder took 587.29ms. Allocated memory is still 100.7MB. Free memory was 49.1MB in the beginning and 62.2MB in the end (delta: -13.1MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2023-11-19 03:12:22,301 INFO L158 Benchmark]: CodeCheck took 1071.03ms. Allocated memory is still 100.7MB. Free memory was 61.7MB in the beginning and 66.0MB in the end (delta: -4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:12:22,303 INFO L158 Benchmark]: Witness Printer took 4.61ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 65.2MB in the end (delta: 741.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:12:22,311 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: 1.0s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 17 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 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, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 2 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_predec_13_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] [L1552] COND TRUE GLOBAL_CONST_FIVE==5 [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] [L1566] COND TRUE GLOBAL_CONST_FIVE==5 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 0.39ms. Allocated memory is still 77.6MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1512.15ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 49.2MB in the beginning and 54.0MB in the end (delta: -4.7MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.53ms. Allocated memory is still 100.7MB. Free memory was 54.0MB in the beginning and 51.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.04ms. Allocated memory is still 100.7MB. Free memory was 51.2MB in the beginning and 49.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 587.29ms. Allocated memory is still 100.7MB. Free memory was 49.1MB in the beginning and 62.2MB in the end (delta: -13.1MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * CodeCheck took 1071.03ms. Allocated memory is still 100.7MB. Free memory was 61.7MB in the beginning and 66.0MB in the end (delta: -4.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.61ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 65.2MB in the end (delta: 741.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:12:22,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b389a79d-b963-4fe9-8980-b3a6674fe188/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