./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_02_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/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_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/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_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/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 d4c0363683df592348879b691fb45f023f06c419e789579199aed32d09bd6eff --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:56:12,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:56:12,873 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 02:56:12,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 02:56:12,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 02:56:12,900 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:56:12,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:56:12,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:56:12,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:56:12,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:56:12,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:56:12,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:56:12,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 02:56:12,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:56:12,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:56:12,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:56:12,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:56:12,908 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 02:56:12,908 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 02:56:12,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:56:12,909 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:56:12,910 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:56:12,910 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:56:12,911 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:56:12,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:56:12,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:56:12,912 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:56:12,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:56:12,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:56:12,914 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 02:56:12,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 02:56:12,914 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:56:12,915 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_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4c0363683df592348879b691fb45f023f06c419e789579199aed32d09bd6eff [2023-11-19 02:56:13,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:56:13,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:56:13,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:56:13,238 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:56:13,239 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:56:13,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_02_bad.i [2023-11-19 02:56:16,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:56:16,720 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:56:16,722 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_02_bad.i [2023-11-19 02:56:16,753 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/data/7b66cb724/d279ff72b5b44c019f36dfefb5e62f0c/FLAG11fd60962 [2023-11-19 02:56:16,771 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/data/7b66cb724/d279ff72b5b44c019f36dfefb5e62f0c [2023-11-19 02:56:16,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:56:16,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:56:16,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:56:16,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:56:16,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:56:16,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:56:16" (1/1) ... [2023-11-19 02:56:16,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24dc0486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:16, skipping insertion in model container [2023-11-19 02:56:16,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:56:16" (1/1) ... [2023-11-19 02:56:16,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:56:17,249 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:56:17,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:56:17,882 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:56:17,909 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:56:17,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:56:18,124 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:18,127 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:18,128 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:18,128 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:18,128 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:18,128 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:18,137 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:56:18,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18 WrapperNode [2023-11-19 02:56:18,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:56:18,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:56:18,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:56:18,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:56:18,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,184 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,211 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-11-19 02:56:18,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:56:18,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:56:18,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:56:18,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:56:18,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:56:18,244 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:56:18,244 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:56:18,244 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:56:18,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:56:18,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:56:18,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:56:18,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:56:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 02:56:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 02:56:18,312 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 02:56:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 02:56:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 02:56:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:56:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:56:18,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:56:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 02:56:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 02:56:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 02:56:18,531 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:56:18,534 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:56:18,695 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:56:18,769 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:56:18,770 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 02:56:18,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:18 BoogieIcfgContainer [2023-11-19 02:56:18,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:56:18,776 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:56:18,777 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:56:18,786 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:56:18,786 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:18" (1/1) ... [2023-11-19 02:56:18,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:56:18,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:56:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2023-11-19 02:56:18,871 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-11-19 02:56:18,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 02:56:18,876 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:56:18,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:56:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:56:19,101 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 02:56:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:56:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 17 states and 19 transitions. [2023-11-19 02:56:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-19 02:56:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 02:56:19,130 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:56:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:56:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:19,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:56:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:19,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:56:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:19,346 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-19 02:56:19,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 02:56:19 ImpRootNode [2023-11-19 02:56:19,383 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 02:56:19,384 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 02:56:19,384 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 02:56:19,385 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 02:56:19,385 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:18" (3/4) ... [2023-11-19 02:56:19,388 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 02:56:19,390 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 02:56:19,391 INFO L158 Benchmark]: Toolchain (without parser) took 2612.42ms. Allocated memory was 144.7MB in the beginning and 182.5MB in the end (delta: 37.7MB). Free memory was 108.7MB in the beginning and 103.9MB in the end (delta: 4.8MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2023-11-19 02:56:19,392 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 144.7MB. Free memory was 114.0MB in the beginning and 113.9MB in the end (delta: 80.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:56:19,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1357.67ms. Allocated memory was 144.7MB in the beginning and 182.5MB in the end (delta: 37.7MB). Free memory was 108.7MB in the beginning and 147.0MB in the end (delta: -38.3MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2023-11-19 02:56:19,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.51ms. Allocated memory is still 182.5MB. Free memory was 147.0MB in the beginning and 143.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 02:56:19,395 INFO L158 Benchmark]: Boogie Preprocessor took 31.08ms. Allocated memory is still 182.5MB. Free memory was 143.7MB in the beginning and 142.8MB in the end (delta: 946.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:56:19,396 INFO L158 Benchmark]: RCFGBuilder took 531.53ms. Allocated memory is still 182.5MB. Free memory was 142.8MB in the beginning and 127.0MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 02:56:19,397 INFO L158 Benchmark]: CodeCheck took 606.81ms. Allocated memory is still 182.5MB. Free memory was 127.0MB in the beginning and 103.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 02:56:19,397 INFO L158 Benchmark]: Witness Printer took 5.58ms. Allocated memory is still 182.5MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:56:19,402 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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); [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=13, argc=13, argv={12:18}, argv={12:18}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_02_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] data - 1 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 0.36ms. Allocated memory is still 144.7MB. Free memory was 114.0MB in the beginning and 113.9MB in the end (delta: 80.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1357.67ms. Allocated memory was 144.7MB in the beginning and 182.5MB in the end (delta: 37.7MB). Free memory was 108.7MB in the beginning and 147.0MB in the end (delta: -38.3MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.51ms. Allocated memory is still 182.5MB. Free memory was 147.0MB in the beginning and 143.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.08ms. Allocated memory is still 182.5MB. Free memory was 143.7MB in the beginning and 142.8MB in the end (delta: 946.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 531.53ms. Allocated memory is still 182.5MB. Free memory was 142.8MB in the beginning and 127.0MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 606.81ms. Allocated memory is still 182.5MB. Free memory was 127.0MB in the beginning and 103.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.58ms. Allocated memory is still 182.5MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 02:56:19,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/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_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/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_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/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 d4c0363683df592348879b691fb45f023f06c419e789579199aed32d09bd6eff --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:56:22,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:56:22,358 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 02:56:22,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:56:22,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:56:22,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:56:22,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:56:22,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:56:22,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:56:22,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:56:22,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:56:22,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:56:22,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:56:22,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:56:22,397 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 02:56:22,397 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 02:56:22,398 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 02:56:22,398 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 02:56:22,399 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 02:56:22,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:56:22,400 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:56:22,401 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:56:22,401 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:56:22,402 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:56:22,402 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 02:56:22,403 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 02:56:22,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:56:22,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:56:22,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:56:22,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:56:22,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:56:22,406 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 02:56:22,406 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 02:56:22,406 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:56:22,407 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 02:56:22,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 02:56:22,407 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_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4c0363683df592348879b691fb45f023f06c419e789579199aed32d09bd6eff [2023-11-19 02:56:22,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:56:22,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:56:22,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:56:22,827 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:56:22,832 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:56:22,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_02_bad.i [2023-11-19 02:56:25,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:56:26,330 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:56:26,330 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_02_bad.i [2023-11-19 02:56:26,366 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/data/0864ed61a/198e0f031b4646dcbf9b3dc280cf2204/FLAG7826aaf79 [2023-11-19 02:56:26,383 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/data/0864ed61a/198e0f031b4646dcbf9b3dc280cf2204 [2023-11-19 02:56:26,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:56:26,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:56:26,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:56:26,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:56:26,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:56:26,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:56:26" (1/1) ... [2023-11-19 02:56:26,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9b1717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:26, skipping insertion in model container [2023-11-19 02:56:26,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:56:26" (1/1) ... [2023-11-19 02:56:26,483 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:56:26,882 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:56:27,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:56:27,483 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:56:27,530 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 02:56:27,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:56:27,906 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:27,906 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:27,906 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:27,907 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:27,907 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:27,907 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 02:56:27,917 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:56:27,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27 WrapperNode [2023-11-19 02:56:27,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:56:27,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:56:27,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:56:27,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:56:27,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:27,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:28,035 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-11-19 02:56:28,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:56:28,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:56:28,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:56:28,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:56:28,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:28,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:28,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:28,075 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:28,087 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:28,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:28,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:28,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:28,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:56:28,123 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:56:28,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:56:28,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:56:28,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:27" (1/1) ... [2023-11-19 02:56:28,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:56:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:56:28,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:56:28,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:56:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 02:56:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 02:56:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 02:56:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 02:56:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 02:56:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:56:28,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:56:28,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:56:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 02:56:28,265 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 02:56:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 02:56:28,481 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:56:28,485 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:56:28,724 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:56:28,809 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:56:28,813 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 02:56:28,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:28 BoogieIcfgContainer [2023-11-19 02:56:28,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:56:28,822 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:56:28,823 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:56:28,836 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:56:28,836 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:28" (1/1) ... [2023-11-19 02:56:28,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:56:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:56:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2023-11-19 02:56:28,947 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-11-19 02:56:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 02:56:28,955 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:56:28,956 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 02:56:28,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 02:56:28,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 02:56:29,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 02:56:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:56:29,211 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 02:56:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:56:29,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 02:56:29,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:56:29,306 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 02:56:29,313 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 02:56:29,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-19 02:56:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:56:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 17 states and 19 transitions. [2023-11-19 02:56:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-19 02:56:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 02:56:29,359 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:56:29,359 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 02:56:29,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 02:56:29,364 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 02:56:29,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-19 02:56:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:29,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:56:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:29,877 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:56:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:29,943 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 02:56:29,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-19 02:56:29,955 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-19 02:56:30,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 02:56:30 ImpRootNode [2023-11-19 02:56:30,007 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 02:56:30,008 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 02:56:30,008 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 02:56:30,009 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 02:56:30,009 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:28" (3/4) ... [2023-11-19 02:56:30,012 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 02:56:30,014 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 02:56:30,015 INFO L158 Benchmark]: Toolchain (without parser) took 3626.37ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 27.4MB in the beginning and 63.1MB in the end (delta: -35.7MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2023-11-19 02:56:30,016 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 62.9MB. Free memory is still 39.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:56:30,018 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1524.79ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 27.3MB in the beginning and 39.6MB in the end (delta: -12.4MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2023-11-19 02:56:30,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 114.40ms. Allocated memory is still 83.9MB. Free memory was 39.6MB in the beginning and 36.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:56:30,021 INFO L158 Benchmark]: Boogie Preprocessor took 85.63ms. Allocated memory is still 83.9MB. Free memory was 36.8MB in the beginning and 34.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:56:30,028 INFO L158 Benchmark]: RCFGBuilder took 696.54ms. Allocated memory is still 83.9MB. Free memory was 34.7MB in the beginning and 39.6MB in the end (delta: -5.0MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2023-11-19 02:56:30,030 INFO L158 Benchmark]: CodeCheck took 1185.19ms. Allocated memory was 83.9MB in the beginning and 111.1MB in the end (delta: 27.3MB). Free memory was 39.6MB in the beginning and 63.1MB in the end (delta: -23.5MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2023-11-19 02:56:30,031 INFO L158 Benchmark]: Witness Printer took 5.66ms. Allocated memory is still 111.1MB. Free memory is still 63.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:56:30,042 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, 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, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 52 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_02_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] data - 1 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 0.49ms. Allocated memory is still 62.9MB. Free memory is still 39.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1524.79ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 27.3MB in the beginning and 39.6MB in the end (delta: -12.4MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 114.40ms. Allocated memory is still 83.9MB. Free memory was 39.6MB in the beginning and 36.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.63ms. Allocated memory is still 83.9MB. Free memory was 36.8MB in the beginning and 34.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 696.54ms. Allocated memory is still 83.9MB. Free memory was 34.7MB in the beginning and 39.6MB in the end (delta: -5.0MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * CodeCheck took 1185.19ms. Allocated memory was 83.9MB in the beginning and 111.1MB in the end (delta: 27.3MB). Free memory was 39.6MB in the beginning and 63.1MB in the end (delta: -23.5MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Witness Printer took 5.66ms. Allocated memory is still 111.1MB. Free memory is still 63.1MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 02:56:30,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9dfd93a7-9099-4d7f-b598-aeedc20a3bbf/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