./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC --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 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:18:00,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:18:00,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:18:00,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:18:00,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:18:00,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:18:00,467 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:18:00,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:18:00,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:18:00,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:18:00,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:18:00,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:18:00,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:18:00,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:18:00,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:18:00,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:18:00,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:18:00,481 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:18:00,481 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:18:00,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:18:00,483 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:18:00,484 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:18:00,484 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:18:00,485 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:18:00,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:18:00,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:18:00,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:18:00,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:18:00,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:18:00,489 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:18:00,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:18:00,490 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:18:00,491 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_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a [2023-11-23 20:18:00,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:18:00,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:18:00,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:18:00,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:18:00,853 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:18:00,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2023-11-23 20:18:04,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:18:05,140 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:18:05,142 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2023-11-23 20:18:05,185 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/data/860397880/337c4806a6d449a98fe6ebb789ca6871/FLAGf593c4aed [2023-11-23 20:18:05,203 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/data/860397880/337c4806a6d449a98fe6ebb789ca6871 [2023-11-23 20:18:05,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:18:05,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:18:05,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:18:05,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:18:05,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:18:05,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:18:05" (1/1) ... [2023-11-23 20:18:05,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762e8c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:05, skipping insertion in model container [2023-11-23 20:18:05,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:18:05" (1/1) ... [2023-11-23 20:18:05,300 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:18:05,886 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:18:06,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:18:06,634 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:18:06,679 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:18:06,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:18:07,053 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:07,053 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:07,054 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:07,054 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:07,054 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:07,054 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:07,064 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:18:07,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07 WrapperNode [2023-11-23 20:18:07,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:18:07,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:18:07,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:18:07,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:18:07,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,177 INFO L138 Inliner]: procedures = 502, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 55 [2023-11-23 20:18:07,177 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:18:07,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:18:07,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:18:07,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:18:07,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,215 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:18:07,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:18:07,228 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:18:07,228 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:18:07,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:18:07,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:18:07,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:18:07,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:18:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:18:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:18:07,328 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:18:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:18:07,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:18:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:18:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:18:07,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:18:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:18:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:18:07,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:18:07,510 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:18:07,514 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:18:07,680 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:18:07,767 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:18:07,777 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:18:07,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:18:07 BoogieIcfgContainer [2023-11-23 20:18:07,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:18:07,782 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:18:07,782 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:18:07,796 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:18:07,796 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:18:07" (1/1) ... [2023-11-23 20:18:07,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:18:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:18:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:18:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:18:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:18:07,924 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:18:07,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:18:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:18:08,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:18:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:18:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:18:08,205 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:18:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:18:08,240 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:18:08,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:18:08 ImpRootNode [2023-11-23 20:18:08,292 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:18:08,293 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:18:08,293 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:18:08,293 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:18:08,294 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:18:07" (3/4) ... [2023-11-23 20:18:08,296 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:18:08,297 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:18:08,298 INFO L158 Benchmark]: Toolchain (without parser) took 3089.35ms. Allocated memory is still 169.9MB. Free memory was 121.0MB in the beginning and 136.3MB in the end (delta: -15.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:18:08,298 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 125.8MB. Free memory is still 71.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:18:08,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1855.42ms. Allocated memory is still 169.9MB. Free memory was 120.5MB in the beginning and 98.5MB in the end (delta: 22.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-23 20:18:08,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.56ms. Allocated memory is still 169.9MB. Free memory was 97.5MB in the beginning and 95.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:18:08,301 INFO L158 Benchmark]: Boogie Preprocessor took 48.29ms. Allocated memory is still 169.9MB. Free memory was 95.4MB in the beginning and 93.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:18:08,301 INFO L158 Benchmark]: RCFGBuilder took 552.81ms. Allocated memory is still 169.9MB. Free memory was 93.3MB in the beginning and 78.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:18:08,302 INFO L158 Benchmark]: CodeCheck took 510.01ms. Allocated memory is still 169.9MB. Free memory was 78.7MB in the beginning and 136.3MB in the end (delta: -57.6MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2023-11-23 20:18:08,302 INFO L158 Benchmark]: Witness Printer took 4.44ms. Allocated memory is still 169.9MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:18:08,306 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=27, argc=27, argv={28:26}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_52_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_52c_badSink(data) [L1582] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 125.8MB. Free memory is still 71.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1855.42ms. Allocated memory is still 169.9MB. Free memory was 120.5MB in the beginning and 98.5MB in the end (delta: 22.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 110.56ms. Allocated memory is still 169.9MB. Free memory was 97.5MB in the beginning and 95.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.29ms. Allocated memory is still 169.9MB. Free memory was 95.4MB in the beginning and 93.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 552.81ms. Allocated memory is still 169.9MB. Free memory was 93.3MB in the beginning and 78.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 510.01ms. Allocated memory is still 169.9MB. Free memory was 78.7MB in the beginning and 136.3MB in the end (delta: -57.6MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * Witness Printer took 4.44ms. Allocated memory is still 169.9MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:18:08,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/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_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC --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 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:18:11,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:18:11,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:18:11,478 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:18:11,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:18:11,480 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:18:11,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:18:11,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:18:11,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:18:11,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:18:11,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:18:11,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:18:11,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:18:11,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:18:11,496 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:18:11,496 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:18:11,497 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:18:11,497 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:18:11,498 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:18:11,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:18:11,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:18:11,501 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:18:11,502 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:18:11,502 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:18:11,503 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:18:11,503 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:18:11,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:18:11,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:18:11,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:18:11,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:18:11,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:18:11,507 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:18:11,508 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:18:11,508 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:18:11,509 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:18:11,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:18:11,509 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_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a [2023-11-23 20:18:12,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:18:12,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:18:12,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:18:12,054 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:18:12,055 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:18:12,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2023-11-23 20:18:15,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:18:16,136 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:18:16,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2023-11-23 20:18:16,167 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/data/4f7065e1a/b44d9fb5449c428b84c4cfdce40c5193/FLAG3cbd2825e [2023-11-23 20:18:16,183 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/data/4f7065e1a/b44d9fb5449c428b84c4cfdce40c5193 [2023-11-23 20:18:16,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:18:16,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:18:16,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:18:16,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:18:16,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:18:16,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:18:16" (1/1) ... [2023-11-23 20:18:16,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27de78f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:16, skipping insertion in model container [2023-11-23 20:18:16,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:18:16" (1/1) ... [2023-11-23 20:18:16,268 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:18:16,713 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:18:17,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:18:17,334 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:18:17,358 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:18:17,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:18:17,591 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:17,591 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:17,592 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:17,592 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:17,592 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:17,592 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:18:17,602 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:18:17,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17 WrapperNode [2023-11-23 20:18:17,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:18:17,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:18:17,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:18:17,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:18:17,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,689 INFO L138 Inliner]: procedures = 507, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 54 [2023-11-23 20:18:17,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:18:17,691 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:18:17,691 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:18:17,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:18:17,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:18:17,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:18:17,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:18:17,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:18:17,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:17" (1/1) ... [2023-11-23 20:18:17,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:18:17,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:18:17,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:18:17,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:18:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:18:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:18:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:18:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:18:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:18:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:18:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:18:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:18:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:18:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:18:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:18:18,129 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:18:18,134 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:18:18,387 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:18:18,488 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:18:18,489 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:18:18,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:18:18 BoogieIcfgContainer [2023-11-23 20:18:18,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:18:18,493 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:18:18,494 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:18:18,507 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:18:18,507 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:18:18" (1/1) ... [2023-11-23 20:18:18,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:18:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:18:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:18:18,587 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:18:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:18:18,592 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:18:18,592 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:18:18,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:18:18,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:18:18,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:18:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:18:18,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:18:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:18:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:18:19,154 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:18:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:18:19,240 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-23 20:18:19,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:18:19,253 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:18:19,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:18:19 ImpRootNode [2023-11-23 20:18:19,300 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:18:19,304 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:18:19,305 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:18:19,305 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:18:19,306 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:18:18" (3/4) ... [2023-11-23 20:18:19,308 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:18:19,310 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:18:19,312 INFO L158 Benchmark]: Toolchain (without parser) took 3123.77ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 45.6MB in the beginning and 37.8MB in the end (delta: 7.8MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2023-11-23 20:18:19,312 INFO L158 Benchmark]: CDTParser took 0.80ms. Allocated memory is still 73.4MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:18:19,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1413.89ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 45.4MB in the beginning and 56.1MB in the end (delta: -10.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-23 20:18:19,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.63ms. Allocated memory is still 90.2MB. Free memory was 56.1MB in the beginning and 52.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:18:19,316 INFO L158 Benchmark]: Boogie Preprocessor took 45.49ms. Allocated memory is still 90.2MB. Free memory was 52.9MB in the beginning and 50.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:18:19,317 INFO L158 Benchmark]: RCFGBuilder took 754.25ms. Allocated memory is still 90.2MB. Free memory was 50.8MB in the beginning and 55.5MB in the end (delta: -4.7MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2023-11-23 20:18:19,318 INFO L158 Benchmark]: CodeCheck took 807.09ms. Allocated memory is still 90.2MB. Free memory was 55.5MB in the beginning and 38.2MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:18:19,319 INFO L158 Benchmark]: Witness Printer took 5.94ms. Allocated memory is still 90.2MB. Free memory was 38.2MB in the beginning and 37.8MB in the end (delta: 459.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:18:19,334 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] 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}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_52_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_52c_badSink(data) [L1582] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80ms. Allocated memory is still 73.4MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1413.89ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 45.4MB in the beginning and 56.1MB in the end (delta: -10.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.63ms. Allocated memory is still 90.2MB. Free memory was 56.1MB in the beginning and 52.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.49ms. Allocated memory is still 90.2MB. Free memory was 52.9MB in the beginning and 50.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 754.25ms. Allocated memory is still 90.2MB. Free memory was 50.8MB in the beginning and 55.5MB in the end (delta: -4.7MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * CodeCheck took 807.09ms. Allocated memory is still 90.2MB. Free memory was 55.5MB in the beginning and 38.2MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.94ms. Allocated memory is still 90.2MB. Free memory was 38.2MB in the beginning and 37.8MB in the end (delta: 459.8kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:18:19,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfd4e83-4eff-45fb-b964-41ea4aea1cfd/bin/ukojak-verify-1t5iHCbJaC/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