./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2 --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 b3dda94dbaa4019f2d6b4807d8dac24168aa09a3e6ed50d0ed1e738e226c7fcb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:43:16,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:43:16,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:43:16,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:43:16,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:43:16,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:43:16,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:43:16,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:43:16,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:43:16,679 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:43:16,680 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:43:16,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:43:16,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:43:16,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:43:16,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:43:16,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:43:16,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:43:16,685 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:43:16,685 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:43:16,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:43:16,686 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:43:16,687 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:43:16,688 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:43:16,688 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:43:16,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:43:16,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:43:16,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:43:16,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:43:16,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:43:16,691 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:43:16,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:43:16,692 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:43:16,693 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_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3dda94dbaa4019f2d6b4807d8dac24168aa09a3e6ed50d0ed1e738e226c7fcb [2023-11-21 18:43:17,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:43:17,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:43:17,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:43:17,050 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:43:17,050 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:43:17,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i [2023-11-21 18:43:20,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:43:20,653 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:43:20,655 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i [2023-11-21 18:43:20,690 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/data/90802043d/7f67fec46bd2408c944c0ce26ccd6829/FLAG7d0d235d4 [2023-11-21 18:43:20,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/data/90802043d/7f67fec46bd2408c944c0ce26ccd6829 [2023-11-21 18:43:20,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:43:20,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:43:20,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:43:20,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:43:20,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:43:20,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:43:20" (1/1) ... [2023-11-21 18:43:20,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3baf5096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:20, skipping insertion in model container [2023-11-21 18:43:20,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:43:20" (1/1) ... [2023-11-21 18:43:20,810 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:43:21,246 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:43:21,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:43:21,969 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:43:22,006 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:43:22,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:43:22,342 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:22,342 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:22,342 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:22,343 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:22,343 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:22,343 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:22,351 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:43:22,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22 WrapperNode [2023-11-21 18:43:22,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:43:22,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:43:22,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:43:22,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:43:22,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,466 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-21 18:43:22,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:43:22,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:43:22,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:43:22,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:43:22,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:43:22,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:43:22,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:43:22,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:43:22,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:43:22,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:43:22,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:43:22,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:43:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:43:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:43:22,593 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:43:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:43:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 18:43:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:43:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:43:22,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:43:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:43:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:43:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:43:22,788 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:43:22,791 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:43:22,922 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:43:22,963 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:43:22,964 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:43:22,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:43:22 BoogieIcfgContainer [2023-11-21 18:43:22,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:43:22,967 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:43:22,970 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:43:22,983 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:43:22,984 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:43:22" (1/1) ... [2023-11-21 18:43:22,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:43:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:43:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-21 18:43:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-21 18:43:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:43:23,083 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:43:23,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:43:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:43:23,321 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:43:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:43:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:43:23,507 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:43:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:43:23,553 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:43:23,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:43:23 ImpRootNode [2023-11-21 18:43:23,599 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:43:23,601 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:43:23,601 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:43:23,602 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:43:23,602 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:43:22" (3/4) ... [2023-11-21 18:43:23,607 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:43:23,608 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:43:23,609 INFO L158 Benchmark]: Toolchain (without parser) took 2891.96ms. Allocated memory was 153.1MB in the beginning and 268.4MB in the end (delta: 115.3MB). Free memory was 117.0MB in the beginning and 190.1MB in the end (delta: -73.1MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2023-11-21 18:43:23,610 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:43:23,611 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1634.45ms. Allocated memory was 153.1MB in the beginning and 268.4MB in the end (delta: 115.3MB). Free memory was 117.0MB in the beginning and 228.9MB in the end (delta: -111.9MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2023-11-21 18:43:23,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 115.65ms. Allocated memory is still 268.4MB. Free memory was 228.9MB in the beginning and 225.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:43:23,613 INFO L158 Benchmark]: Boogie Preprocessor took 29.88ms. Allocated memory is still 268.4MB. Free memory was 225.5MB in the beginning and 223.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:43:23,614 INFO L158 Benchmark]: RCFGBuilder took 465.14ms. Allocated memory is still 268.4MB. Free memory was 223.6MB in the beginning and 207.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 18:43:23,615 INFO L158 Benchmark]: CodeCheck took 632.22ms. Allocated memory is still 268.4MB. Free memory was 207.9MB in the beginning and 190.1MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 18:43:23,616 INFO L158 Benchmark]: Witness Printer took 7.14ms. Allocated memory is still 268.4MB. Free memory is still 190.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:43:23,627 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: 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, 9 NumberOfCodeBlocks, 9 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: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1568. 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); [L1548] static int badStatic = 0; [L1581] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1581] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={13:19}, badStatic=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_predec_21_bad() [L1562] int data; [L1563] data = 0 [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1566] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1568] EXPR data = atoi(inputBuffer) [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564-L1574] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1575] badStatic = 1 [L1576] CALL badSink(data) [L1551] COND TRUE \read(badStatic) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, badStatic=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, badStatic=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 0.30ms. Allocated memory is still 115.3MB. Free memory is still 70.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1634.45ms. Allocated memory was 153.1MB in the beginning and 268.4MB in the end (delta: 115.3MB). Free memory was 117.0MB in the beginning and 228.9MB in the end (delta: -111.9MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 115.65ms. Allocated memory is still 268.4MB. Free memory was 228.9MB in the beginning and 225.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.88ms. Allocated memory is still 268.4MB. Free memory was 225.5MB in the beginning and 223.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 465.14ms. Allocated memory is still 268.4MB. Free memory was 223.6MB in the beginning and 207.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 632.22ms. Allocated memory is still 268.4MB. Free memory was 207.9MB in the beginning and 190.1MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 7.14ms. Allocated memory is still 268.4MB. Free memory is still 190.1MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:43:23,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/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_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2 --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 b3dda94dbaa4019f2d6b4807d8dac24168aa09a3e6ed50d0ed1e738e226c7fcb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:43:26,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:43:26,703 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-21 18:43:26,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:43:26,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:43:26,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:43:26,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:43:26,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:43:26,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:43:26,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:43:26,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:43:26,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:43:26,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:43:26,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:43:26,788 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:43:26,788 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:43:26,789 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:43:26,790 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:43:26,790 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:43:26,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:43:26,792 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:43:26,794 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:43:26,795 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:43:26,795 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:43:26,796 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:43:26,796 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-21 18:43:26,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:43:26,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:43:26,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:43:26,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:43:26,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:43:26,801 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:43:26,802 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:43:26,803 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:43:26,803 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-21 18:43:26,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:43:26,804 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_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3dda94dbaa4019f2d6b4807d8dac24168aa09a3e6ed50d0ed1e738e226c7fcb [2023-11-21 18:43:27,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:43:27,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:43:27,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:43:27,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:43:27,305 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:43:27,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i [2023-11-21 18:43:30,600 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:43:31,131 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:43:31,132 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i [2023-11-21 18:43:31,164 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/data/68957f258/a16f0ba9a47948dabae588e43ce72763/FLAG0ab4cead5 [2023-11-21 18:43:31,187 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/data/68957f258/a16f0ba9a47948dabae588e43ce72763 [2023-11-21 18:43:31,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:43:31,195 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:43:31,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:43:31,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:43:31,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:43:31,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:43:31" (1/1) ... [2023-11-21 18:43:31,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652087e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:31, skipping insertion in model container [2023-11-21 18:43:31,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:43:31" (1/1) ... [2023-11-21 18:43:31,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:43:31,887 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:43:32,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:43:32,746 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:43:32,780 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:43:32,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:43:33,062 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:33,062 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:33,062 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:33,062 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:33,063 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:33,063 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:43:33,071 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:43:33,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33 WrapperNode [2023-11-21 18:43:33,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:43:33,074 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:43:33,074 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:43:33,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:43:33,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,173 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2023-11-21 18:43:33,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:43:33,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:43:33,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:43:33,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:43:33,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,213 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:43:33,250 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:43:33,250 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:43:33,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:43:33,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:43:33,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:43:33,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:43:33,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:43:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:43:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:43:33,346 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:43:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:43:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:43:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:43:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:43:33,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:43:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:43:33,347 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:43:33,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 18:43:33,523 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:43:33,526 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:43:33,790 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:43:33,864 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:43:33,864 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:43:33,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:43:33 BoogieIcfgContainer [2023-11-21 18:43:33,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:43:33,868 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:43:33,868 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:43:33,880 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:43:33,880 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:43:33" (1/1) ... [2023-11-21 18:43:33,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:43:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:43:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-21 18:43:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-21 18:43:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:43:33,975 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:43:33,975 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:43:33,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:43:33,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:43:34,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-21 18:43:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:43:34,251 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:43:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:43:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:43:34,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:43:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:43:34,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-21 18:43:34,562 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:43:34,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:43:34 ImpRootNode [2023-11-21 18:43:34,605 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:43:34,607 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:43:34,608 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:43:34,608 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:43:34,608 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:43:33" (3/4) ... [2023-11-21 18:43:34,611 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:43:34,612 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:43:34,613 INFO L158 Benchmark]: Toolchain (without parser) took 3417.97ms. Allocated memory is still 94.4MB. Free memory was 66.3MB in the beginning and 42.1MB in the end (delta: 24.2MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2023-11-21 18:43:34,614 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 60.8MB. Free memory was 36.5MB in the beginning and 36.4MB in the end (delta: 78.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:43:34,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1873.84ms. Allocated memory is still 94.4MB. Free memory was 66.1MB in the beginning and 53.8MB in the end (delta: 12.3MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2023-11-21 18:43:34,616 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.38ms. Allocated memory is still 94.4MB. Free memory was 53.8MB in the beginning and 50.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:43:34,617 INFO L158 Benchmark]: Boogie Preprocessor took 65.45ms. Allocated memory is still 94.4MB. Free memory was 50.8MB in the beginning and 48.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:43:34,618 INFO L158 Benchmark]: RCFGBuilder took 616.88ms. Allocated memory is still 94.4MB. Free memory was 48.7MB in the beginning and 59.4MB in the end (delta: -10.8MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2023-11-21 18:43:34,619 INFO L158 Benchmark]: CodeCheck took 737.17ms. Allocated memory is still 94.4MB. Free memory was 59.4MB in the beginning and 42.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:43:34,620 INFO L158 Benchmark]: Witness Printer took 5.01ms. Allocated memory is still 94.4MB. Free memory was 42.1MB in the beginning and 42.1MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:43:34,632 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: 0.7s, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 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: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1568. 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); [L1548] static int badStatic = 0; [L1581] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, badStatic=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1581] 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}, badStatic=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_predec_21_bad() [L1562] int data; [L1563] data = 0 [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1566] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1568] EXPR data = atoi(inputBuffer) [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564-L1574] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1575] badStatic = 1 [L1576] CALL badSink(data) [L1551] COND TRUE \read(badStatic) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, badStatic=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, badStatic=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 0.73ms. Allocated memory is still 60.8MB. Free memory was 36.5MB in the beginning and 36.4MB in the end (delta: 78.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1873.84ms. Allocated memory is still 94.4MB. Free memory was 66.1MB in the beginning and 53.8MB in the end (delta: 12.3MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.38ms. Allocated memory is still 94.4MB. Free memory was 53.8MB in the beginning and 50.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.45ms. Allocated memory is still 94.4MB. Free memory was 50.8MB in the beginning and 48.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 616.88ms. Allocated memory is still 94.4MB. Free memory was 48.7MB in the beginning and 59.4MB in the end (delta: -10.8MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * CodeCheck took 737.17ms. Allocated memory is still 94.4MB. Free memory was 59.4MB in the beginning and 42.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.01ms. Allocated memory is still 94.4MB. Free memory was 42.1MB in the beginning and 42.1MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:43:34,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eb93da8-e904-4674-b5ab-b80c73bd4430/bin/ukojak-verify-i0I2FZA1j2/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