./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_14_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/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_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_14_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/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_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/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 0ce746480af60c6da28b24742747a00aff8e7e17320209b0d87adef2e9e8338f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:41:56,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:41:56,443 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:41:56,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:41:56,453 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:41:56,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:41:56,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:41:56,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:41:56,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:41:56,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:41:56,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:41:56,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:41:56,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:41:56,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:41:56,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:41:56,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:41:56,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:41:56,515 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:41:56,515 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:41:56,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:41:56,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:41:56,518 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:41:56,518 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:41:56,520 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:41:56,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:41:56,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:41:56,522 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:41:56,522 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:41:56,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:41:56,523 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:41:56,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:41:56,525 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:41:56,525 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_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ce746480af60c6da28b24742747a00aff8e7e17320209b0d87adef2e9e8338f [2023-11-21 18:41:56,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:41:56,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:41:56,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:41:56,900 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:41:56,901 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:41:56,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_14_bad.i [2023-11-21 18:42:00,283 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:42:00,758 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:42:00,759 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_14_bad.i [2023-11-21 18:42:00,792 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/data/fe6e5a79c/9ead7de067b94a9284f2ee80034f1e17/FLAG37a4ecaa2 [2023-11-21 18:42:00,808 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/data/fe6e5a79c/9ead7de067b94a9284f2ee80034f1e17 [2023-11-21 18:42:00,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:42:00,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:42:00,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:42:00,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:42:00,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:42:00,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:42:00" (1/1) ... [2023-11-21 18:42:00,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29302a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:00, skipping insertion in model container [2023-11-21 18:42:00,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:42:00" (1/1) ... [2023-11-21 18:42:00,929 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:42:01,354 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:42:02,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:42:02,211 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:42:02,252 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:42:02,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:42:02,650 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:02,651 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:02,651 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:02,651 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:02,652 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:02,652 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:02,662 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:42:02,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02 WrapperNode [2023-11-21 18:42:02,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:42:02,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:42:02,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:42:02,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:42:02,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,801 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-21 18:42:02,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:42:02,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:42:02,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:42:02,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:42:02,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:42:02,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:42:02,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:42:02,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:42:02,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:02" (1/1) ... [2023-11-21 18:42:02,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:42:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:42:02,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:42:02,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:42:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:42:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:42:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:42:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:42:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 18:42:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:42:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:42:02,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:42:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:42:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:42:02,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:42:03,128 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:42:03,133 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:42:03,289 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:42:03,335 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:42:03,336 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:42:03,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:42:03 BoogieIcfgContainer [2023-11-21 18:42:03,338 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:42:03,339 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:42:03,340 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:42:03,354 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:42:03,354 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:42:03" (1/1) ... [2023-11-21 18:42:03,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:42:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:42:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-21 18:42:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-21 18:42:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:42:03,451 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:42:03,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:42:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:42:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:42:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:42:03,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 21 transitions. [2023-11-21 18:42:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-21 18:42:03,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 18:42:03,810 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:42:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:42:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:42:03,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:42:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:42:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:42:04,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:42:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:42:04,054 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-21 18:42:04,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:42:04 ImpRootNode [2023-11-21 18:42:04,102 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:42:04,102 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:42:04,103 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:42:04,103 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:42:04,104 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:42:03" (3/4) ... [2023-11-21 18:42:04,106 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:42:04,107 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:42:04,109 INFO L158 Benchmark]: Toolchain (without parser) took 3295.00ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 92.0MB in the beginning and 142.9MB in the end (delta: -50.9MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2023-11-21 18:42:04,109 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 130.0MB. Free memory was 75.4MB in the beginning and 75.3MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:42:04,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1850.10ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 91.7MB in the beginning and 128.9MB in the end (delta: -37.2MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2023-11-21 18:42:04,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 137.13ms. Allocated memory is still 195.0MB. Free memory was 128.9MB in the beginning and 125.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:42:04,112 INFO L158 Benchmark]: Boogie Preprocessor took 39.42ms. Allocated memory is still 195.0MB. Free memory was 125.9MB in the beginning and 124.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:42:04,114 INFO L158 Benchmark]: RCFGBuilder took 494.65ms. Allocated memory is still 195.0MB. Free memory was 124.7MB in the beginning and 110.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 18:42:04,119 INFO L158 Benchmark]: CodeCheck took 762.32ms. Allocated memory is still 195.0MB. Free memory was 110.1MB in the beginning and 143.8MB in the end (delta: -33.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:42:04,120 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 195.0MB. Free memory was 143.8MB in the beginning and 142.9MB in the end (delta: 875.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:42:04,131 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 15 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1578] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={12:31}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_14_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE globalFive==5 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE globalFive==5 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 130.0MB. Free memory was 75.4MB in the beginning and 75.3MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1850.10ms. Allocated memory was 130.0MB in the beginning and 195.0MB in the end (delta: 65.0MB). Free memory was 91.7MB in the beginning and 128.9MB in the end (delta: -37.2MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 137.13ms. Allocated memory is still 195.0MB. Free memory was 128.9MB in the beginning and 125.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.42ms. Allocated memory is still 195.0MB. Free memory was 125.9MB in the beginning and 124.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.65ms. Allocated memory is still 195.0MB. Free memory was 124.7MB in the beginning and 110.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 762.32ms. Allocated memory is still 195.0MB. Free memory was 110.1MB in the beginning and 143.8MB in the end (delta: -33.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 195.0MB. Free memory was 143.8MB in the beginning and 142.9MB in the end (delta: 875.2kB). 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 18:42:04,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/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_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_14_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/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_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/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 0ce746480af60c6da28b24742747a00aff8e7e17320209b0d87adef2e9e8338f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:42:07,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:42:07,634 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-21 18:42:07,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:42:07,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:42:07,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:42:07,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:42:07,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:42:07,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:42:07,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:42:07,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:42:07,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:42:07,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:42:07,716 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:42:07,716 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:42:07,717 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:42:07,717 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:42:07,718 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:42:07,718 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:42:07,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:42:07,720 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:42:07,721 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:42:07,722 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:42:07,722 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:42:07,722 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:42:07,723 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-21 18:42:07,723 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:42:07,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:42:07,724 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:42:07,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:42:07,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:42:07,727 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:42:07,727 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:42:07,728 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:42:07,728 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-21 18:42:07,728 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:42:07,729 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_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ce746480af60c6da28b24742747a00aff8e7e17320209b0d87adef2e9e8338f [2023-11-21 18:42:08,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:42:08,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:42:08,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:42:08,211 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:42:08,212 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:42:08,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_14_bad.i [2023-11-21 18:42:11,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:42:12,049 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:42:12,050 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_14_bad.i [2023-11-21 18:42:12,081 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/data/08dd7a0f0/5a53d27a901e4c99b45778d60e1bdac1/FLAG0bc22cb29 [2023-11-21 18:42:12,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/data/08dd7a0f0/5a53d27a901e4c99b45778d60e1bdac1 [2023-11-21 18:42:12,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:42:12,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:42:12,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:42:12,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:42:12,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:42:12,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:42:12" (1/1) ... [2023-11-21 18:42:12,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e57fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:12, skipping insertion in model container [2023-11-21 18:42:12,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:42:12" (1/1) ... [2023-11-21 18:42:12,176 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:42:12,733 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:42:13,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:42:13,385 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:42:13,409 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:42:13,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:42:13,677 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:13,677 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:13,677 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:13,677 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:13,677 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:13,678 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:42:13,686 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:42:13,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13 WrapperNode [2023-11-21 18:42:13,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:42:13,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:42:13,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:42:13,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:42:13,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,734 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,761 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2023-11-21 18:42:13,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:42:13,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:42:13,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:42:13,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:42:13,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:42:13,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:42:13,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:42:13,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:42:13,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:42:13" (1/1) ... [2023-11-21 18:42:13,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:42:13,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:42:13,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:42:13,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:42:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:42:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:42:13,947 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:42:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:42:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:42:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:42:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:42:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:42:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:42:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:42:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 18:42:14,166 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:42:14,169 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:42:14,345 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:42:14,396 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:42:14,396 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:42:14,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:42:14 BoogieIcfgContainer [2023-11-21 18:42:14,399 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:42:14,400 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:42:14,400 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:42:14,412 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:42:14,413 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:42:14" (1/1) ... [2023-11-21 18:42:14,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:42:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:42:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-21 18:42:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-21 18:42:14,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:42:14,496 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:42:14,497 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:42:14,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:42:14,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:42:14,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-21 18:42:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:42:14,703 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-21 18:42:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:42:14,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:42:14,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:42:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:42:14,819 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-21 18:42:14,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-21 18:42:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:42:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 20 states and 26 transitions. [2023-11-21 18:42:14,945 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-11-21 18:42:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 18:42:14,947 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:42:14,947 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:42:14,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:42:14,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:42:14,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-21 18:42:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:42:15,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:42:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:42:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:42:15,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:42:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:42:15,454 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2023-11-21 18:42:15,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-21 18:42:15,462 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-21 18:42:15,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:42:15 ImpRootNode [2023-11-21 18:42:15,503 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:42:15,504 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:42:15,504 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:42:15,504 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:42:15,505 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:42:14" (3/4) ... [2023-11-21 18:42:15,508 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:42:15,509 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:42:15,510 INFO L158 Benchmark]: Toolchain (without parser) took 3408.49ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 61.0MB in the beginning and 69.0MB in the end (delta: -8.0MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-11-21 18:42:15,511 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 67.1MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:42:15,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1584.06ms. Allocated memory is still 88.1MB. Free memory was 60.8MB in the beginning and 47.9MB in the end (delta: 12.9MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2023-11-21 18:42:15,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.33ms. Allocated memory is still 88.1MB. Free memory was 47.9MB in the beginning and 45.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:42:15,513 INFO L158 Benchmark]: Boogie Preprocessor took 81.76ms. Allocated memory is still 88.1MB. Free memory was 45.0MB in the beginning and 42.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:42:15,514 INFO L158 Benchmark]: RCFGBuilder took 553.67ms. Allocated memory is still 88.1MB. Free memory was 42.8MB in the beginning and 51.5MB in the end (delta: -8.6MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2023-11-21 18:42:15,515 INFO L158 Benchmark]: CodeCheck took 1103.59ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 51.0MB in the beginning and 69.6MB in the end (delta: -18.6MB). Peak memory consumption was 480.9kB. Max. memory is 16.1GB. [2023-11-21 18:42:15,516 INFO L158 Benchmark]: Witness Printer took 5.26ms. Allocated memory is still 107.0MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:42:15,520 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 17 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1578] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_14_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE globalFive==5 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE globalFive==5 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 67.1MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1584.06ms. Allocated memory is still 88.1MB. Free memory was 60.8MB in the beginning and 47.9MB in the end (delta: 12.9MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.33ms. Allocated memory is still 88.1MB. Free memory was 47.9MB in the beginning and 45.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.76ms. Allocated memory is still 88.1MB. Free memory was 45.0MB in the beginning and 42.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 553.67ms. Allocated memory is still 88.1MB. Free memory was 42.8MB in the beginning and 51.5MB in the end (delta: -8.6MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * CodeCheck took 1103.59ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 51.0MB in the beginning and 69.6MB in the end (delta: -18.6MB). Peak memory consumption was 480.9kB. Max. memory is 16.1GB. * Witness Printer took 5.26ms. Allocated memory is still 107.0MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:42:15,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_180c9c85-5db3-4d7a-b6fc-6a2c7b63b876/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