./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_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_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/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_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/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_f065f179-d68d-45a6-8091-4a08d64d10ad/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 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:44:18,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:44:18,626 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:44:18,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:44:18,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:44:18,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:44:18,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:44:18,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:44:18,696 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:44:18,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:44:18,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:44:18,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:44:18,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:44:18,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:44:18,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:44:18,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:44:18,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:44:18,705 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:44:18,706 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:44:18,706 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:44:18,706 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:44:18,707 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:44:18,708 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:44:18,708 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:44:18,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:44:18,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:44:18,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:44:18,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:44:18,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:44:18,711 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:44:18,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:44:18,711 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:44:18,712 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_f065f179-d68d-45a6-8091-4a08d64d10ad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 [2023-11-21 18:44:19,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:44:19,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:44:19,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:44:19,043 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:44:19,044 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:44:19,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2023-11-21 18:44:22,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:44:22,724 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:44:22,725 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2023-11-21 18:44:22,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/data/63a67bbff/7978ff74298048b79789046e9b02034f/FLAGb5f70885c [2023-11-21 18:44:22,778 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/data/63a67bbff/7978ff74298048b79789046e9b02034f [2023-11-21 18:44:22,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:44:22,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:44:22,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:44:22,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:44:22,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:44:22,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:44:22" (1/1) ... [2023-11-21 18:44:22,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473bbe8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:22, skipping insertion in model container [2023-11-21 18:44:22,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:44:22" (1/1) ... [2023-11-21 18:44:22,887 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:44:23,283 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:44:24,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:44:24,044 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:44:24,080 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:44:24,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:44:24,417 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:24,417 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:24,418 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:24,418 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:24,418 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:24,418 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:24,427 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:44:24,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24 WrapperNode [2023-11-21 18:44:24,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:44:24,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:44:24,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:44:24,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:44:24,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,503 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-21 18:44:24,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:44:24,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:44:24,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:44:24,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:44:24,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:44:24,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:44:24,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:44:24,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:44:24,538 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:24" (1/1) ... [2023-11-21 18:44:24,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:44:24,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:44:24,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:44:24,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:44:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:44:24,632 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:44:24,632 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:44:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:44:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 18:44:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:44:24,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:44:24,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:44:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:44:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:44:24,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:44:24,804 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:44:24,805 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:44:24,999 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:44:25,048 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:44:25,052 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:44:25,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:44:25 BoogieIcfgContainer [2023-11-21 18:44:25,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:44:25,055 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:44:25,055 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:44:25,067 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:44:25,067 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:44:25" (1/1) ... [2023-11-21 18:44:25,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:44:25,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:44:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-21 18:44:25,135 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-21 18:44:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:44:25,139 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:44:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:44:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:44:25,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:44:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:44:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:44:25,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:44:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:44:25,568 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:44:25,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:44:25 ImpRootNode [2023-11-21 18:44:25,603 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:44:25,606 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:44:25,606 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:44:25,606 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:44:25,606 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:44:25" (3/4) ... [2023-11-21 18:44:25,608 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:44:25,609 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:44:25,611 INFO L158 Benchmark]: Toolchain (without parser) took 2824.24ms. Allocated memory was 121.6MB in the beginning and 172.0MB in the end (delta: 50.3MB). Free memory was 87.4MB in the beginning and 74.5MB in the end (delta: 13.0MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2023-11-21 18:44:25,611 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:44:25,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1637.23ms. Allocated memory was 121.6MB in the beginning and 172.0MB in the end (delta: 50.3MB). Free memory was 87.1MB in the beginning and 112.2MB in the end (delta: -25.1MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2023-11-21 18:44:25,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.66ms. Allocated memory is still 172.0MB. Free memory was 112.2MB in the beginning and 110.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:44:25,613 INFO L158 Benchmark]: Boogie Preprocessor took 32.31ms. Allocated memory is still 172.0MB. Free memory was 110.1MB in the beginning and 108.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:44:25,614 INFO L158 Benchmark]: RCFGBuilder took 517.41ms. Allocated memory is still 172.0MB. Free memory was 108.0MB in the beginning and 92.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 18:44:25,615 INFO L158 Benchmark]: CodeCheck took 548.10ms. Allocated memory is still 172.0MB. Free memory was 92.3MB in the beginning and 74.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 18:44:25,616 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 172.0MB. Free memory was 74.5MB in the beginning and 74.5MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:44:25,619 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 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); [L1548] int CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, 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) [L1571] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:19}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_predec_22_bad() [L1552] int data; [L1553] data = 0 [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."); } } [L1565] CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_predec_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal) VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] --data VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1637.23ms. Allocated memory was 121.6MB in the beginning and 172.0MB in the end (delta: 50.3MB). Free memory was 87.1MB in the beginning and 112.2MB in the end (delta: -25.1MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.66ms. Allocated memory is still 172.0MB. Free memory was 112.2MB in the beginning and 110.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.31ms. Allocated memory is still 172.0MB. Free memory was 110.1MB in the beginning and 108.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 517.41ms. Allocated memory is still 172.0MB. Free memory was 108.0MB in the beginning and 92.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 548.10ms. Allocated memory is still 172.0MB. Free memory was 92.3MB in the beginning and 74.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 172.0MB. Free memory was 74.5MB in the beginning and 74.5MB 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 18:44:25,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/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_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/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_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/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_f065f179-d68d-45a6-8091-4a08d64d10ad/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 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:44:28,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:44:28,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-21 18:44:28,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:44:28,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:44:28,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:44:28,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:44:28,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:44:28,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:44:28,607 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:44:28,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:44:28,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:44:28,608 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:44:28,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:44:28,611 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:44:28,611 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:44:28,611 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:44:28,612 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:44:28,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:44:28,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:44:28,613 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:44:28,614 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:44:28,615 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:44:28,615 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:44:28,616 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:44:28,616 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-21 18:44:28,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:44:28,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:44:28,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:44:28,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:44:28,620 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:44:28,620 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:44:28,620 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:44:28,621 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:44:28,621 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-21 18:44:28,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:44:28,622 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_f065f179-d68d-45a6-8091-4a08d64d10ad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 [2023-11-21 18:44:29,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:44:29,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:44:29,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:44:29,091 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:44:29,092 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:44:29,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2023-11-21 18:44:32,206 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:44:32,765 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:44:32,765 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2023-11-21 18:44:32,804 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/data/86157588a/321de99e98e84719888b461245bdb831/FLAG59f77813c [2023-11-21 18:44:32,824 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/data/86157588a/321de99e98e84719888b461245bdb831 [2023-11-21 18:44:32,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:44:32,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:44:32,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:44:32,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:44:32,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:44:32,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:44:32" (1/1) ... [2023-11-21 18:44:32,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2abb580e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:32, skipping insertion in model container [2023-11-21 18:44:32,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:44:32" (1/1) ... [2023-11-21 18:44:32,944 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:44:33,440 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:44:33,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:44:33,988 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:44:34,014 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:44:34,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:44:34,346 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:34,346 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:34,347 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:34,347 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:34,347 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:34,347 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:44:34,355 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:44:34,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34 WrapperNode [2023-11-21 18:44:34,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:44:34,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:44:34,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:44:34,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:44:34,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,476 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2023-11-21 18:44:34,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:44:34,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:44:34,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:44:34,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:44:34,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,509 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:44:34,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:44:34,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:44:34,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:44:34,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:44:34" (1/1) ... [2023-11-21 18:44:34,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:44:34,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:44:34,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:44:34,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:44:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:44:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:44:34,604 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:44:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:44:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:44:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:44:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:44:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:44:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:44:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:44:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 18:44:34,796 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:44:34,799 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:44:35,056 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:44:35,137 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:44:35,140 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:44:35,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:44:35 BoogieIcfgContainer [2023-11-21 18:44:35,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:44:35,144 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:44:35,145 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:44:35,156 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:44:35,157 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:44:35" (1/1) ... [2023-11-21 18:44:35,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:44:35,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:44:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-21 18:44:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-21 18:44:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 18:44:35,254 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:44:35,255 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:44:35,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:44:35,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:44:35,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-21 18:44:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:44:35,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:44:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:44:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:44:35,820 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:44:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:44:35,895 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-21 18:44:35,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-21 18:44:35,903 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:44:35,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:44:35 ImpRootNode [2023-11-21 18:44:35,948 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:44:35,950 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:44:35,951 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:44:35,951 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:44:35,951 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:44:35" (3/4) ... [2023-11-21 18:44:35,954 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:44:35,955 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:44:35,957 INFO L158 Benchmark]: Toolchain (without parser) took 3124.33ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 43.5MB in the beginning and 51.8MB in the end (delta: -8.3MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2023-11-21 18:44:35,958 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 71.3MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:44:35,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1520.90ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 43.3MB in the beginning and 39.8MB in the end (delta: 3.5MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2023-11-21 18:44:35,960 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.64ms. Allocated memory is still 92.3MB. Free memory was 39.8MB in the beginning and 63.3MB in the end (delta: -23.6MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2023-11-21 18:44:35,961 INFO L158 Benchmark]: Boogie Preprocessor took 37.01ms. Allocated memory is still 92.3MB. Free memory was 63.3MB in the beginning and 61.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:44:35,962 INFO L158 Benchmark]: RCFGBuilder took 627.84ms. Allocated memory is still 92.3MB. Free memory was 61.2MB in the beginning and 43.8MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 18:44:35,963 INFO L158 Benchmark]: CodeCheck took 804.09ms. Allocated memory is still 92.3MB. Free memory was 43.8MB in the beginning and 51.8MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:44:35,963 INFO L158 Benchmark]: Witness Printer took 5.30ms. Allocated memory is still 92.3MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:44:35,976 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 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); [L1548] int CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, 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) [L1571] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, 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] [L1572] CALL CWE191_Integer_Underflow__int_fgets_predec_22_bad() [L1552] int data; [L1553] data = 0 [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."); } } [L1565] CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_predec_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal) VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] --data VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 71.3MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1520.90ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 43.3MB in the beginning and 39.8MB in the end (delta: 3.5MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.64ms. Allocated memory is still 92.3MB. Free memory was 39.8MB in the beginning and 63.3MB in the end (delta: -23.6MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.01ms. Allocated memory is still 92.3MB. Free memory was 63.3MB in the beginning and 61.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 627.84ms. Allocated memory is still 92.3MB. Free memory was 61.2MB in the beginning and 43.8MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 804.09ms. Allocated memory is still 92.3MB. Free memory was 43.8MB in the beginning and 51.8MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.30ms. Allocated memory is still 92.3MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:44:36,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f065f179-d68d-45a6-8091-4a08d64d10ad/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