./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 647f45b8ea711897b723bc94e8bcadcfaeb96b9098cf2973f5d00bda379da59c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:27:48,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:27:48,097 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:27:48,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:27:48,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:27:48,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:27:48,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:27:48,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:27:48,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:27:48,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:27:48,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:27:48,132 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:27:48,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:27:48,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:27:48,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:27:48,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:27:48,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:27:48,135 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:27:48,136 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:27:48,137 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:27:48,137 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:27:48,138 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:27:48,139 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:27:48,139 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:27:48,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:27:48,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:27:48,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:27:48,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:27:48,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:27:48,143 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:27:48,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:27:48,144 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:27:48,144 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_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647f45b8ea711897b723bc94e8bcadcfaeb96b9098cf2973f5d00bda379da59c [2023-11-23 20:27:48,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:27:48,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:27:48,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:27:48,429 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:27:48,430 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:27:48,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i [2023-11-23 20:27:51,590 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:27:52,077 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:27:52,078 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i [2023-11-23 20:27:52,110 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/data/9219a6987/bb72131fe5954005ad4499aef00f74d5/FLAGe0bd90b3e [2023-11-23 20:27:52,201 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/data/9219a6987/bb72131fe5954005ad4499aef00f74d5 [2023-11-23 20:27:52,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:27:52,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:27:52,206 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:27:52,206 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:27:52,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:27:52,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:27:52" (1/1) ... [2023-11-23 20:27:52,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d67f2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:52, skipping insertion in model container [2023-11-23 20:27:52,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:27:52" (1/1) ... [2023-11-23 20:27:52,308 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:27:52,726 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:27:53,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:27:53,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:27:53,392 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:27:53,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:27:53,661 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:53,661 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:53,661 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:53,662 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:53,662 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:53,662 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:53,670 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:27:53,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53 WrapperNode [2023-11-23 20:27:53,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:27:53,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:27:53,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:27:53,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:27:53,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,738 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-11-23 20:27:53,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:27:53,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:27:53,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:27:53,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:27:53,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:27:53,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:27:53,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:27:53,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:27:53,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:53" (1/1) ... [2023-11-23 20:27:53,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:27:53,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:27:53,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:27:53,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:27:53,877 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:27:53,878 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:27:53,878 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:27:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:27:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:27:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:27:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:27:53,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:27:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:27:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:27:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:27:54,049 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:27:54,052 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:27:54,226 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:27:54,272 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:27:54,272 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:27:54,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:27:54 BoogieIcfgContainer [2023-11-23 20:27:54,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:27:54,275 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:27:54,275 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:27:54,286 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:27:54,287 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:27:54" (1/1) ... [2023-11-23 20:27:54,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:27:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:27:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-23 20:27:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-23 20:27:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:27:54,362 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:27:54,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:27:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:27:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:27:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:27:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 21 transitions. [2023-11-23 20:27:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-23 20:27:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:27:54,696 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:27:54,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:27:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:54,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:27:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:54,915 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:27:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:54,957 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-23 20:27:54,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:27:54 ImpRootNode [2023-11-23 20:27:54,987 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:27:54,988 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:27:54,988 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:27:54,988 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:27:54,989 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:27:54" (3/4) ... [2023-11-23 20:27:54,991 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:27:54,992 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:27:54,995 INFO L158 Benchmark]: Toolchain (without parser) took 2789.64ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 112.7MB in the beginning and 94.3MB in the end (delta: 18.5MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2023-11-23 20:27:54,995 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:27:54,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1465.60ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 112.7MB in the beginning and 138.3MB in the end (delta: -25.6MB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. [2023-11-23 20:27:54,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.26ms. Allocated memory is still 182.5MB. Free memory was 138.3MB in the beginning and 136.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:27:54,998 INFO L158 Benchmark]: Boogie Preprocessor took 32.50ms. Allocated memory is still 182.5MB. Free memory was 136.2MB in the beginning and 134.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:27:54,998 INFO L158 Benchmark]: RCFGBuilder took 501.48ms. Allocated memory is still 182.5MB. Free memory was 134.1MB in the beginning and 119.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:27:54,999 INFO L158 Benchmark]: CodeCheck took 712.15ms. Allocated memory is still 182.5MB. Free memory was 119.4MB in the beginning and 94.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 20:27:55,000 INFO L158 Benchmark]: Witness Printer took 5.89ms. Allocated memory is still 182.5MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:27:55,003 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: 0.6s, 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); [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={13:28}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_13_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 GLOBAL_CONST_FIVE==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 GLOBAL_CONST_FIVE==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 - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1465.60ms. Allocated memory was 146.8MB in the beginning and 182.5MB in the end (delta: 35.7MB). Free memory was 112.7MB in the beginning and 138.3MB in the end (delta: -25.6MB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.26ms. Allocated memory is still 182.5MB. Free memory was 138.3MB in the beginning and 136.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.50ms. Allocated memory is still 182.5MB. Free memory was 136.2MB in the beginning and 134.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 501.48ms. Allocated memory is still 182.5MB. Free memory was 134.1MB in the beginning and 119.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 712.15ms. Allocated memory is still 182.5MB. Free memory was 119.4MB in the beginning and 94.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 5.89ms. Allocated memory is still 182.5MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:27:55,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 647f45b8ea711897b723bc94e8bcadcfaeb96b9098cf2973f5d00bda379da59c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:27:57,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:27:57,818 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:27:57,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:27:57,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:27:57,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:27:57,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:27:57,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:27:57,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:27:57,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:27:57,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:27:57,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:27:57,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:27:57,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:27:57,857 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:27:57,858 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:27:57,859 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:27:57,859 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:27:57,860 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:27:57,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:27:57,861 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:27:57,870 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:27:57,870 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:27:57,871 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:27:57,871 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:27:57,871 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:27:57,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:27:57,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:27:57,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:27:57,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:27:57,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:27:57,875 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:27:57,875 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:27:57,876 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:27:57,876 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:27:57,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:27:57,877 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_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647f45b8ea711897b723bc94e8bcadcfaeb96b9098cf2973f5d00bda379da59c [2023-11-23 20:27:58,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:27:58,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:27:58,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:27:58,321 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:27:58,322 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:27:58,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i [2023-11-23 20:28:01,567 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:28:02,040 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:28:02,040 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_13_bad.i [2023-11-23 20:28:02,068 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/data/b2d355599/fa18562e58e34ba98fd6cd3e689326b3/FLAGb881ed0f8 [2023-11-23 20:28:02,084 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/data/b2d355599/fa18562e58e34ba98fd6cd3e689326b3 [2023-11-23 20:28:02,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:28:02,089 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:28:02,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:28:02,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:28:02,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:28:02,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:28:02" (1/1) ... [2023-11-23 20:28:02,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c1df66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:02, skipping insertion in model container [2023-11-23 20:28:02,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:28:02" (1/1) ... [2023-11-23 20:28:02,165 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:28:02,702 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:28:03,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:28:03,556 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:28:03,591 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:28:03,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:28:03,945 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:28:03,946 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:28:03,946 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:28:03,946 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:28:03,946 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:28:03,946 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:28:03,955 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:28:03,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03 WrapperNode [2023-11-23 20:28:03,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:28:03,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:28:03,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:28:03,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:28:03,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,071 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2023-11-23 20:28:04,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:28:04,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:28:04,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:28:04,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:28:04,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:28:04,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:28:04,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:28:04,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:28:04,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:28:03" (1/1) ... [2023-11-23 20:28:04,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:28:04,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:28:04,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:28:04,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:28:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:28:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:28:04,250 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:28:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:28:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:28:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:28:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:28:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:28:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:28:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:28:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:28:04,536 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:28:04,539 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:28:04,682 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:28:04,745 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:28:04,745 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:28:04,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:28:04 BoogieIcfgContainer [2023-11-23 20:28:04,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:28:04,748 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:28:04,748 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:28:04,764 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:28:04,764 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:28:04" (1/1) ... [2023-11-23 20:28:04,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:28:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:28:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-23 20:28:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-23 20:28:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:28:04,875 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:28:04,876 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:28:04,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:28:04,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:28:04,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:28:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:28:05,054 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-23 20:28:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:28:05,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:28:05,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:28:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:28:05,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:28:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:28:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 20 states and 26 transitions. [2023-11-23 20:28:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-11-23 20:28:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:28:05,317 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:28:05,317 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:28:05,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:28:05,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:28:05,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-23 20:28:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:28:05,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:28:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:28:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:28:05,851 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:28:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:28:05,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:28:05,943 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-23 20:28:05,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:28:05 ImpRootNode [2023-11-23 20:28:05,996 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:28:05,997 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:28:05,998 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:28:05,998 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:28:05,999 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:28:04" (3/4) ... [2023-11-23 20:28:06,001 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:28:06,003 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:28:06,005 INFO L158 Benchmark]: Toolchain (without parser) took 3915.04ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 47.5MB in the beginning and 41.3MB in the end (delta: 6.2MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2023-11-23 20:28:06,005 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 75.5MB. Free memory is still 51.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:28:06,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1866.60ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 47.2MB in the beginning and 65.6MB in the end (delta: -18.5MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2023-11-23 20:28:06,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 114.38ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 62.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:28:06,010 INFO L158 Benchmark]: Boogie Preprocessor took 64.56ms. Allocated memory is still 96.5MB. Free memory was 62.6MB in the beginning and 60.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:28:06,017 INFO L158 Benchmark]: RCFGBuilder took 607.69ms. Allocated memory is still 96.5MB. Free memory was 60.5MB in the beginning and 43.0MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:28:06,018 INFO L158 Benchmark]: CodeCheck took 1248.83ms. Allocated memory is still 96.5MB. Free memory was 43.0MB in the beginning and 41.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2023-11-23 20:28:06,019 INFO L158 Benchmark]: Witness Printer took 5.86ms. Allocated memory is still 96.5MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:28:06,031 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: 1.1s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 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, 0.1s 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); [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_13_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 GLOBAL_CONST_FIVE==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 GLOBAL_CONST_FIVE==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 - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 75.5MB. Free memory is still 51.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1866.60ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 47.2MB in the beginning and 65.6MB in the end (delta: -18.5MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 114.38ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 62.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.56ms. Allocated memory is still 96.5MB. Free memory was 62.6MB in the beginning and 60.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 607.69ms. Allocated memory is still 96.5MB. Free memory was 60.5MB in the beginning and 43.0MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 1248.83ms. Allocated memory is still 96.5MB. Free memory was 43.0MB in the beginning and 41.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. * Witness Printer took 5.86ms. Allocated memory is still 96.5MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:28:06,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52def282-4845-4dc0-b6ef-5b704c16e0ae/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample