./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/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_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/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_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/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 c1505671f45043d55fae334a2421f20d581bbaa5dda6423d580cd8cb1c356e93 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:41:42,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:41:42,192 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:41:42,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:41:42,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:41:42,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:41:42,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:41:42,222 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:41:42,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:41:42,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:41:42,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:41:42,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:41:42,225 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:41:42,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:41:42,226 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:41:42,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:41:42,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:41:42,228 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:41:42,228 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:41:42,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:41:42,229 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:41:42,230 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:41:42,230 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:41:42,231 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:41:42,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:41:42,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:41:42,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:41:42,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:41:42,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:41:42,234 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:41:42,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:41:42,234 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:41:42,235 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_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1505671f45043d55fae334a2421f20d581bbaa5dda6423d580cd8cb1c356e93 [2023-11-21 18:41:42,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:41:42,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:41:42,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:41:42,617 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:41:42,618 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:41:42,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i [2023-11-21 18:41:45,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:41:46,267 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:41:46,268 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i [2023-11-21 18:41:46,297 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/data/af946ac82/7a6d0cd057cb47c499a22cfd9a8752f7/FLAG8db89131c [2023-11-21 18:41:46,317 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/data/af946ac82/7a6d0cd057cb47c499a22cfd9a8752f7 [2023-11-21 18:41:46,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:41:46,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:41:46,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:41:46,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:41:46,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:41:46,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:41:46" (1/1) ... [2023-11-21 18:41:46,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d03cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:46, skipping insertion in model container [2023-11-21 18:41:46,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:41:46" (1/1) ... [2023-11-21 18:41:46,419 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:41:46,973 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:41:47,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:41:47,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:41:47,665 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:41:47,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:41:47,848 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:47,848 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:47,849 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:47,849 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:47,849 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:47,849 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:47,858 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:41:47,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47 WrapperNode [2023-11-21 18:41:47,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:41:47,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:41:47,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:41:47,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:41:47,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,922 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-11-21 18:41:47,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:41:47,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:41:47,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:41:47,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:41:47,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,958 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:41:47,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:41:47,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:41:47,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:41:47,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:47" (1/1) ... [2023-11-21 18:41:47,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:41:47,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:41:47,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:41:48,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:41:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:41:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:41:48,037 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:41:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:41:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 18:41:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:41:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:41:48,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:41:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:41:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:41:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:41:48,186 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:41:48,188 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:41:48,343 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:41:48,425 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:41:48,435 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:41:48,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:41:48 BoogieIcfgContainer [2023-11-21 18:41:48,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:41:48,438 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:41:48,439 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:41:48,452 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:41:48,452 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:41:48" (1/1) ... [2023-11-21 18:41:48,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:41:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:41:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-21 18:41:48,523 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-21 18:41:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:41:48,528 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:41:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:41:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:41:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:41:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:41:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 21 transitions. [2023-11-21 18:41:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-21 18:41:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 18:41:48,965 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:41:48,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:41:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:41:49,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:41:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:41:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:41:49,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:41:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:41:49,157 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-21 18:41:49,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:41:49 ImpRootNode [2023-11-21 18:41:49,187 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:41:49,187 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:41:49,188 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:41:49,188 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:41:49,188 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:41:48" (3/4) ... [2023-11-21 18:41:49,191 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:41:49,192 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:41:49,193 INFO L158 Benchmark]: Toolchain (without parser) took 2868.89ms. Allocated memory is still 182.5MB. Free memory was 147.8MB in the beginning and 122.5MB in the end (delta: 25.3MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2023-11-21 18:41:49,193 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:41:49,194 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1532.18ms. Allocated memory is still 182.5MB. Free memory was 147.8MB in the beginning and 87.7MB in the end (delta: 60.1MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2023-11-21 18:41:49,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.15ms. Allocated memory is still 182.5MB. Free memory was 87.7MB in the beginning and 84.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:41:49,195 INFO L158 Benchmark]: Boogie Preprocessor took 35.26ms. Allocated memory is still 182.5MB. Free memory was 84.6MB in the beginning and 83.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:41:49,196 INFO L158 Benchmark]: RCFGBuilder took 477.08ms. Allocated memory is still 182.5MB. Free memory was 83.0MB in the beginning and 147.7MB in the end (delta: -64.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:41:49,197 INFO L158 Benchmark]: CodeCheck took 748.36ms. Allocated memory is still 182.5MB. Free memory was 147.7MB in the beginning and 122.6MB in the end (delta: 25.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-21 18:41:49,197 INFO L158 Benchmark]: Witness Printer took 4.52ms. Allocated memory is still 182.5MB. Free memory was 122.6MB in the beginning and 122.5MB in the end (delta: 142.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:41:49,201 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 15 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s 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={13:29}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_14_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE globalFive==5 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE globalFive==5 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] data - 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 0.34ms. Allocated memory is still 130.0MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1532.18ms. Allocated memory is still 182.5MB. Free memory was 147.8MB in the beginning and 87.7MB in the end (delta: 60.1MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.15ms. Allocated memory is still 182.5MB. Free memory was 87.7MB in the beginning and 84.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.26ms. Allocated memory is still 182.5MB. Free memory was 84.6MB in the beginning and 83.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 477.08ms. Allocated memory is still 182.5MB. Free memory was 83.0MB in the beginning and 147.7MB in the end (delta: -64.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 748.36ms. Allocated memory is still 182.5MB. Free memory was 147.7MB in the beginning and 122.6MB in the end (delta: 25.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.52ms. Allocated memory is still 182.5MB. Free memory was 122.6MB in the beginning and 122.5MB in the end (delta: 142.8kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:41:49,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/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_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/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_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/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_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/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 c1505671f45043d55fae334a2421f20d581bbaa5dda6423d580cd8cb1c356e93 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:41:51,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:41:52,046 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-21 18:41:52,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:41:52,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:41:52,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:41:52,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:41:52,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:41:52,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:41:52,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:41:52,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:41:52,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:41:52,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:41:52,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:41:52,102 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:41:52,102 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:41:52,103 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:41:52,103 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:41:52,104 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:41:52,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:41:52,104 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:41:52,106 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:41:52,106 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:41:52,107 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:41:52,107 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:41:52,107 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-21 18:41:52,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:41:52,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:41:52,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:41:52,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:41:52,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:41:52,111 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:41:52,111 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:41:52,112 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:41:52,112 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-21 18:41:52,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:41:52,113 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_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1505671f45043d55fae334a2421f20d581bbaa5dda6423d580cd8cb1c356e93 [2023-11-21 18:41:52,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:41:52,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:41:52,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:41:52,617 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:41:52,618 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:41:52,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i [2023-11-21 18:41:55,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:41:56,136 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:41:56,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_14_bad.i [2023-11-21 18:41:56,177 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/data/d846649e0/7785e625cd87449a842ac2e588f8b0b6/FLAGb40b63048 [2023-11-21 18:41:56,195 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/data/d846649e0/7785e625cd87449a842ac2e588f8b0b6 [2023-11-21 18:41:56,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:41:56,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:41:56,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:41:56,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:41:56,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:41:56,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:41:56" (1/1) ... [2023-11-21 18:41:56,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360dbd24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:56, skipping insertion in model container [2023-11-21 18:41:56,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:41:56" (1/1) ... [2023-11-21 18:41:56,314 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:41:56,823 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:41:57,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:41:57,452 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:41:57,475 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:41:57,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:41:57,678 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:57,679 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:57,679 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:57,679 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:57,679 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:57,679 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:41:57,685 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:41:57,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57 WrapperNode [2023-11-21 18:41:57,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:41:57,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:41:57,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:41:57,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:41:57,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,728 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,755 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2023-11-21 18:41:57,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:41:57,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:41:57,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:41:57,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:41:57,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,783 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:41:57,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:41:57,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:41:57,797 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:41:57,798 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:41:57" (1/1) ... [2023-11-21 18:41:57,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:41:57,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:41:57,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:41:57,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:41:57,904 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:41:57,904 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:41:57,904 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:41:57,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:41:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:41:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:41:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:41:57,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:41:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:41:57,905 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:41:57,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 18:41:58,156 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:41:58,159 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:41:58,336 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:41:58,382 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:41:58,382 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:41:58,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:41:58 BoogieIcfgContainer [2023-11-21 18:41:58,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:41:58,385 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:41:58,385 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:41:58,401 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:41:58,402 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:41:58" (1/1) ... [2023-11-21 18:41:58,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:41:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:41:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-21 18:41:58,519 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-21 18:41:58,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:41:58,524 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:41:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:41:58,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:41:58,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:41:58,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-21 18:41:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:41:58,705 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-21 18:41:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:41:58,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 18:41:58,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 18:41:58,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:41:58,807 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-21 18:41:58,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-21 18:41:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:41:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 20 states and 26 transitions. [2023-11-21 18:41:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-11-21 18:41:58,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 18:41:58,894 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:41:58,894 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:41:58,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:41:58,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:41:58,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-21 18:41:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:41:59,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:41:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:41:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:41:59,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:41:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:41:59,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-21 18:41:59,375 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-21 18:41:59,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:41:59 ImpRootNode [2023-11-21 18:41:59,419 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:41:59,420 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:41:59,420 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:41:59,420 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:41:59,421 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:41:58" (3/4) ... [2023-11-21 18:41:59,423 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:41:59,424 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:41:59,426 INFO L158 Benchmark]: Toolchain (without parser) took 3222.29ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 49.4MB in the beginning and 54.4MB in the end (delta: -4.9MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2023-11-21 18:41:59,426 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 77.6MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:41:59,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1479.58ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 49.4MB in the beginning and 70.1MB in the end (delta: -20.6MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2023-11-21 18:41:59,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.01ms. Allocated memory is still 109.1MB. Free memory was 70.1MB in the beginning and 67.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:41:59,429 INFO L158 Benchmark]: Boogie Preprocessor took 38.76ms. Allocated memory is still 109.1MB. Free memory was 67.0MB in the beginning and 64.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:41:59,435 INFO L158 Benchmark]: RCFGBuilder took 587.70ms. Allocated memory is still 109.1MB. Free memory was 64.9MB in the beginning and 47.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:41:59,435 INFO L158 Benchmark]: CodeCheck took 1034.34ms. Allocated memory is still 109.1MB. Free memory was 47.5MB in the beginning and 54.4MB in the end (delta: -6.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:41:59,436 INFO L158 Benchmark]: Witness Printer took 4.34ms. Allocated memory is still 109.1MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:41:59,446 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: 0.9s, 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_14_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE globalFive==5 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE globalFive==5 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] data - 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 0.68ms. Allocated memory is still 77.6MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1479.58ms. Allocated memory was 77.6MB in the beginning and 109.1MB in the end (delta: 31.5MB). Free memory was 49.4MB in the beginning and 70.1MB in the end (delta: -20.6MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.01ms. Allocated memory is still 109.1MB. Free memory was 70.1MB in the beginning and 67.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.76ms. Allocated memory is still 109.1MB. Free memory was 67.0MB in the beginning and 64.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 587.70ms. Allocated memory is still 109.1MB. Free memory was 64.9MB in the beginning and 47.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1034.34ms. Allocated memory is still 109.1MB. Free memory was 47.5MB in the beginning and 54.4MB in the end (delta: -6.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.34ms. Allocated memory is still 109.1MB. Free memory is still 54.4MB. 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 18:41:59,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d272cff-0c46-4b2f-b1cb-aaa8bbc8cf92/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