./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_02_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi --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 b43468da60ff5fce2aa9e5ce5cae0002bb858d701a95629c3b5ac51615f774f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:56:16,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:56:16,392 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-24 22:56:16,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:56:16,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 22:56:16,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:56:16,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:56:16,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 22:56:16,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:56:16,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:56:16,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:56:16,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:56:16,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:56:16,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:56:16,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:56:16,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:56:16,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:56:16,458 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 22:56:16,458 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:56:16,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:56:16,459 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:56:16,460 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:56:16,461 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:56:16,461 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:56:16,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:56:16,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:56:16,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:56:16,463 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:56:16,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:56:16,464 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 22:56:16,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:56:16,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:56:16,466 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_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b43468da60ff5fce2aa9e5ce5cae0002bb858d701a95629c3b5ac51615f774f7 [2023-11-24 22:56:16,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:56:16,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:56:16,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:56:16,777 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:56:16,778 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:56:16,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_02_bad.i [2023-11-24 22:56:19,834 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:56:20,223 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:56:20,224 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_02_bad.i [2023-11-24 22:56:20,252 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/data/f92d12969/d7ceaeab296544f98292e4054ff536ed/FLAG8ab434df9 [2023-11-24 22:56:20,268 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/data/f92d12969/d7ceaeab296544f98292e4054ff536ed [2023-11-24 22:56:20,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:56:20,273 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:56:20,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:56:20,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:56:20,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:56:20,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:56:20" (1/1) ... [2023-11-24 22:56:20,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a75b237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:20, skipping insertion in model container [2023-11-24 22:56:20,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:56:20" (1/1) ... [2023-11-24 22:56:20,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:56:21,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:56:21,409 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:56:21,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:56:21,836 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:21,836 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:21,836 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:21,837 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:21,837 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:21,848 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:56:21,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21 WrapperNode [2023-11-24 22:56:21,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:56:21,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:56:21,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:56:21,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:56:21,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,929 INFO L138 Inliner]: procedures = 499, calls = 63, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2023-11-24 22:56:21,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:56:21,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:56:21,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:56:21,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:56:21,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,952 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:56:21,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:56:21,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:56:21,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:56:21,964 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:21" (1/1) ... [2023-11-24 22:56:21,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:56:21,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:56:22,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:56:22,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:56:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-24 22:56:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 22:56:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 22:56:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:56:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 22:56:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:56:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:56:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:56:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:56:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 22:56:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:56:22,205 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:56:22,208 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:56:22,335 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:56:22,379 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:56:22,379 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:56:22,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:22 BoogieIcfgContainer [2023-11-24 22:56:22,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:56:22,382 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:56:22,382 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:56:22,394 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:56:22,394 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:22" (1/1) ... [2023-11-24 22:56:22,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:56:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-24 22:56:22,463 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-24 22:56:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 22:56:22,469 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:22,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:56:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2023-11-24 22:56:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-24 22:56:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 22:56:22,745 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:22,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:22,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:56:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:22,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:56:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:23,031 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-24 22:56:23,058 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet103 [2023-11-24 22:56:23,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:56:23 ImpRootNode [2023-11-24 22:56:23,065 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:56:23,066 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:56:23,066 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:56:23,067 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:56:23,067 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:22" (3/4) ... [2023-11-24 22:56:23,070 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 22:56:23,071 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:56:23,073 INFO L158 Benchmark]: Toolchain (without parser) took 2799.93ms. Allocated memory was 136.3MB in the beginning and 188.7MB in the end (delta: 52.4MB). Free memory was 86.5MB in the beginning and 86.3MB in the end (delta: 197.4kB). Peak memory consumption was 54.7MB. Max. memory is 16.1GB. [2023-11-24 22:56:23,074 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:56:23,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1575.04ms. Allocated memory was 136.3MB in the beginning and 188.7MB in the end (delta: 52.4MB). Free memory was 86.2MB in the beginning and 129.0MB in the end (delta: -42.8MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2023-11-24 22:56:23,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.11ms. Allocated memory is still 188.7MB. Free memory was 129.0MB in the beginning and 126.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:23,076 INFO L158 Benchmark]: Boogie Preprocessor took 30.79ms. Allocated memory is still 188.7MB. Free memory was 126.1MB in the beginning and 125.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:23,077 INFO L158 Benchmark]: RCFGBuilder took 419.14ms. Allocated memory is still 188.7MB. Free memory was 125.0MB in the beginning and 109.3MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 22:56:23,078 INFO L158 Benchmark]: CodeCheck took 683.23ms. Allocated memory is still 188.7MB. Free memory was 109.3MB in the beginning and 86.3MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:23,079 INFO L158 Benchmark]: Witness Printer took 5.51ms. Allocated memory is still 188.7MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:56:23,083 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, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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, overapproximation of large string literal at line 1578. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1578] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={13:27}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_02_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] [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] [L1569] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1575.04ms. Allocated memory was 136.3MB in the beginning and 188.7MB in the end (delta: 52.4MB). Free memory was 86.2MB in the beginning and 129.0MB in the end (delta: -42.8MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.11ms. Allocated memory is still 188.7MB. Free memory was 129.0MB in the beginning and 126.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.79ms. Allocated memory is still 188.7MB. Free memory was 126.1MB in the beginning and 125.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 419.14ms. Allocated memory is still 188.7MB. Free memory was 125.0MB in the beginning and 109.3MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 683.23ms. Allocated memory is still 188.7MB. Free memory was 109.3MB in the beginning and 86.3MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.51ms. Allocated memory is still 188.7MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet103 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 22:56:23,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi --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 b43468da60ff5fce2aa9e5ce5cae0002bb858d701a95629c3b5ac51615f774f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:56:25,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:56:25,891 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-24 22:56:25,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:56:25,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:56:25,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 22:56:25,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:56:25,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:56:25,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:56:25,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:56:25,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:56:25,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:56:25,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:56:25,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:56:25,959 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:56:25,960 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 22:56:25,960 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 22:56:25,960 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 22:56:25,961 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:56:25,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:56:25,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:56:25,963 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:56:25,963 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:56:25,963 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:56:25,964 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 22:56:25,964 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-24 22:56:25,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:56:25,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:56:25,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:56:25,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:56:25,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:56:25,967 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 22:56:25,968 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 22:56:25,968 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:56:25,968 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-24 22:56:25,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:56:25,969 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_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b43468da60ff5fce2aa9e5ce5cae0002bb858d701a95629c3b5ac51615f774f7 [2023-11-24 22:56:26,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:56:26,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:56:26,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:56:26,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:56:26,387 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:56:26,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_02_bad.i [2023-11-24 22:56:29,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:56:29,937 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:56:29,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_02_bad.i [2023-11-24 22:56:29,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/data/47f8de8e2/45a1faa6af834ebb85d56301d4c42381/FLAGed4ec5090 [2023-11-24 22:56:29,996 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/data/47f8de8e2/45a1faa6af834ebb85d56301d4c42381 [2023-11-24 22:56:29,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:56:30,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:56:30,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:56:30,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:56:30,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:56:30,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:56:29" (1/1) ... [2023-11-24 22:56:30,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63450e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:30, skipping insertion in model container [2023-11-24 22:56:30,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:56:29" (1/1) ... [2023-11-24 22:56:30,076 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:56:31,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:56:31,233 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:56:31,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:56:31,533 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:31,533 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:31,533 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:31,534 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:31,534 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:31,542 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:56:31,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31 WrapperNode [2023-11-24 22:56:31,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:56:31,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:56:31,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:56:31,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:56:31,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,619 INFO L138 Inliner]: procedures = 504, calls = 63, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-11-24 22:56:31,619 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:56:31,620 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:56:31,620 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:56:31,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:56:31,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,678 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:56:31,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:56:31,679 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:56:31,679 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:56:31,680 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:31" (1/1) ... [2023-11-24 22:56:31,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:56:31,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:56:31,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:56:31,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:56:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-24 22:56:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 22:56:31,807 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 22:56:31,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:56:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 22:56:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:56:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:56:31,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:56:31,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:56:31,809 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 22:56:31,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-24 22:56:32,062 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:56:32,067 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:56:32,242 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:56:32,311 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:56:32,312 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:56:32,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:32 BoogieIcfgContainer [2023-11-24 22:56:32,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:56:32,316 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:56:32,316 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:56:32,327 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:56:32,327 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:32" (1/1) ... [2023-11-24 22:56:32,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:56:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-24 22:56:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-24 22:56:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 22:56:32,422 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:32,422 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 22:56:32,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 22:56:32,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 22:56:32,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-24 22:56:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:32,557 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-24 22:56:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:56:32,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 22:56:32,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:56:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:56:32,615 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-24 22:56:32,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-24 22:56:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2023-11-24 22:56:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-24 22:56:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 22:56:32,647 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:32,647 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 22:56:32,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 22:56:32,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 22:56:32,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-24 22:56:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:32,888 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:56:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:33,109 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:56:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:33,158 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2023-11-24 22:56:33,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-24 22:56:33,166 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-24 22:56:33,201 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet101 [2023-11-24 22:56:33,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:56:33 ImpRootNode [2023-11-24 22:56:33,209 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:56:33,209 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:56:33,209 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:56:33,210 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:56:33,210 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:32" (3/4) ... [2023-11-24 22:56:33,212 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 22:56:33,213 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:56:33,214 INFO L158 Benchmark]: Toolchain (without parser) took 3213.22ms. Allocated memory was 75.5MB in the beginning and 107.0MB in the end (delta: 31.5MB). Free memory was 47.0MB in the beginning and 66.4MB in the end (delta: -19.5MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2023-11-24 22:56:33,215 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 75.5MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:56:33,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1541.33ms. Allocated memory was 75.5MB in the beginning and 107.0MB in the end (delta: 31.5MB). Free memory was 46.7MB in the beginning and 55.2MB in the end (delta: -8.6MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:33,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.26ms. Allocated memory is still 107.0MB. Free memory was 55.2MB in the beginning and 52.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 22:56:33,219 INFO L158 Benchmark]: Boogie Preprocessor took 57.82ms. Allocated memory is still 107.0MB. Free memory was 52.5MB in the beginning and 50.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:33,224 INFO L158 Benchmark]: RCFGBuilder took 636.62ms. Allocated memory is still 107.0MB. Free memory was 50.4MB in the beginning and 62.9MB in the end (delta: -12.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:33,225 INFO L158 Benchmark]: CodeCheck took 892.95ms. Allocated memory is still 107.0MB. Free memory was 62.9MB in the beginning and 67.0MB in the end (delta: -4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:56:33,225 INFO L158 Benchmark]: Witness Printer took 4.00ms. Allocated memory is still 107.0MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:56:33,228 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: 0.8s, 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, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 1 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, overapproximation of large string literal at line 1578. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1578] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_02_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] [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] [L1569] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 75.5MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1541.33ms. Allocated memory was 75.5MB in the beginning and 107.0MB in the end (delta: 31.5MB). Free memory was 46.7MB in the beginning and 55.2MB in the end (delta: -8.6MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.26ms. Allocated memory is still 107.0MB. Free memory was 55.2MB in the beginning and 52.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.82ms. Allocated memory is still 107.0MB. Free memory was 52.5MB in the beginning and 50.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 636.62ms. Allocated memory is still 107.0MB. Free memory was 50.4MB in the beginning and 62.9MB in the end (delta: -12.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * CodeCheck took 892.95ms. Allocated memory is still 107.0MB. Free memory was 62.9MB in the beginning and 67.0MB in the end (delta: -4.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.00ms. Allocated memory is still 107.0MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet101 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 22:56:33,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8301706-9989-4fb1-bd60-803c9122ba09/bin/ukojak-verify-afCqCEvfdi/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