./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_52_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 23dfb1860d3db11a4bf55a5abb2f67cfdd70d96e626f49ec0817ac74bf6afc3f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:03:52,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:03:52,856 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:03:52,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:03:52,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:03:52,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:03:52,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:03:52,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:03:52,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:03:52,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:03:52,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:03:52,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:03:52,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:03:52,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:03:52,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:03:52,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:03:52,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:03:52,928 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:03:52,928 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:03:52,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:03:52,929 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:03:52,930 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:03:52,931 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:03:52,931 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:03:52,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:03:52,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:03:52,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:03:52,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:03:52,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:03:52,935 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:03:52,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:03:52,936 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:03:52,936 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_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23dfb1860d3db11a4bf55a5abb2f67cfdd70d96e626f49ec0817ac74bf6afc3f [2023-11-23 20:03:53,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:03:53,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:03:53,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:03:53,260 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:03:53,261 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:03:53,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_52_bad.i [2023-11-23 20:03:56,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:03:57,390 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:03:57,398 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_52_bad.i [2023-11-23 20:03:57,441 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/data/20f0dba27/c43d4d5ec52a41b994b3a4e21d0ada7f/FLAGfe239bdd5 [2023-11-23 20:03:57,462 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/data/20f0dba27/c43d4d5ec52a41b994b3a4e21d0ada7f [2023-11-23 20:03:57,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:03:57,467 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:03:57,469 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:03:57,469 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:03:57,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:03:57,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:03:57" (1/1) ... [2023-11-23 20:03:57,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d43b4b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:57, skipping insertion in model container [2023-11-23 20:03:57,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:03:57" (1/1) ... [2023-11-23 20:03:57,571 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:03:58,015 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:03:58,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:03:58,790 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:03:58,835 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:03:58,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:03:59,158 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:59,158 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:59,159 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:59,159 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:59,159 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:59,159 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:59,169 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:03:59,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59 WrapperNode [2023-11-23 20:03:59,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:03:59,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:03:59,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:03:59,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:03:59,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,257 INFO L138 Inliner]: procedures = 502, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 58 [2023-11-23 20:03:59,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:03:59,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:03:59,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:03:59,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:03:59,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,285 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:03:59,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:03:59,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:03:59,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:03:59,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:03:59,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:03:59,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:03:59,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:03:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:03:59,409 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:03:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:03:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:03:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:03:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:03:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:03:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:03:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:03:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:03:59,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:03:59,603 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:03:59,606 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:03:59,788 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:03:59,837 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:03:59,837 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:03:59,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:03:59 BoogieIcfgContainer [2023-11-23 20:03:59,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:03:59,841 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:03:59,841 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:03:59,853 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:03:59,853 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:03:59" (1/1) ... [2023-11-23 20:03:59,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:03:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:03:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:03:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:03:59,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:03:59,932 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:03:59,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 20:04:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 20:04:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:04:00,582 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:00,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:04:00,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:04:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:04:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:04:00,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:04:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:04:00,755 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-23 20:04:00,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:04:00 ImpRootNode [2023-11-23 20:04:00,792 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:04:00,793 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:04:00,794 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:04:00,794 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:04:00,795 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:03:59" (3/4) ... [2023-11-23 20:04:00,797 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:04:00,799 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:04:00,800 INFO L158 Benchmark]: Toolchain (without parser) took 3332.83ms. Allocated memory was 121.6MB in the beginning and 161.5MB in the end (delta: 39.8MB). Free memory was 74.3MB in the beginning and 101.8MB in the end (delta: -27.5MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2023-11-23 20:04:00,801 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 121.6MB. Free memory was 65.3MB in the beginning and 65.2MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:04:00,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1702.48ms. Allocated memory was 121.6MB in the beginning and 161.5MB in the end (delta: 39.8MB). Free memory was 73.9MB in the beginning and 81.8MB in the end (delta: -7.8MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2023-11-23 20:04:00,803 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.12ms. Allocated memory is still 161.5MB. Free memory was 81.8MB in the beginning and 78.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:04:00,803 INFO L158 Benchmark]: Boogie Preprocessor took 38.83ms. Allocated memory is still 161.5MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:04:00,804 INFO L158 Benchmark]: RCFGBuilder took 541.20ms. Allocated memory is still 161.5MB. Free memory was 77.3MB in the beginning and 62.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:04:00,805 INFO L158 Benchmark]: CodeCheck took 951.78ms. Allocated memory is still 161.5MB. Free memory was 62.6MB in the beginning and 101.8MB in the end (delta: -39.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:04:00,805 INFO L158 Benchmark]: Witness Printer took 5.52ms. Allocated memory is still 161.5MB. Free memory is still 101.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:04:00,810 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, 15 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, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 9 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 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, 0.4s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=13, argc=13, argv={12:28}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE190_Integer_Overflow__int_fgets_preinc_52_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE190_Integer_Overflow__int_fgets_preinc_52b_badSink(data) [L1577] CALL CWE190_Integer_Overflow__int_fgets_preinc_52c_badSink(data) [L1582] ++data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=2147483647, data=2147483647, 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 0.43ms. Allocated memory is still 121.6MB. Free memory was 65.3MB in the beginning and 65.2MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1702.48ms. Allocated memory was 121.6MB in the beginning and 161.5MB in the end (delta: 39.8MB). Free memory was 73.9MB in the beginning and 81.8MB in the end (delta: -7.8MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.12ms. Allocated memory is still 161.5MB. Free memory was 81.8MB in the beginning and 78.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.83ms. Allocated memory is still 161.5MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 541.20ms. Allocated memory is still 161.5MB. Free memory was 77.3MB in the beginning and 62.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 951.78ms. Allocated memory is still 161.5MB. Free memory was 62.6MB in the beginning and 101.8MB in the end (delta: -39.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.52ms. Allocated memory is still 161.5MB. Free memory is still 101.8MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:04:00,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with 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_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 23dfb1860d3db11a4bf55a5abb2f67cfdd70d96e626f49ec0817ac74bf6afc3f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:04:03,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:04:03,697 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:04:03,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:04:03,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:04:03,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:04:03,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:04:03,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:04:03,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:04:03,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:04:03,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:04:03,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:04:03,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:04:03,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:04:03,767 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:04:03,768 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:04:03,768 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:04:03,769 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:04:03,769 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:04:03,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:04:03,771 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:04:03,772 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:04:03,773 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:04:03,773 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:04:03,774 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:04:03,774 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:04:03,775 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:04:03,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:04:03,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:04:03,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:04:03,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:04:03,778 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:04:03,778 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:04:03,779 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:04:03,779 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:04:03,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:04:03,780 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_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23dfb1860d3db11a4bf55a5abb2f67cfdd70d96e626f49ec0817ac74bf6afc3f [2023-11-23 20:04:04,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:04:04,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:04:04,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:04:04,251 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:04:04,252 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:04:04,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_52_bad.i [2023-11-23 20:04:07,522 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:04:07,989 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:04:07,989 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_52_bad.i [2023-11-23 20:04:08,022 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/data/c84d217bf/c88df044591a451586b7415b2d9b34d7/FLAG4a5ba4695 [2023-11-23 20:04:08,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/data/c84d217bf/c88df044591a451586b7415b2d9b34d7 [2023-11-23 20:04:08,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:04:08,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:04:08,052 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:04:08,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:04:08,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:04:08,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7898ae25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:08, skipping insertion in model container [2023-11-23 20:04:08,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:08" (1/1) ... [2023-11-23 20:04:08,142 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:04:08,543 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:04:09,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:04:09,181 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:04:09,214 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:04:09,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:04:09,507 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:04:09,507 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:04:09,508 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:04:09,508 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:04:09,508 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:04:09,508 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:04:09,517 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:04:09,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09 WrapperNode [2023-11-23 20:04:09,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:04:09,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:04:09,520 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:04:09,520 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:04:09,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,589 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,621 INFO L138 Inliner]: procedures = 507, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 57 [2023-11-23 20:04:09,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:04:09,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:04:09,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:04:09,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:04:09,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:04:09,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:04:09,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:04:09,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:04:09,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:09" (1/1) ... [2023-11-23 20:04:09,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:04:09,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:04:09,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:04:09,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:04:09,770 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:04:09,770 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:04:09,770 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:04:09,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:04:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:04:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:04:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:04:09,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:04:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:04:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:04:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:04:09,945 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:04:09,948 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:04:10,085 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:04:10,149 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:04:10,149 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:04:10,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:10 BoogieIcfgContainer [2023-11-23 20:04:10,151 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:04:10,152 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:04:10,152 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:04:10,162 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:04:10,163 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:10" (1/1) ... [2023-11-23 20:04:10,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:04:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:04:10,232 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:04:10,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:04:10,237 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:10,237 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:04:10,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:04:10,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:04:10,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:04:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:10,470 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-23 20:04:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:10,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 20:04:10,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:10,561 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-23 20:04:10,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:04:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2023-11-23 20:04:10,595 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-11-23 20:04:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:04:10,596 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:10,596 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:04:10,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:04:10,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:04:10,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-23 20:04:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:04:10,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:04:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:04:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:04:11,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:04:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:04:11,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:04:11,132 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-23 20:04:11,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:04:11 ImpRootNode [2023-11-23 20:04:11,173 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:04:11,174 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:04:11,174 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:04:11,174 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:04:11,175 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:10" (3/4) ... [2023-11-23 20:04:11,177 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:04:11,178 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:04:11,179 INFO L158 Benchmark]: Toolchain (without parser) took 3130.27ms. Allocated memory is still 96.5MB. Free memory was 68.4MB in the beginning and 40.4MB in the end (delta: 28.0MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2023-11-23 20:04:11,180 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 71.3MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:04:11,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1466.28ms. Allocated memory is still 96.5MB. Free memory was 68.1MB in the beginning and 57.7MB in the end (delta: 10.4MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2023-11-23 20:04:11,182 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.67ms. Allocated memory is still 96.5MB. Free memory was 57.7MB in the beginning and 54.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:04:11,183 INFO L158 Benchmark]: Boogie Preprocessor took 37.50ms. Allocated memory is still 96.5MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:04:11,188 INFO L158 Benchmark]: RCFGBuilder took 490.08ms. Allocated memory is still 96.5MB. Free memory was 52.5MB in the beginning and 67.1MB in the end (delta: -14.5MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2023-11-23 20:04:11,189 INFO L158 Benchmark]: CodeCheck took 1021.80ms. Allocated memory is still 96.5MB. Free memory was 67.1MB in the beginning and 40.9MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 20:04:11,190 INFO L158 Benchmark]: Witness Printer took 4.70ms. Allocated memory is still 96.5MB. Free memory was 40.9MB in the beginning and 40.4MB in the end (delta: 565.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:04:11,201 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, 15 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, 22 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, 58 GetRequests, 58 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 65 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] 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] [L1570] CALL CWE190_Integer_Overflow__int_fgets_preinc_52_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE190_Integer_Overflow__int_fgets_preinc_52b_badSink(data) [L1577] CALL CWE190_Integer_Overflow__int_fgets_preinc_52c_badSink(data) [L1582] ++data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=2147483647, data=2147483647, 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 0.70ms. Allocated memory is still 71.3MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1466.28ms. Allocated memory is still 96.5MB. Free memory was 68.1MB in the beginning and 57.7MB in the end (delta: 10.4MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.67ms. Allocated memory is still 96.5MB. Free memory was 57.7MB in the beginning and 54.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.50ms. Allocated memory is still 96.5MB. Free memory was 54.6MB in the beginning and 52.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 490.08ms. Allocated memory is still 96.5MB. Free memory was 52.5MB in the beginning and 67.1MB in the end (delta: -14.5MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * CodeCheck took 1021.80ms. Allocated memory is still 96.5MB. Free memory was 67.1MB in the beginning and 40.9MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.70ms. Allocated memory is still 96.5MB. Free memory was 40.9MB in the beginning and 40.4MB in the end (delta: 565.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:04:11,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddb900a-054c-4d13-bacb-6a58a4facb6a/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample