./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL --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 e8c0cfa0fb91b59031a8c1f70c6ff92f5ba177c5964138b023e50d9499587c32 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:57:21,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:57:21,185 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 03:57:21,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:57:21,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:57:21,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:57:21,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:57:21,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:57:21,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:57:21,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:57:21,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:57:21,241 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:57:21,242 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:57:21,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:57:21,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:57:21,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:57:21,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:57:21,245 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:57:21,246 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:57:21,246 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:57:21,247 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:57:21,247 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:57:21,248 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:57:21,248 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:57:21,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:57:21,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:57:21,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:57:21,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:57:21,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:57:21,252 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:57:21,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:57:21,253 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:57:21,254 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_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8c0cfa0fb91b59031a8c1f70c6ff92f5ba177c5964138b023e50d9499587c32 [2023-11-19 03:57:21,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:57:21,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:57:21,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:57:21,600 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:57:21,600 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:57:21,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i [2023-11-19 03:57:24,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:57:25,083 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:57:25,084 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i [2023-11-19 03:57:25,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/data/21c906cc9/00f446939eec480bb26e9931382c2806/FLAG2f52ca8e4 [2023-11-19 03:57:25,135 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/data/21c906cc9/00f446939eec480bb26e9931382c2806 [2023-11-19 03:57:25,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:57:25,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:57:25,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:57:25,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:57:25,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:57:25,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:57:25" (1/1) ... [2023-11-19 03:57:25,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205038cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:25, skipping insertion in model container [2023-11-19 03:57:25,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:57:25" (1/1) ... [2023-11-19 03:57:25,245 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:57:25,696 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:57:26,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:57:26,400 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:57:26,436 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:57:26,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:57:26,643 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:26,643 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:26,643 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:26,643 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:26,644 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:26,644 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:26,652 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:57:26,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26 WrapperNode [2023-11-19 03:57:26,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:57:26,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:57:26,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:57:26,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:57:26,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,716 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2023-11-19 03:57:26,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:57:26,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:57:26,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:57:26,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:57:26,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,765 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:57:26,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:57:26,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:57:26,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:57:26,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:26" (1/1) ... [2023-11-19 03:57:26,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:57:26,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:57:26,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:57:26,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:57:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:57:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:57:26,896 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:57:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:57:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 03:57:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:57:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:57:26,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:57:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:57:26,897 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:57:26,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:57:27,046 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:57:27,048 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:57:27,175 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:57:27,216 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:57:27,216 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 03:57:27,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:57:27 BoogieIcfgContainer [2023-11-19 03:57:27,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:57:27,222 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:57:27,222 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:57:27,236 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:57:27,236 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:57:27" (1/1) ... [2023-11-19 03:57:27,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:57:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:57:27,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-19 03:57:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-19 03:57:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:57:27,316 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:57:27,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:57:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:57:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:57:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:57:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2023-11-19 03:57:27,656 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-19 03:57:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:57:27,657 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:57:27,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:57:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:57:27,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:57:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:57:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:57:27,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:57:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:57:27,883 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-19 03:57:27,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:57:27 ImpRootNode [2023-11-19 03:57:27,937 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:57:27,938 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:57:27,938 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:57:27,938 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:57:27,939 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:57:27" (3/4) ... [2023-11-19 03:57:27,946 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:57:27,947 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:57:27,948 INFO L158 Benchmark]: Toolchain (without parser) took 2805.40ms. Allocated memory is still 119.5MB. Free memory was 73.9MB in the beginning and 49.7MB in the end (delta: 24.3MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2023-11-19 03:57:27,949 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:57:27,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1506.73ms. Allocated memory is still 119.5MB. Free memory was 73.7MB in the beginning and 49.7MB in the end (delta: 24.0MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2023-11-19 03:57:27,950 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.05ms. Allocated memory is still 119.5MB. Free memory was 49.7MB in the beginning and 46.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:57:27,952 INFO L158 Benchmark]: Boogie Preprocessor took 44.07ms. Allocated memory is still 119.5MB. Free memory was 46.7MB in the beginning and 45.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:57:27,953 INFO L158 Benchmark]: RCFGBuilder took 440.57ms. Allocated memory is still 119.5MB. Free memory was 45.0MB in the beginning and 72.9MB in the end (delta: -27.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-11-19 03:57:27,954 INFO L158 Benchmark]: CodeCheck took 714.93ms. Allocated memory is still 119.5MB. Free memory was 72.9MB in the beginning and 49.7MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 03:57:27,959 INFO L158 Benchmark]: Witness Printer took 9.46ms. Allocated memory is still 119.5MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:57:27,968 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, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 12 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 53 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1579] 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) [L1579] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={12:28}, argv={12:28}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL CWE191_Integer_Underflow__int_fgets_sub_16_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 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] [L1567] COND TRUE 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1506.73ms. Allocated memory is still 119.5MB. Free memory was 73.7MB in the beginning and 49.7MB in the end (delta: 24.0MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.05ms. Allocated memory is still 119.5MB. Free memory was 49.7MB in the beginning and 46.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.07ms. Allocated memory is still 119.5MB. Free memory was 46.7MB in the beginning and 45.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.57ms. Allocated memory is still 119.5MB. Free memory was 45.0MB in the beginning and 72.9MB in the end (delta: -27.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * CodeCheck took 714.93ms. Allocated memory is still 119.5MB. Free memory was 72.9MB in the beginning and 49.7MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 9.46ms. Allocated memory is still 119.5MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:57:28,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL --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 e8c0cfa0fb91b59031a8c1f70c6ff92f5ba177c5964138b023e50d9499587c32 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:57:30,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:57:31,063 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 03:57:31,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:57:31,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:57:31,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:57:31,101 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:57:31,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:57:31,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:57:31,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:57:31,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:57:31,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:57:31,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:57:31,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:57:31,107 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 03:57:31,108 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 03:57:31,108 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:57:31,109 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 03:57:31,110 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:57:31,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:57:31,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:57:31,112 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:57:31,112 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:57:31,113 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:57:31,113 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:57:31,114 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 03:57:31,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:57:31,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:57:31,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:57:31,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:57:31,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:57:31,117 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 03:57:31,118 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:57:31,119 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:57:31,119 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 03:57:31,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 03:57:31,120 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_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8c0cfa0fb91b59031a8c1f70c6ff92f5ba177c5964138b023e50d9499587c32 [2023-11-19 03:57:31,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:57:31,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:57:31,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:57:31,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:57:31,679 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:57:31,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i [2023-11-19 03:57:35,063 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:57:35,535 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:57:35,542 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_16_bad.i [2023-11-19 03:57:35,589 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/data/59e18c5f1/b23cc9a441bd44948c693cddc1924452/FLAGaed5e42de [2023-11-19 03:57:35,615 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/data/59e18c5f1/b23cc9a441bd44948c693cddc1924452 [2023-11-19 03:57:35,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:57:35,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:57:35,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:57:35,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:57:35,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:57:35,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:57:35" (1/1) ... [2023-11-19 03:57:35,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f1ec4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:35, skipping insertion in model container [2023-11-19 03:57:35,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:57:35" (1/1) ... [2023-11-19 03:57:35,730 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:57:36,269 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:57:36,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:57:36,911 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:57:36,935 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:57:37,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:57:37,165 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:37,165 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:37,166 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:37,166 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:37,166 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:37,166 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:37,175 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:57:37,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37 WrapperNode [2023-11-19 03:57:37,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:57:37,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:57:37,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:57:37,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:57:37,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,270 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-11-19 03:57:37,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:57:37,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:57:37,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:57:37,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:57:37,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:57:37,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:57:37,319 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:57:37,319 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:57:37,320 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:57:37,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:57:37,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:57:37,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:57:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:57:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:57:37,424 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:57:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:57:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 03:57:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:57:37,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:57:37,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:57:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:57:37,426 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:57:37,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 03:57:37,618 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:57:37,620 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:57:37,775 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:57:37,829 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:57:37,829 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 03:57:37,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:57:37 BoogieIcfgContainer [2023-11-19 03:57:37,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:57:37,835 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:57:37,836 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:57:37,848 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:57:37,848 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:57:37" (1/1) ... [2023-11-19 03:57:37,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:57:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:57:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-19 03:57:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-19 03:57:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:57:37,948 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:57:37,949 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:57:37,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:57:37,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:57:37,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 03:57:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:57:38,192 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-19 03:57:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:57:38,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 03:57:38,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:57:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:57:38,286 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-19 03:57:38,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-19 03:57:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:57:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2023-11-19 03:57:38,342 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-19 03:57:38,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:57:38,344 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:57:38,344 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:57:38,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:57:38,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:57:38,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-19 03:57:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:57:38,576 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:57:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:57:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:57:38,838 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:57:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:57:38,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-19 03:57:38,957 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-19 03:57:39,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:57:39 ImpRootNode [2023-11-19 03:57:39,012 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:57:39,013 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:57:39,013 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:57:39,014 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:57:39,014 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:57:37" (3/4) ... [2023-11-19 03:57:39,017 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:57:39,019 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:57:39,020 INFO L158 Benchmark]: Toolchain (without parser) took 3394.41ms. Allocated memory was 60.8MB in the beginning and 94.4MB in the end (delta: 33.6MB). Free memory was 33.6MB in the beginning and 44.8MB in the end (delta: -11.2MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2023-11-19 03:57:39,021 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 60.8MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:57:39,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1545.41ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 33.3MB in the beginning and 36.2MB in the end (delta: -2.9MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2023-11-19 03:57:39,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.86ms. Allocated memory is still 77.6MB. Free memory was 36.2MB in the beginning and 33.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 03:57:39,025 INFO L158 Benchmark]: Boogie Preprocessor took 45.69ms. Allocated memory is still 77.6MB. Free memory was 33.3MB in the beginning and 31.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:57:39,032 INFO L158 Benchmark]: RCFGBuilder took 516.16ms. Allocated memory is still 77.6MB. Free memory was 30.8MB in the beginning and 34.2MB in the end (delta: -3.4MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2023-11-19 03:57:39,034 INFO L158 Benchmark]: CodeCheck took 1177.02ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 34.2MB in the beginning and 45.2MB in the end (delta: -11.0MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-11-19 03:57:39,035 INFO L158 Benchmark]: Witness Printer took 5.73ms. Allocated memory is still 94.4MB. Free memory was 45.2MB in the beginning and 44.8MB in the end (delta: 464.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:57:39,046 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 12 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 44 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1579] 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) [L1579] 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}, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL CWE191_Integer_Underflow__int_fgets_sub_16_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 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] [L1567] COND TRUE 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87ms. Allocated memory is still 60.8MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1545.41ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 33.3MB in the beginning and 36.2MB in the end (delta: -2.9MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.86ms. Allocated memory is still 77.6MB. Free memory was 36.2MB in the beginning and 33.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.69ms. Allocated memory is still 77.6MB. Free memory was 33.3MB in the beginning and 31.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 516.16ms. Allocated memory is still 77.6MB. Free memory was 30.8MB in the beginning and 34.2MB in the end (delta: -3.4MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * CodeCheck took 1177.02ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 34.2MB in the beginning and 45.2MB in the end (delta: -11.0MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Witness Printer took 5.73ms. Allocated memory is still 94.4MB. Free memory was 45.2MB in the beginning and 44.8MB in the end (delta: 464.8kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:57:39,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcbf7a28-c8cd-48b9-923a-4aecf170b027/bin/ukojak-verify-G8NBE6pJGL/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