./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_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_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/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_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/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_c60199ae-1992-4587-a429-f4c1e431d91e/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 6cc19415d2c506dfc0f3885e109faba292247adb3ee953669e2cd73af727a6cc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:13:56,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:13:56,636 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:13:56,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:13:56,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:13:56,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:13:56,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:13:56,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:13:56,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:13:56,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:13:56,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:13:56,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:13:56,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:13:56,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:13:56,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:13:56,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:13:56,679 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:13:56,680 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:13:56,680 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:13:56,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:13:56,681 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:13:56,684 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:13:56,684 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:13:56,685 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:13:56,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:13:56,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:13:56,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:13:56,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:13:56,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:13:56,687 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:13:56,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:13:56,689 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:13:56,689 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_c60199ae-1992-4587-a429-f4c1e431d91e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cc19415d2c506dfc0f3885e109faba292247adb3ee953669e2cd73af727a6cc [2023-11-23 20:13:56,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:13:57,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:13:57,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:13:57,023 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:13:57,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:13:57,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i [2023-11-23 20:14:00,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:14:00,703 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:14:00,704 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i [2023-11-23 20:14:00,731 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/data/6953474ad/5d9a074623b44cf8af924572ea4d1714/FLAG0638f17e9 [2023-11-23 20:14:00,744 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/data/6953474ad/5d9a074623b44cf8af924572ea4d1714 [2023-11-23 20:14:00,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:14:00,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:14:00,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:14:00,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:14:00,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:14:00,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:14:00" (1/1) ... [2023-11-23 20:14:00,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c9b478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:00, skipping insertion in model container [2023-11-23 20:14:00,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:14:00" (1/1) ... [2023-11-23 20:14:00,844 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:14:01,242 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:14:01,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:14:01,992 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:14:02,028 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:14:02,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:14:02,282 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:02,283 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:02,284 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:02,284 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:02,284 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:02,284 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:02,292 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:14:02,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02 WrapperNode [2023-11-23 20:14:02,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:14:02,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:14:02,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:14:02,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:14:02,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,358 INFO L138 Inliner]: procedures = 500, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2023-11-23 20:14:02,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:14:02,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:14:02,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:14:02,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:14:02,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:14:02,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:14:02,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:14:02,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:14:02,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:14:02,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:14:02,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:14:02,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:14:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:14:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:14:02,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:14:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:14:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:14:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:14:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:14:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:14:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:14:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:14:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:14:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:14:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:14:02,701 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:14:02,703 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:14:02,864 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:14:02,905 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:14:02,905 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:14:02,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:14:02 BoogieIcfgContainer [2023-11-23 20:14:02,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:14:02,908 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:14:02,909 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:14:02,919 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:14:02,920 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:14:02" (1/1) ... [2023-11-23 20:14:02,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:14:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:14:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:14:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:14:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:14:02,994 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:14:02,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:14:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:14:03,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:14:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:14:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:14:03,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:14:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:14:03,379 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:14:03,405 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post101 could not be translated [2023-11-23 20:14:03,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:14:03 ImpRootNode [2023-11-23 20:14:03,411 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:14:03,412 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:14:03,412 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:14:03,412 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:14:03,413 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:14:02" (3/4) ... [2023-11-23 20:14:03,415 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:14:03,416 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:14:03,417 INFO L158 Benchmark]: Toolchain (without parser) took 2668.32ms. Allocated memory is still 155.2MB. Free memory was 107.8MB in the beginning and 111.9MB in the end (delta: -4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:14:03,417 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:14:03,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1542.69ms. Allocated memory is still 155.2MB. Free memory was 107.8MB in the beginning and 92.0MB in the end (delta: 15.8MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2023-11-23 20:14:03,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.23ms. Allocated memory is still 155.2MB. Free memory was 92.0MB in the beginning and 89.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:14:03,420 INFO L158 Benchmark]: Boogie Preprocessor took 30.76ms. Allocated memory is still 155.2MB. Free memory was 89.2MB in the beginning and 87.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:14:03,420 INFO L158 Benchmark]: RCFGBuilder took 516.81ms. Allocated memory is still 155.2MB. Free memory was 87.8MB in the beginning and 72.4MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 20:14:03,421 INFO L158 Benchmark]: CodeCheck took 502.56ms. Allocated memory is still 155.2MB. Free memory was 72.4MB in the beginning and 111.9MB in the end (delta: -39.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:14:03,421 INFO L158 Benchmark]: Witness Printer took 4.51ms. Allocated memory is still 155.2MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:14:03,425 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: 0.4s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 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, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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); [L1582] 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) [L1582] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=45, argc=45, argv={44:46}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1583] CALL CWE191_Integer_Underflow__int_fgets_postdec_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_postdec_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={8407:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1542.69ms. Allocated memory is still 155.2MB. Free memory was 107.8MB in the beginning and 92.0MB in the end (delta: 15.8MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.23ms. Allocated memory is still 155.2MB. Free memory was 92.0MB in the beginning and 89.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.76ms. Allocated memory is still 155.2MB. Free memory was 89.2MB in the beginning and 87.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 516.81ms. Allocated memory is still 155.2MB. Free memory was 87.8MB in the beginning and 72.4MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 502.56ms. Allocated memory is still 155.2MB. Free memory was 72.4MB in the beginning and 111.9MB in the end (delta: -39.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.51ms. Allocated memory is still 155.2MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post101 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:14:03,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/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_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/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_c60199ae-1992-4587-a429-f4c1e431d91e/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 6cc19415d2c506dfc0f3885e109faba292247adb3ee953669e2cd73af727a6cc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:14:06,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:14:06,113 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:14:06,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:14:06,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:14:06,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:14:06,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:14:06,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:14:06,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:14:06,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:14:06,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:14:06,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:14:06,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:14:06,163 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:14:06,163 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:14:06,164 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:14:06,164 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:14:06,165 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:14:06,165 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:14:06,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:14:06,167 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:14:06,168 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:14:06,169 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:14:06,169 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:14:06,170 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:14:06,170 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:14:06,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:14:06,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:14:06,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:14:06,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:14:06,173 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:14:06,174 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:14:06,174 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:14:06,175 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:14:06,175 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:14:06,175 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:14:06,176 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_c60199ae-1992-4587-a429-f4c1e431d91e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cc19415d2c506dfc0f3885e109faba292247adb3ee953669e2cd73af727a6cc [2023-11-23 20:14:06,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:14:06,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:14:06,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:14:06,645 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:14:06,650 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:14:06,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i [2023-11-23 20:14:10,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:14:10,511 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:14:10,512 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i [2023-11-23 20:14:10,546 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/data/04d946ffe/dfba6b3c6a3f42d1b6b41d3d4ae9971d/FLAG235f34877 [2023-11-23 20:14:10,565 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/data/04d946ffe/dfba6b3c6a3f42d1b6b41d3d4ae9971d [2023-11-23 20:14:10,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:14:10,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:14:10,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:14:10,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:14:10,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:14:10,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:14:10" (1/1) ... [2023-11-23 20:14:10,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404b889a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:10, skipping insertion in model container [2023-11-23 20:14:10,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:14:10" (1/1) ... [2023-11-23 20:14:10,669 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:14:11,142 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:14:11,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:14:11,901 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:14:11,935 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:14:12,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:14:12,280 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:12,280 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:12,280 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:12,280 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:12,280 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:12,281 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:14:12,289 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:14:12,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12 WrapperNode [2023-11-23 20:14:12,289 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:14:12,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:14:12,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:14:12,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:14:12,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,411 INFO L138 Inliner]: procedures = 505, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-11-23 20:14:12,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:14:12,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:14:12,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:14:12,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:14:12,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:14:12,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:14:12,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:14:12,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:14:12,473 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:14:12,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:14:12,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:14:12,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:14:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:14:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:14:12,548 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:14:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:14:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:14:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:14:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:14:12,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:14:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 20:14:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:14:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 20:14:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:14:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:14:12,723 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:14:12,726 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:14:12,885 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:14:12,959 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:14:12,964 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:14:12,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:14:12 BoogieIcfgContainer [2023-11-23 20:14:12,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:14:12,967 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:14:12,968 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:14:12,977 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:14:12,977 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:14:12" (1/1) ... [2023-11-23 20:14:12,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:14:13,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:14:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:14:13,039 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:14:13,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:14:13,044 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:14:13,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:14:13,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:14:13,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:14:13,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:14:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:14:13,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:14:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:14:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:14:13,720 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:14:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:14:13,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:14:13,815 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:14:13,842 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post99 could not be translated [2023-11-23 20:14:13,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:14:13 ImpRootNode [2023-11-23 20:14:13,847 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:14:13,848 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:14:13,848 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:14:13,848 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:14:13,849 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:14:12" (3/4) ... [2023-11-23 20:14:13,851 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:14:13,852 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:14:13,853 INFO L158 Benchmark]: Toolchain (without parser) took 3280.03ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 41.6MB in the beginning and 52.0MB in the end (delta: -10.5MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2023-11-23 20:14:13,854 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 73.4MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:14:13,855 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1716.14ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 41.4MB in the beginning and 64.4MB in the end (delta: -23.0MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2023-11-23 20:14:13,855 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.60ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 61.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:14:13,856 INFO L158 Benchmark]: Boogie Preprocessor took 58.92ms. Allocated memory is still 100.7MB. Free memory was 61.3MB in the beginning and 59.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:14:13,857 INFO L158 Benchmark]: RCFGBuilder took 494.30ms. Allocated memory is still 100.7MB. Free memory was 59.2MB in the beginning and 71.4MB in the end (delta: -12.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 20:14:13,858 INFO L158 Benchmark]: CodeCheck took 879.95ms. Allocated memory is still 100.7MB. Free memory was 71.4MB in the beginning and 52.6MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:14:13,858 INFO L158 Benchmark]: Witness Printer took 4.47ms. Allocated memory is still 100.7MB. Free memory was 52.6MB in the beginning and 52.0MB in the end (delta: 560.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:14:13,862 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: 0.8s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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); [L1582] 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) [L1582] 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] [L1583] CALL CWE191_Integer_Underflow__int_fgets_postdec_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_postdec_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 73.4MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1716.14ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 41.4MB in the beginning and 64.4MB in the end (delta: -23.0MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.60ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 61.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.92ms. Allocated memory is still 100.7MB. Free memory was 61.3MB in the beginning and 59.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.30ms. Allocated memory is still 100.7MB. Free memory was 59.2MB in the beginning and 71.4MB in the end (delta: -12.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * CodeCheck took 879.95ms. Allocated memory is still 100.7MB. Free memory was 71.4MB in the beginning and 52.6MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.47ms. Allocated memory is still 100.7MB. Free memory was 52.6MB in the beginning and 52.0MB in the end (delta: 560.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post99 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:14:13,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60199ae-1992-4587-a429-f4c1e431d91e/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