./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0f4b6cb66f44c03b39cb8a828719dfd55f406239a5a7c804e9d0078ffe53721a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:30:46,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:30:46,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:30:46,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:30:46,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:30:46,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:30:46,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:30:46,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:30:46,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:30:46,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:30:46,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:30:46,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:30:46,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:30:46,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:30:46,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:30:46,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:30:46,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:30:46,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:30:46,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:30:46,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:30:46,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:30:46,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:30:46,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:30:46,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:30:46,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:30:46,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:30:46,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:30:46,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:30:46,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:30:46,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:30:46,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:30:46,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:30:46,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:30:46,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:30:46,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:30:46,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:30:46,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:30:46,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:30:46,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:30:46,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:30:46,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:30:46,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 13:30:46,478 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:30:46,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:30:46,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:30:46,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:30:46,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:30:46,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:30:46,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:30:46,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:30:46,480 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:30:46,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:30:46,485 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:30:46,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:30:46,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:30:46,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:30:46,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:30:46,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:30:46,486 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 13:30:46,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:30:46,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:30:46,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:30:46,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:30:46,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:30:46,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:30:46,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:30:46,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:30:46,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:30:46,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:30:46,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:30:46,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:30:46,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:30:46,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:30:46,488 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:30:46,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:30:46,489 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:30:46,489 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4b6cb66f44c03b39cb8a828719dfd55f406239a5a7c804e9d0078ffe53721a [2022-12-13 13:30:46,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:30:46,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:30:46,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:30:46,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:30:46,707 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:30:46,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-12-13 13:30:49,241 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:30:49,498 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:30:49,498 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-12-13 13:30:49,511 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/data/5bf102beb/bc8fa8462c0f450b84db333fcfbfa118/FLAGf9ce5ed71 [2022-12-13 13:30:49,812 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/data/5bf102beb/bc8fa8462c0f450b84db333fcfbfa118 [2022-12-13 13:30:49,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:30:49,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:30:49,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:30:49,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:30:49,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:30:49,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:30:49" (1/1) ... [2022-12-13 13:30:49,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a20067c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:49, skipping insertion in model container [2022-12-13 13:30:49,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:30:49" (1/1) ... [2022-12-13 13:30:49,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:30:49,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:30:50,082 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:30:50,399 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:30:50,403 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:30:50,404 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:30:50,407 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:30:50,407 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:30:50,427 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:30:50,430 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:30:50,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:30:50,446 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:30:50,464 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:30:50,503 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:30:50,505 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:30:50,505 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:30:50,507 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:30:50,507 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:30:50,510 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:30:50,511 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:30:50,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:30:50,597 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:30:50,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50 WrapperNode [2022-12-13 13:30:50,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:30:50,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:30:50,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:30:50,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:30:50,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,650 INFO L138 Inliner]: procedures = 503, calls = 65, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 60 [2022-12-13 13:30:50,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:30:50,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:30:50,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:30:50,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:30:50,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,666 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:30:50,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:30:50,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:30:50,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:30:50,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (1/1) ... [2022-12-13 13:30:50,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:30:50,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:30:50,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:30:50,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:30:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 13:30:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 13:30:50,725 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 13:30:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:30:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 13:30:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:30:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:30:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:30:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:30:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 13:30:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:30:50,836 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:30:50,837 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:30:50,938 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:30:50,943 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:30:50,943 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:30:50,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:30:50 BoogieIcfgContainer [2022-12-13 13:30:50,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:30:50,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:30:50,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:30:50,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:30:50,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:30:49" (1/3) ... [2022-12-13 13:30:50,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8f355c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:30:50, skipping insertion in model container [2022-12-13 13:30:50,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:50" (2/3) ... [2022-12-13 13:30:50,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8f355c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:30:50, skipping insertion in model container [2022-12-13 13:30:50,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:30:50" (3/3) ... [2022-12-13 13:30:50,951 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-12-13 13:30:50,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:30:50,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 13:30:51,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:30:51,013 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fc11b7e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:30:51,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 13:30:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 13:30:51,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 13:30:51,023 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:30:51,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:30:51,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 13:30:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:30:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash 290656206, now seen corresponding path program 1 times [2022-12-13 13:30:51,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:30:51,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304887946] [2022-12-13 13:30:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:30:51,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:30:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:30:51,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:30:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:30:51,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:30:51,167 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:30:51,168 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 13:30:51,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 13:30:51,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:30:51,173 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 13:30:51,177 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:30:51,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:30:51 BoogieIcfgContainer [2022-12-13 13:30:51,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:30:51,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:30:51,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:30:51,194 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:30:51,194 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:30:50" (3/4) ... [2022-12-13 13:30:51,197 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:30:51,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:30:51,198 INFO L158 Benchmark]: Toolchain (without parser) took 1383.49ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 113.2MB in the beginning and 122.0MB in the end (delta: -8.8MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2022-12-13 13:30:51,198 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 116.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:30:51,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 783.29ms. Allocated memory is still 151.0MB. Free memory was 112.7MB in the beginning and 116.5MB in the end (delta: -3.8MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2022-12-13 13:30:51,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.56ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 116.5MB in the beginning and 154.5MB in the end (delta: -38.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2022-12-13 13:30:51,200 INFO L158 Benchmark]: Boogie Preprocessor took 17.95ms. Allocated memory is still 188.7MB. Free memory was 154.5MB in the beginning and 153.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:30:51,200 INFO L158 Benchmark]: RCFGBuilder took 275.39ms. Allocated memory is still 188.7MB. Free memory was 153.4MB in the beginning and 139.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 13:30:51,200 INFO L158 Benchmark]: TraceAbstraction took 246.76ms. Allocated memory is still 188.7MB. Free memory was 139.8MB in the beginning and 123.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 13:30:51,201 INFO L158 Benchmark]: Witness Printer took 3.32ms. Allocated memory is still 188.7MB. Free memory was 123.0MB in the beginning and 122.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:30:51,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 116.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 783.29ms. Allocated memory is still 151.0MB. Free memory was 112.7MB in the beginning and 116.5MB in the end (delta: -3.8MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.56ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 116.5MB in the beginning and 154.5MB in the end (delta: -38.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.95ms. Allocated memory is still 188.7MB. Free memory was 154.5MB in the beginning and 153.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 275.39ms. Allocated memory is still 188.7MB. Free memory was 153.4MB in the beginning and 139.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 246.76ms. Allocated memory is still 188.7MB. Free memory was 139.8MB in the beginning and 123.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.32ms. Allocated memory is still 188.7MB. Free memory was 123.0MB in the beginning and 122.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, argv={1073741826:1073741831}, argv={1073741826:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_53_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_53b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_53c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_postdec_53d_badSink(data) [L1587] data-- VAL [\old(data)=-2147483648, data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:30:51,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0f4b6cb66f44c03b39cb8a828719dfd55f406239a5a7c804e9d0078ffe53721a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:30:52,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:30:52,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:30:52,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:30:52,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:30:52,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:30:52,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:30:52,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:30:52,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:30:52,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:30:52,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:30:52,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:30:52,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:30:52,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:30:52,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:30:52,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:30:52,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:30:52,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:30:52,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:30:52,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:30:52,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:30:52,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:30:52,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:30:52,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:30:52,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:30:52,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:30:52,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:30:52,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:30:52,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:30:52,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:30:52,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:30:52,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:30:52,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:30:52,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:30:52,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:30:52,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:30:52,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:30:52,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:30:52,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:30:52,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:30:52,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:30:52,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 13:30:52,978 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:30:52,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:30:52,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:30:52,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:30:52,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:30:52,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:30:52,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:30:52,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:30:52,980 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:30:52,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:30:52,980 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:30:52,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:30:52,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:30:52,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:30:52,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:30:52,980 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:30:52,981 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 13:30:52,981 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 13:30:52,981 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 13:30:52,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:30:52,981 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:30:52,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:30:52,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:30:52,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:30:52,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:30:52,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:30:52,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:30:52,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:30:52,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:30:52,982 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 13:30:52,982 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 13:30:52,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:30:52,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:30:52,982 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:30:52,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:30:52,982 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 13:30:52,982 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:30:52,983 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4b6cb66f44c03b39cb8a828719dfd55f406239a5a7c804e9d0078ffe53721a [2022-12-13 13:30:53,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:30:53,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:30:53,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:30:53,201 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:30:53,202 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:30:53,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-12-13 13:30:55,767 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:30:56,025 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:30:56,026 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-12-13 13:30:56,045 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/data/a7c340c85/c7c8af49f042473f899eaa4764620ed7/FLAGbb59d9108 [2022-12-13 13:30:56,059 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/data/a7c340c85/c7c8af49f042473f899eaa4764620ed7 [2022-12-13 13:30:56,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:30:56,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:30:56,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:30:56,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:30:56,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:30:56,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:56,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363ac4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56, skipping insertion in model container [2022-12-13 13:30:56,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:56,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:30:56,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:30:56,391 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:30:56,738 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:30:56,742 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:30:56,743 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:30:56,745 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:30:56,745 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:30:56,762 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:30:56,764 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:30:56,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:30:56,780 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:30:56,809 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:30:56,861 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:30:56,862 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:30:56,863 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:30:56,865 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:30:56,866 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:30:56,869 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:30:56,871 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:30:56,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:30:56,966 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:30:56,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56 WrapperNode [2022-12-13 13:30:56,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:30:56,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:30:56,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:30:56,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:30:56,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:56,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:57,015 INFO L138 Inliner]: procedures = 508, calls = 65, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 59 [2022-12-13 13:30:57,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:30:57,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:30:57,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:30:57,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:30:57,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:57,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:57,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:57,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:57,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:57,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:57,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:57,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:57,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:30:57,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:30:57,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:30:57,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:30:57,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (1/1) ... [2022-12-13 13:30:57,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:30:57,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:30:57,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:30:57,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:30:57,097 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 13:30:57,097 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 13:30:57,097 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 13:30:57,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:30:57,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 13:30:57,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:30:57,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:30:57,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:30:57,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:30:57,098 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 13:30:57,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 13:30:57,221 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:30:57,222 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:30:57,340 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:30:57,345 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:30:57,345 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:30:57,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:30:57 BoogieIcfgContainer [2022-12-13 13:30:57,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:30:57,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:30:57,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:30:57,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:30:57,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:30:56" (1/3) ... [2022-12-13 13:30:57,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cefd1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:30:57, skipping insertion in model container [2022-12-13 13:30:57,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:30:56" (2/3) ... [2022-12-13 13:30:57,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cefd1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:30:57, skipping insertion in model container [2022-12-13 13:30:57,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:30:57" (3/3) ... [2022-12-13 13:30:57,352 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_53_bad.i [2022-12-13 13:30:57,365 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:30:57,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 13:30:57,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:30:57,403 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d57e879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:30:57,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 13:30:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 13:30:57,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 13:30:57,412 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:30:57,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:30:57,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 13:30:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:30:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 290656206, now seen corresponding path program 1 times [2022-12-13 13:30:57,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:30:57,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320779358] [2022-12-13 13:30:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:30:57,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:30:57,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:30:57,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:30:57,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 13:30:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:30:57,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:30:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:30:57,618 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 13:30:57,620 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:30:57,621 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 13:30:57,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 13:30:57,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:30:57,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:30:57,828 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 13:30:57,832 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:30:57,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:30:57 BoogieIcfgContainer [2022-12-13 13:30:57,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:30:57,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:30:57,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:30:57,861 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:30:57,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:30:57" (3/4) ... [2022-12-13 13:30:57,864 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:30:57,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:30:57,865 INFO L158 Benchmark]: Toolchain (without parser) took 1802.19ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 79.6MB in the beginning and 97.8MB in the end (delta: -18.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2022-12-13 13:30:57,865 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory is still 30.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:30:57,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 902.96ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 73.7MB in the end (delta: 5.6MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2022-12-13 13:30:57,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.54ms. Allocated memory is still 104.9MB. Free memory was 73.7MB in the beginning and 70.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:30:57,866 INFO L158 Benchmark]: Boogie Preprocessor took 20.56ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 68.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:30:57,866 INFO L158 Benchmark]: RCFGBuilder took 309.37ms. Allocated memory is still 104.9MB. Free memory was 68.6MB in the beginning and 53.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 13:30:57,867 INFO L158 Benchmark]: TraceAbstraction took 511.84ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 53.3MB in the beginning and 98.6MB in the end (delta: -45.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:30:57,867 INFO L158 Benchmark]: Witness Printer took 3.65ms. Allocated memory is still 134.2MB. Free memory was 98.6MB in the beginning and 97.8MB in the end (delta: 823.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:30:57,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory is still 30.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 902.96ms. Allocated memory is still 104.9MB. Free memory was 79.3MB in the beginning and 73.7MB in the end (delta: 5.6MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.54ms. Allocated memory is still 104.9MB. Free memory was 73.7MB in the beginning and 70.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.56ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 68.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 309.37ms. Allocated memory is still 104.9MB. Free memory was 68.6MB in the beginning and 53.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 511.84ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 53.3MB in the beginning and 98.6MB in the end (delta: -45.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.65ms. Allocated memory is still 134.2MB. Free memory was 98.6MB in the beginning and 97.8MB in the end (delta: 823.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_53_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_53b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_53c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_postdec_53d_badSink(data) [L1587] data-- VAL [\old(data)=-2147483648, data=-2147483648, data--=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:30:57,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a26401-df11-44a6-ad50-cf346aa1b945/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample