./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_03_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_03_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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_695a9764-82d9-4f76-becf-2c75451355cd/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 72790c58224f12ce48b7763f6b5625a9cd07ad6e26dcf083ccd0ee5ef61318c8 --- 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 19:02:45,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:02:45,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:02:45,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:02:45,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:02:45,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:02:45,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:02:45,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:02:45,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:02:45,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:02:45,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:02:45,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:02:45,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:02:45,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:02:45,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:02:45,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:02:45,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:02:45,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:02:45,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:02:45,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:02:45,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:02:45,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:02:45,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:02:45,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:02:45,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:02:45,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:02:45,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:02:45,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:02:45,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:02:45,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:02:45,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:02:45,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:02:45,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:02:45,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:02:45,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:02:45,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:02:45,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:02:45,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:02:45,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:02:45,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:02:45,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:02:45,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 19:02:45,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:02:45,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:02:45,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:02:45,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:02:45,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:02:45,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:02:45,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:02:45,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:02:45,625 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:02:45,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:02:45,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:02:45,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:02:45,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:02:45,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:02:45,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:02:45,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:02:45,626 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:02:45,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:02:45,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:02:45,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:02:45,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:02:45,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:02:45,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:02:45,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:02:45,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:02:45,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:02:45,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:02:45,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:02:45,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:02:45,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:02:45,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:02:45,628 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:02:45,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:02:45,628 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:02:45,628 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_695a9764-82d9-4f76-becf-2c75451355cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72790c58224f12ce48b7763f6b5625a9cd07ad6e26dcf083ccd0ee5ef61318c8 [2022-12-13 19:02:45,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:02:45,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:02:45,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:02:45,819 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:02:45,819 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:02:45,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_03_bad.i [2022-12-13 19:02:48,344 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:02:48,612 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:02:48,613 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_03_bad.i [2022-12-13 19:02:48,629 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/data/6eece856b/415d0d0dc6844582b69d0df8656d8ad5/FLAGf049839c0 [2022-12-13 19:02:48,894 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/data/6eece856b/415d0d0dc6844582b69d0df8656d8ad5 [2022-12-13 19:02:48,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:02:48,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:02:48,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:02:48,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:02:48,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:02:48,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:02:48" (1/1) ... [2022-12-13 19:02:48,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627e9f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:48, skipping insertion in model container [2022-12-13 19:02:48,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:02:48" (1/1) ... [2022-12-13 19:02:48,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:02:48,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:02:49,168 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:02:49,455 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:02:49,459 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:02:49,461 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:02:49,463 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:02:49,463 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:02:49,480 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:02:49,484 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:02:49,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:02:49,493 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:02:49,509 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:02:49,540 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:02:49,541 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:02:49,542 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:02:49,544 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:02:49,544 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:02:49,547 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:02:49,548 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:02:49,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:02:49,662 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:02:49,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49 WrapperNode [2022-12-13 19:02:49,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:02:49,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:02:49,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:02:49,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:02:49,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,700 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-13 19:02:49,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:02:49,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:02:49,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:02:49,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:02:49,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,717 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:02:49,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:02:49,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:02:49,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:02:49,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (1/1) ... [2022-12-13 19:02:49,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:02:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:02:49,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:02:49,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:02:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 19:02:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 19:02:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 19:02:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:02:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 19:02:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:02:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:02:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:02:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:02:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 19:02:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:02:49,883 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:02:49,884 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:02:49,976 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:02:49,980 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:02:49,980 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 19:02:49,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:02:49 BoogieIcfgContainer [2022-12-13 19:02:49,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:02:49,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:02:49,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:02:49,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:02:49,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:02:48" (1/3) ... [2022-12-13 19:02:49,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770c148d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:02:49, skipping insertion in model container [2022-12-13 19:02:49,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:49" (2/3) ... [2022-12-13 19:02:49,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770c148d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:02:49, skipping insertion in model container [2022-12-13 19:02:49,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:02:49" (3/3) ... [2022-12-13 19:02:49,988 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_03_bad.i [2022-12-13 19:02:50,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:02:50,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:02:50,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:02:50,043 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;@f340a50, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:02:50,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 19:02:50,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 19 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 19:02:50,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 19:02:50,053 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:02:50,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:02:50,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:02:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash -500819106, now seen corresponding path program 1 times [2022-12-13 19:02:50,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:50,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815540301] [2022-12-13 19:02:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:50,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:50,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:02:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:02:50,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:02:50,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815540301] [2022-12-13 19:02:50,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815540301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:50,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:50,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:02:50,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193212744] [2022-12-13 19:02:50,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:50,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:02:50,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:02:50,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:02:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:02:50,270 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 19 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:02:50,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:02:50,284 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-12-13 19:02:50,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:02:50,286 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-12-13 19:02:50,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:02:50,291 INFO L225 Difference]: With dead ends: 38 [2022-12-13 19:02:50,291 INFO L226 Difference]: Without dead ends: 16 [2022-12-13 19:02:50,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:02:50,296 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:02:50,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:02:50,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-13 19:02:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-13 19:02:50,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 19:02:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-12-13 19:02:50,323 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2022-12-13 19:02:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:02:50,324 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-13 19:02:50,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:02:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-12-13 19:02:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 19:02:50,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:02:50,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:02:50,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:02:50,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:02:50,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:50,326 INFO L85 PathProgramCache]: Analyzing trace with hash -251131453, now seen corresponding path program 1 times [2022-12-13 19:02:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:02:50,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940526826] [2022-12-13 19:02:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:50,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:02:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:02:50,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:02:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:02:50,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:02:50,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:02:50,404 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 19:02:50,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 19:02:50,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:02:50,409 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 19:02:50,411 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:02:50,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:02:50 BoogieIcfgContainer [2022-12-13 19:02:50,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:02:50,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:02:50,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:02:50,434 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:02:50,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:02:49" (3/4) ... [2022-12-13 19:02:50,437 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:02:50,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:02:50,438 INFO L158 Benchmark]: Toolchain (without parser) took 1540.30ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 100.6MB in the beginning and 82.5MB in the end (delta: 18.1MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. [2022-12-13 19:02:50,438 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 136.3MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:02:50,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 765.42ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 100.2MB in the beginning and 130.7MB in the end (delta: -30.5MB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. [2022-12-13 19:02:50,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.80ms. Allocated memory is still 174.1MB. Free memory was 130.7MB in the beginning and 127.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 19:02:50,440 INFO L158 Benchmark]: Boogie Preprocessor took 18.52ms. Allocated memory is still 174.1MB. Free memory was 127.5MB in the beginning and 126.5MB in the end (delta: 991.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:02:50,440 INFO L158 Benchmark]: RCFGBuilder took 261.37ms. Allocated memory is still 174.1MB. Free memory was 126.5MB in the beginning and 113.8MB in the end (delta: 12.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 19:02:50,441 INFO L158 Benchmark]: TraceAbstraction took 450.17ms. Allocated memory is still 174.1MB. Free memory was 112.8MB in the beginning and 83.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-13 19:02:50,441 INFO L158 Benchmark]: Witness Printer took 2.97ms. Allocated memory is still 174.1MB. Free memory was 83.5MB in the beginning and 82.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:02:50,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 136.3MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 765.42ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 100.2MB in the beginning and 130.7MB in the end (delta: -30.5MB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.80ms. Allocated memory is still 174.1MB. Free memory was 130.7MB in the beginning and 127.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.52ms. Allocated memory is still 174.1MB. Free memory was 127.5MB in the beginning and 126.5MB in the end (delta: 991.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 261.37ms. Allocated memory is still 174.1MB. Free memory was 126.5MB in the beginning and 113.8MB in the end (delta: 12.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 450.17ms. Allocated memory is still 174.1MB. Free memory was 112.8MB in the beginning and 83.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 2.97ms. Allocated memory is still 174.1MB. Free memory was 83.5MB in the beginning and 82.5MB in the end (delta: 1.0MB). There was no memory consumed. 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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] [L1577] 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) [L1577] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, argv={1073741827:1073741831}, argv={1073741827:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_03_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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] [L1569] data - 1 VAL [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: 1569]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 26 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 19:02:50,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_03_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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_695a9764-82d9-4f76-becf-2c75451355cd/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 72790c58224f12ce48b7763f6b5625a9cd07ad6e26dcf083ccd0ee5ef61318c8 --- 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 19:02:52,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:02:52,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:02:52,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:02:52,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:02:52,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:02:52,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:02:52,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:02:52,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:02:52,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:02:52,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:02:52,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:02:52,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:02:52,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:02:52,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:02:52,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:02:52,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:02:52,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:02:52,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:02:52,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:02:52,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:02:52,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:02:52,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:02:52,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:02:52,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:02:52,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:02:52,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:02:52,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:02:52,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:02:52,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:02:52,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:02:52,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:02:52,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:02:52,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:02:52,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:02:52,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:02:52,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:02:52,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:02:52,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:02:52,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:02:52,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:02:52,217 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 19:02:52,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:02:52,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:02:52,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:02:52,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:02:52,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:02:52,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:02:52,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:02:52,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:02:52,234 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:02:52,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:02:52,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:02:52,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:02:52,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:02:52,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:02:52,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:02:52,235 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:02:52,235 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 19:02:52,235 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:02:52,235 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 19:02:52,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:02:52,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:02:52,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:02:52,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:02:52,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:02:52,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:02:52,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:02:52,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:02:52,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:02:52,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:02:52,237 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 19:02:52,237 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 19:02:52,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:02:52,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:02:52,237 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:02:52,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:02:52,237 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 19:02:52,237 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:02:52,237 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_695a9764-82d9-4f76-becf-2c75451355cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72790c58224f12ce48b7763f6b5625a9cd07ad6e26dcf083ccd0ee5ef61318c8 [2022-12-13 19:02:52,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:02:52,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:02:52,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:02:52,463 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:02:52,463 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:02:52,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_03_bad.i [2022-12-13 19:02:55,096 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:02:55,353 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:02:55,353 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_03_bad.i [2022-12-13 19:02:55,366 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/data/fef128e66/06afc69fa68346ca81a6e8c95a66a57e/FLAGcb90da839 [2022-12-13 19:02:55,380 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/data/fef128e66/06afc69fa68346ca81a6e8c95a66a57e [2022-12-13 19:02:55,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:02:55,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:02:55,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:02:55,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:02:55,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:02:55,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:02:55" (1/1) ... [2022-12-13 19:02:55,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586ccf8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:55, skipping insertion in model container [2022-12-13 19:02:55,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:02:55" (1/1) ... [2022-12-13 19:02:55,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:02:55,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:02:55,661 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:02:55,922 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:02:55,926 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:02:55,927 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:02:55,929 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:02:55,929 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:02:55,943 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:02:55,946 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:02:55,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:02:55,957 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:02:55,970 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:02:56,008 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:02:56,010 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:02:56,010 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:02:56,012 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:02:56,012 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:02:56,015 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:02:56,017 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:02:56,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:02:56,108 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:02:56,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56 WrapperNode [2022-12-13 19:02:56,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:02:56,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:02:56,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:02:56,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:02:56,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,145 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-12-13 19:02:56,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:02:56,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:02:56,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:02:56,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:02:56,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:02:56,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:02:56,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:02:56,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:02:56,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (1/1) ... [2022-12-13 19:02:56,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:02:56,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:02:56,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:02:56,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:02:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 19:02:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 19:02:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 19:02:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:02:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 19:02:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:02:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:02:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:02:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:02:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 19:02:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 19:02:56,335 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:02:56,336 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:02:56,450 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:02:56,455 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:02:56,455 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 19:02:56,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:02:56 BoogieIcfgContainer [2022-12-13 19:02:56,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:02:56,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:02:56,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:02:56,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:02:56,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:02:55" (1/3) ... [2022-12-13 19:02:56,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202dbc51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:02:56, skipping insertion in model container [2022-12-13 19:02:56,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:02:56" (2/3) ... [2022-12-13 19:02:56,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202dbc51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:02:56, skipping insertion in model container [2022-12-13 19:02:56,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:02:56" (3/3) ... [2022-12-13 19:02:56,467 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_03_bad.i [2022-12-13 19:02:56,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:02:56,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:02:56,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:02:56,519 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;@62a52673, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:02:56,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 19:02:56,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 19 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 19:02:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 19:02:56,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:02:56,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:02:56,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:02:56,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:56,534 INFO L85 PathProgramCache]: Analyzing trace with hash -500819106, now seen corresponding path program 1 times [2022-12-13 19:02:56,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:02:56,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508261487] [2022-12-13 19:02:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:56,544 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 19:02:56,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:02:56,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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 19:02:56,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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 19:02:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:02:56,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 19:02:56,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:02:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:02:56,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:02:56,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:02:56,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508261487] [2022-12-13 19:02:56,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508261487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:02:56,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:02:56,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:02:56,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073146762] [2022-12-13 19:02:56,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:02:56,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:02:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:02:56,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:02:56,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:02:56,724 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 19 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:02:56,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:02:56,742 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-12-13 19:02:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:02:56,744 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-12-13 19:02:56,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:02:56,750 INFO L225 Difference]: With dead ends: 37 [2022-12-13 19:02:56,750 INFO L226 Difference]: Without dead ends: 14 [2022-12-13 19:02:56,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:02:56,756 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:02:56,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:02:56,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-13 19:02:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-13 19:02:56,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 19:02:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-12-13 19:02:56,786 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-12-13 19:02:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:02:56,787 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-12-13 19:02:56,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:02:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-12-13 19:02:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 19:02:56,788 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:02:56,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:02:56,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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 19:02:56,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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 19:02:56,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:02:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:02:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash -251131453, now seen corresponding path program 1 times [2022-12-13 19:02:56,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:02:56,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934517655] [2022-12-13 19:02:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:02:56,991 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 19:02:56,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:02:56,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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 19:02:56,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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 (3)] Waiting until timeout for monitored process [2022-12-13 19:02:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:02:57,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:02:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:02:57,126 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 19:02:57,126 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:02:57,128 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 19:02:57,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 19:02:57,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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 (3)] Ended with exit code 0 [2022-12-13 19:02:57,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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 19:02:57,342 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 19:02:57,355 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:02:57,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:02:57 BoogieIcfgContainer [2022-12-13 19:02:57,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:02:57,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:02:57,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:02:57,432 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:02:57,434 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:02:56" (3/4) ... [2022-12-13 19:02:57,444 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:02:57,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:02:57,448 INFO L158 Benchmark]: Toolchain (without parser) took 2062.00ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.4MB in the beginning and 47.4MB in the end (delta: -5.0MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-12-13 19:02:57,449 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 48.2MB. Free memory was 26.7MB in the beginning and 26.6MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:02:57,452 INFO L158 Benchmark]: CACSL2BoogieTranslator took 723.79ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.3MB in the beginning and 53.8MB in the end (delta: -11.6MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2022-12-13 19:02:57,453 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.25ms. Allocated memory is still 81.8MB. Free memory was 53.8MB in the beginning and 50.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:02:57,455 INFO L158 Benchmark]: Boogie Preprocessor took 20.70ms. Allocated memory is still 81.8MB. Free memory was 50.9MB in the beginning and 48.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:02:57,457 INFO L158 Benchmark]: RCFGBuilder took 289.49ms. Allocated memory is still 81.8MB. Free memory was 48.8MB in the beginning and 34.9MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 19:02:57,458 INFO L158 Benchmark]: TraceAbstraction took 971.42ms. Allocated memory is still 81.8MB. Free memory was 34.1MB in the beginning and 47.4MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:02:57,459 INFO L158 Benchmark]: Witness Printer took 13.93ms. Allocated memory is still 81.8MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:02:57,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 48.2MB. Free memory was 26.7MB in the beginning and 26.6MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 723.79ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.3MB in the beginning and 53.8MB in the end (delta: -11.6MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.25ms. Allocated memory is still 81.8MB. Free memory was 53.8MB in the beginning and 50.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.70ms. Allocated memory is still 81.8MB. Free memory was 50.9MB in the beginning and 48.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 289.49ms. Allocated memory is still 81.8MB. Free memory was 48.8MB in the beginning and 34.9MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 971.42ms. Allocated memory is still 81.8MB. Free memory was 34.1MB in the beginning and 47.4MB in the end (delta: -13.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 13.93ms. Allocated memory is still 81.8MB. Free memory is still 47.4MB. There was no memory consumed. 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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] [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_03_bad() [L1550] int data; [L1551] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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] [L1569] data - 1 VAL [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: 1569]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 19:02:57,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_695a9764-82d9-4f76-becf-2c75451355cd/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