./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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_6e340e81-0922-4e62-bb36-a93c70a2f836/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 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea --- 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 19:33:29,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:33:29,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:33:29,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:33:29,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:33:29,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:33:29,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:33:29,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:33:29,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:33:29,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:33:29,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:33:29,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:33:29,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:33:29,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:33:29,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:33:29,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:33:29,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:33:29,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:33:29,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:33:29,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:33:29,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:33:29,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:33:29,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:33:29,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:33:29,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:33:29,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:33:29,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:33:29,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:33:29,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:33:29,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:33:29,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:33:29,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:33:29,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:33:29,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:33:29,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:33:29,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:33:29,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:33:29,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:33:29,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:33:29,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:33:29,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:33:29,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 19:33:29,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:33:29,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:33:29,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:33:29,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:33:29,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:33:29,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:33:29,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:33:29,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:33:29,320 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:33:29,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:33:29,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:33:29,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:33:29,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:33:29,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:33:29,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:33:29,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:33:29,321 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:33:29,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:33:29,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:33:29,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:33:29,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:33:29,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:33:29,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:33:29,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:33:29,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:33:29,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:33:29,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:33:29,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:33:29,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:33:29,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:33:29,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:33:29,324 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:33:29,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:33:29,324 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:33:29,324 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_6e340e81-0922-4e62-bb36-a93c70a2f836/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea [2022-12-13 19:33:29,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:33:29,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:33:29,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:33:29,537 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:33:29,537 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:33:29,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-12-13 19:33:32,051 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:33:32,338 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:33:32,339 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-12-13 19:33:32,358 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/data/5462a5da4/c8dd0f9e9e9945e2bdf7826f94da82d6/FLAG089116198 [2022-12-13 19:33:32,629 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/data/5462a5da4/c8dd0f9e9e9945e2bdf7826f94da82d6 [2022-12-13 19:33:32,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:33:32,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:33:32,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:33:32,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:33:32,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:33:32,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:33:32" (1/1) ... [2022-12-13 19:33:32,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798a4d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:32, skipping insertion in model container [2022-12-13 19:33:32,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:33:32" (1/1) ... [2022-12-13 19:33:32,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:33:32,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:33:32,983 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:33:33,324 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:33:33,328 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:33:33,329 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:33:33,331 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:33:33,332 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:33:33,346 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:33:33,350 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:33:33,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:33:33,358 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:33:33,371 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:33:33,399 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:33:33,400 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:33:33,401 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:33:33,402 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:33:33,403 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:33:33,406 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:33:33,408 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:33:33,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:33:33,521 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:33:33,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33 WrapperNode [2022-12-13 19:33:33,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:33:33,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:33:33,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:33:33,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:33:33,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,568 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-12-13 19:33:33,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:33:33,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:33:33,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:33:33,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:33:33,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,585 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:33:33,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:33:33,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:33:33,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:33:33,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (1/1) ... [2022-12-13 19:33:33,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:33:33,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:33:33,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:33:33,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 19:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 19:33:33,644 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 19:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 19:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:33:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:33:33,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:33:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:33:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 19:33:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:33:33,758 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:33:33,759 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:33:33,862 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:33:33,866 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:33:33,866 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:33:33,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:33:33 BoogieIcfgContainer [2022-12-13 19:33:33,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:33:33,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:33:33,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:33:33,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:33:33,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:33:32" (1/3) ... [2022-12-13 19:33:33,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c658c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:33:33, skipping insertion in model container [2022-12-13 19:33:33,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:33" (2/3) ... [2022-12-13 19:33:33,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c658c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:33:33, skipping insertion in model container [2022-12-13 19:33:33,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:33:33" (3/3) ... [2022-12-13 19:33:33,874 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-12-13 19:33:33,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:33:33,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:33:33,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:33:33,928 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;@3cbcb1ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:33:33,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 19:33:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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 19:33:33,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 19:33:33,939 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:33,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:33,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:33:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-13 19:33:33,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:33,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168732472] [2022-12-13 19:33:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 19:33:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:34,125 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 19:33:34,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:34,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168732472] [2022-12-13 19:33:34,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168732472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:34,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:34,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:33:34,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149583312] [2022-12-13 19:33:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:34,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:33:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:34,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:33:34,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:33:34,154 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 19:33:34,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:34,177 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-12-13 19:33:34,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:33:34,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 11 [2022-12-13 19:33:34,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:34,184 INFO L225 Difference]: With dead ends: 40 [2022-12-13 19:33:34,185 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 19:33:34,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:33:34,189 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:34,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:33:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 19:33:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-13 19:33:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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 19:33:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-12-13 19:33:34,215 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-12-13 19:33:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:34,216 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-12-13 19:33:34,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 19:33:34,216 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-12-13 19:33:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 19:33:34,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:34,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:34,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:33:34,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:33:34,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-13 19:33:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:34,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924305185] [2022-12-13 19:33:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:33:34,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:33:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:33:34,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:33:34,273 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:33:34,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 19:33:34,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 19:33:34,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:33:34,278 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 19:33:34,281 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:33:34,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:33:34 BoogieIcfgContainer [2022-12-13 19:33:34,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:33:34,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:33:34,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:33:34,298 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:33:34,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:33:33" (3/4) ... [2022-12-13 19:33:34,300 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:33:34,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:33:34,301 INFO L158 Benchmark]: Toolchain (without parser) took 1667.52ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 92.8MB in the beginning and 64.6MB in the end (delta: 28.2MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2022-12-13 19:33:34,301 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 132.1MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:33:34,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 887.27ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 92.8MB in the beginning and 114.9MB in the end (delta: -22.0MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. [2022-12-13 19:33:34,302 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.90ms. Allocated memory is still 159.4MB. Free memory was 114.9MB in the beginning and 111.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:33:34,303 INFO L158 Benchmark]: Boogie Preprocessor took 18.63ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 110.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:33:34,303 INFO L158 Benchmark]: RCFGBuilder took 279.85ms. Allocated memory is still 159.4MB. Free memory was 110.7MB in the beginning and 97.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 19:33:34,303 INFO L158 Benchmark]: TraceAbstraction took 427.82ms. Allocated memory is still 159.4MB. Free memory was 97.2MB in the beginning and 64.6MB in the end (delta: 32.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-13 19:33:34,303 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 159.4MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:33:34,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 132.1MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 887.27ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 92.8MB in the beginning and 114.9MB in the end (delta: -22.0MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.90ms. Allocated memory is still 159.4MB. Free memory was 114.9MB in the beginning and 111.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.63ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 110.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 279.85ms. Allocated memory is still 159.4MB. Free memory was 110.7MB in the beginning and 97.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 427.82ms. Allocated memory is still 159.4MB. Free memory was 97.2MB in the beginning and 64.6MB in the end (delta: 32.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 159.4MB. Free memory is still 64.6MB. 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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); [L1548] static const int STATIC_CONST_FIVE = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}, STATIC_CONST_FIVE=5] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [\old(argc)=1073741828, argc=1073741828, argv={1073741827:1073741830}, argv={1073741827:1073741830}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_predec_06_bad() [L1551] int data; [L1552] 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, STATIC_CONST_FIVE=5] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] 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, STATIC_CONST_FIVE=5] [L1567] COND TRUE STATIC_CONST_FIVE==5 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, STATIC_CONST_FIVE=5] [L1570] --data 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, STATIC_CONST_FIVE=5] - UnprovableResult [Line: 1570]: 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, 24 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, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 25 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 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 19:33:34,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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_6e340e81-0922-4e62-bb36-a93c70a2f836/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 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea --- 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 19:33:35,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:33:35,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:33:35,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:33:35,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:33:35,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:33:35,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:33:35,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:33:35,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:33:35,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:33:35,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:33:35,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:33:35,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:33:35,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:33:35,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:33:35,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:33:35,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:33:35,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:33:35,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:33:35,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:33:35,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:33:35,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:33:35,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:33:35,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:33:35,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:33:35,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:33:35,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:33:35,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:33:35,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:33:35,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:33:35,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:33:35,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:33:35,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:33:35,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:33:35,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:33:35,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:33:35,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:33:35,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:33:35,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:33:35,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:33:35,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:33:35,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 19:33:35,948 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:33:35,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:33:35,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:33:35,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:33:35,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:33:35,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:33:35,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:33:35,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:33:35,951 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:33:35,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:33:35,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:33:35,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:33:35,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:33:35,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:33:35,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:33:35,952 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:33:35,952 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 19:33:35,952 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:33:35,953 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 19:33:35,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:33:35,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:33:35,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:33:35,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:33:35,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:33:35,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:33:35,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:33:35,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:33:35,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:33:35,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:33:35,955 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 19:33:35,955 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 19:33:35,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:33:35,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:33:35,956 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:33:35,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:33:35,956 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 19:33:35,956 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:33:35,956 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_6e340e81-0922-4e62-bb36-a93c70a2f836/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a62b2de8890ec813aa852c8a58f76205e53f8ff37d53e2956fb619261f9feea [2022-12-13 19:33:36,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:33:36,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:33:36,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:33:36,207 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:33:36,207 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:33:36,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-12-13 19:33:38,720 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:33:38,946 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:33:38,947 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-12-13 19:33:38,960 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/data/02f354021/d6dafe22f104441eb63b807211c44e73/FLAG32f0607c7 [2022-12-13 19:33:39,271 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/data/02f354021/d6dafe22f104441eb63b807211c44e73 [2022-12-13 19:33:39,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:33:39,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:33:39,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:33:39,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:33:39,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:33:39,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:33:39" (1/1) ... [2022-12-13 19:33:39,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2918a5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:39, skipping insertion in model container [2022-12-13 19:33:39,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:33:39" (1/1) ... [2022-12-13 19:33:39,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:33:39,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:33:39,537 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:33:39,825 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:33:39,829 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:33:39,830 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:33:39,832 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:33:39,832 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:33:39,845 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:33:39,849 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:33:39,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:33:39,861 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:33:39,874 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:33:39,907 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 19:33:39,909 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:33:39,909 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 19:33:39,911 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:33:39,912 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 19:33:39,915 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 19:33:39,916 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 19:33:39,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:33:40,006 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:33:40,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40 WrapperNode [2022-12-13 19:33:40,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:33:40,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:33:40,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:33:40,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:33:40,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,044 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-12-13 19:33:40,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:33:40,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:33:40,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:33:40,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:33:40,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,061 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:33:40,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:33:40,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:33:40,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:33:40,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (1/1) ... [2022-12-13 19:33:40,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:33:40,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:33:40,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:33:40,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:33:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 19:33:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 19:33:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 19:33:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:33:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 19:33:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:33:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:33:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:33:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:33:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 19:33:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 19:33:40,245 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:33:40,247 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:33:40,357 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:33:40,361 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:33:40,361 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:33:40,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:33:40 BoogieIcfgContainer [2022-12-13 19:33:40,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:33:40,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:33:40,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:33:40,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:33:40,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:33:39" (1/3) ... [2022-12-13 19:33:40,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20593c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:33:40, skipping insertion in model container [2022-12-13 19:33:40,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:33:40" (2/3) ... [2022-12-13 19:33:40,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20593c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:33:40, skipping insertion in model container [2022-12-13 19:33:40,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:33:40" (3/3) ... [2022-12-13 19:33:40,370 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_06_bad.i [2022-12-13 19:33:40,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:33:40,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:33:40,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:33:40,421 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;@1dea05ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:33:40,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 19:33:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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 19:33:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 19:33:40,430 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:40,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:40,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:33:40,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:40,434 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-13 19:33:40,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:33:40,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641890590] [2022-12-13 19:33:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:40,444 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 19:33:40,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:33:40,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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 19:33:40,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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 19:33:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:40,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:33:40,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:33:40,627 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 19:33:40,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:33:40,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:33:40,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641890590] [2022-12-13 19:33:40,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641890590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:40,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:40,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:33:40,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078654994] [2022-12-13 19:33:40,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:40,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:33:40,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:33:40,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:33:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:33:40,669 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 19:33:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:33:40,701 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-12-13 19:33:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:33:40,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 11 [2022-12-13 19:33:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:33:40,707 INFO L225 Difference]: With dead ends: 39 [2022-12-13 19:33:40,707 INFO L226 Difference]: Without dead ends: 15 [2022-12-13 19:33:40,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:33:40,711 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:33:40,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:33:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-13 19:33:40,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-13 19:33:40,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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 19:33:40,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-13 19:33:40,735 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-12-13 19:33:40,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:33:40,736 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 19:33:40,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 19:33:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-13 19:33:40,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 19:33:40,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:33:40,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:40,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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 19:33:40,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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 19:33:40,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 19:33:40,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:40,941 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-13 19:33:40,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:33:40,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214955045] [2022-12-13 19:33:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:40,944 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 19:33:40,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:33:40,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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 19:33:40,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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 19:33:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:33:41,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:33:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:33:41,243 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 19:33:41,244 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:33:41,246 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 19:33:41,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 19:33:41,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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 19:33:41,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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 19:33:41,459 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 19:33:41,469 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:33:41,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:33:41 BoogieIcfgContainer [2022-12-13 19:33:41,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:33:41,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:33:41,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:33:41,520 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:33:41,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:33:40" (3/4) ... [2022-12-13 19:33:41,524 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:33:41,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:33:41,524 INFO L158 Benchmark]: Toolchain (without parser) took 2250.02ms. Allocated memory is still 73.4MB. Free memory was 47.1MB in the beginning and 30.2MB in the end (delta: 16.9MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-12-13 19:33:41,525 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 54.5MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:33:41,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 732.12ms. Allocated memory is still 73.4MB. Free memory was 46.9MB in the beginning and 36.9MB in the end (delta: 10.0MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2022-12-13 19:33:41,525 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.33ms. Allocated memory is still 73.4MB. Free memory was 36.9MB in the beginning and 33.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:33:41,526 INFO L158 Benchmark]: Boogie Preprocessor took 19.89ms. Allocated memory is still 73.4MB. Free memory was 33.8MB in the beginning and 31.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:33:41,526 INFO L158 Benchmark]: RCFGBuilder took 298.46ms. Allocated memory is still 73.4MB. Free memory was 31.7MB in the beginning and 37.5MB in the end (delta: -5.7MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-12-13 19:33:41,527 INFO L158 Benchmark]: TraceAbstraction took 1154.86ms. Allocated memory is still 73.4MB. Free memory was 36.5MB in the beginning and 30.6MB in the end (delta: 5.9MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-12-13 19:33:41,527 INFO L158 Benchmark]: Witness Printer took 3.77ms. Allocated memory is still 73.4MB. Free memory was 30.6MB in the beginning and 30.2MB in the end (delta: 383.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:33:41,529 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 54.5MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 732.12ms. Allocated memory is still 73.4MB. Free memory was 46.9MB in the beginning and 36.9MB in the end (delta: 10.0MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.33ms. Allocated memory is still 73.4MB. Free memory was 36.9MB in the beginning and 33.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.89ms. Allocated memory is still 73.4MB. Free memory was 33.8MB in the beginning and 31.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 298.46ms. Allocated memory is still 73.4MB. Free memory was 31.7MB in the beginning and 37.5MB in the end (delta: -5.7MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1154.86ms. Allocated memory is still 73.4MB. Free memory was 36.5MB in the beginning and 30.6MB in the end (delta: 5.9MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Witness Printer took 3.77ms. Allocated memory is still 73.4MB. Free memory was 30.6MB in the beginning and 30.2MB in the end (delta: 383.5kB). 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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); [L1548] static const int STATIC_CONST_FIVE = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}, STATIC_CONST_FIVE=5] [L1414] COND TRUE line != ((void *)0) [L1579] 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, STATIC_CONST_FIVE=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_predec_06_bad() [L1551] int data; [L1552] 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, STATIC_CONST_FIVE=5] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] 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, STATIC_CONST_FIVE=5] [L1567] COND TRUE STATIC_CONST_FIVE==5 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, STATIC_CONST_FIVE=5] [L1570] --data 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, STATIC_CONST_FIVE=5] - UnprovableResult [Line: 1570]: 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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 2 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 19:33:41,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e340e81-0922-4e62-bb36-a93c70a2f836/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