./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash acdde09f23e703658bc515440a08ab5c81112e6ec51a1ab42bcc0fc0dc135831 --- 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 [2022-12-14 14:47:16,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:47:16,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:47:16,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:47:16,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:47:16,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:47:16,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:47:16,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:47:16,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:47:16,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:47:16,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:47:16,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:47:16,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:47:16,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:47:16,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:47:16,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:47:16,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:47:16,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:47:16,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:47:16,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:47:16,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:47:16,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:47:16,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:47:16,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:47:16,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:47:16,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:47:16,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:47:16,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:47:16,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:47:16,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:47:16,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:47:16,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:47:16,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:47:16,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:47:16,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:47:16,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:47:16,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:47:16,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:47:16,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:47:16,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:47:16,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:47:16,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 14:47:16,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:47:16,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:47:16,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:47:16,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:47:16,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:47:16,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:47:16,365 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:47:16,365 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:47:16,365 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:47:16,365 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:47:16,365 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:47:16,365 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:47:16,366 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:47:16,366 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:47:16,366 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:47:16,366 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:47:16,366 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:47:16,366 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:47:16,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:47:16,367 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:47:16,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:47:16,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:47:16,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:47:16,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:47:16,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:47:16,368 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:47:16,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:47:16,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:47:16,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:47:16,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:47:16,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:47:16,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:47:16,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:47:16,368 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:47:16,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:47:16,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:47:16,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:47:16,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:47:16,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:47:16,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:47:16,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acdde09f23e703658bc515440a08ab5c81112e6ec51a1ab42bcc0fc0dc135831 [2022-12-14 14:47:16,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:47:16,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:47:16,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:47:16,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:47:16,596 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:47:16,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-12-14 14:47:19,149 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:47:19,345 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:47:19,346 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-12-14 14:47:19,358 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/data/1961d94fb/6d6089f326ca4d3a9fb41dc8bca5cfcc/FLAGeea5a05f6 [2022-12-14 14:47:19,368 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/data/1961d94fb/6d6089f326ca4d3a9fb41dc8bca5cfcc [2022-12-14 14:47:19,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:47:19,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:47:19,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:47:19,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:47:19,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:47:19,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:47:19" (1/1) ... [2022-12-14 14:47:19,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdaac97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:19, skipping insertion in model container [2022-12-14 14:47:19,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:47:19" (1/1) ... [2022-12-14 14:47:19,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:47:19,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:47:19,693 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:47:19,968 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:47:19,972 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:47:19,974 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:47:19,976 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:47:19,976 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:47:19,991 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:47:19,995 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:47:19,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:47:20,003 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:47:20,018 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:47:20,079 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:47:20,080 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:47:20,081 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:47:20,083 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:47:20,083 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:47:20,086 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:47:20,088 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:47:20,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:47:20,164 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:47:20,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20 WrapperNode [2022-12-14 14:47:20,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:47:20,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:47:20,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:47:20,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:47:20,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,200 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-12-14 14:47:20,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:47:20,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:47:20,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:47:20,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:47:20,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,215 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:47:20,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:47:20,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:47:20,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:47:20,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (1/1) ... [2022-12-14 14:47:20,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:47:20,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:47:20,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:47:20,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:47:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 14:47:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 14:47:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 14:47:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:47:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 14:47:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:47:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:47:20,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:47:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:47:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 14:47:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:47:20,396 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:47:20,398 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:47:20,515 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:47:20,537 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:47:20,537 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 14:47:20,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:20 BoogieIcfgContainer [2022-12-14 14:47:20,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:47:20,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:47:20,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:47:20,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:47:20,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:47:19" (1/3) ... [2022-12-14 14:47:20,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a00fab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:47:20, skipping insertion in model container [2022-12-14 14:47:20,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:20" (2/3) ... [2022-12-14 14:47:20,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a00fab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:47:20, skipping insertion in model container [2022-12-14 14:47:20,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:20" (3/3) ... [2022-12-14 14:47:20,549 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-12-14 14:47:20,568 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:47:20,568 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:47:20,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:47:20,617 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=FINITE_AUTOMATA, 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;@ddc03ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:47:20,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:47:20,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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) [2022-12-14 14:47:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:47:20,626 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:47:20,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:47:20,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:47:20,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:47:20,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1607565872, now seen corresponding path program 1 times [2022-12-14 14:47:20,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:47:20,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78639081] [2022-12-14 14:47:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:47:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:47:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:47:20,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:47:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:47:20,799 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:47:20,800 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:47:20,801 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 14:47:20,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 14:47:20,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:47:20,806 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 14:47:20,809 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:47:20,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:47:20 BoogieIcfgContainer [2022-12-14 14:47:20,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:47:20,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:47:20,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:47:20,824 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:47:20,824 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:20" (3/4) ... [2022-12-14 14:47:20,827 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:47:20,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:47:20,828 INFO L158 Benchmark]: Toolchain (without parser) took 1456.65ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 71.3MB in the beginning and 94.1MB in the end (delta: -22.8MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2022-12-14 14:47:20,829 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 115.3MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:47:20,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 793.29ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 70.9MB in the beginning and 80.7MB in the end (delta: -9.7MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2022-12-14 14:47:20,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.42ms. Allocated memory is still 148.9MB. Free memory was 80.7MB in the beginning and 77.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:47:20,831 INFO L158 Benchmark]: Boogie Preprocessor took 17.30ms. Allocated memory is still 148.9MB. Free memory was 77.9MB in the beginning and 76.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:47:20,831 INFO L158 Benchmark]: RCFGBuilder took 322.17ms. Allocated memory is still 148.9MB. Free memory was 76.5MB in the beginning and 111.8MB in the end (delta: -35.3MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2022-12-14 14:47:20,832 INFO L158 Benchmark]: TraceAbstraction took 280.11ms. Allocated memory is still 148.9MB. Free memory was 110.8MB in the beginning and 95.0MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 14:47:20,832 INFO L158 Benchmark]: Witness Printer took 3.33ms. Allocated memory is still 148.9MB. Free memory was 95.0MB in the beginning and 94.1MB in the end (delta: 969.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:47:20,835 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 115.3MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 793.29ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 70.9MB in the beginning and 80.7MB in the end (delta: -9.7MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.42ms. Allocated memory is still 148.9MB. Free memory was 80.7MB in the beginning and 77.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.30ms. Allocated memory is still 148.9MB. Free memory was 77.9MB in the beginning and 76.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 322.17ms. Allocated memory is still 148.9MB. Free memory was 76.5MB in the beginning and 111.8MB in the end (delta: -35.3MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 280.11ms. Allocated memory is still 148.9MB. Free memory was 110.8MB in the beginning and 95.0MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.33ms. Allocated memory is still 148.9MB. Free memory was 95.0MB in the beginning and 94.1MB in the end (delta: 969.5kB). 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: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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); [L1576] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1576] RET printLine("Calling bad()...") VAL [\old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, argv={1073741828:1073741827}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] int dataCopy = data; [L1565] int data = dataCopy; VAL [data=-2147483648, data=-2147483648, dataCopy=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] --data VAL [data=-2147483648, data=-2147483648, dataCopy=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1567]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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 [2022-12-14 14:47:20,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash acdde09f23e703658bc515440a08ab5c81112e6ec51a1ab42bcc0fc0dc135831 --- 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 [2022-12-14 14:47:22,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:47:22,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:47:22,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:47:22,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:47:22,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:47:22,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:47:22,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:47:22,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:47:22,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:47:22,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:47:22,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:47:22,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:47:22,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:47:22,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:47:22,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:47:22,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:47:22,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:47:22,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:47:22,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:47:22,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:47:22,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:47:22,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:47:22,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:47:22,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:47:22,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:47:22,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:47:22,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:47:22,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:47:22,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:47:22,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:47:22,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:47:22,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:47:22,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:47:22,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:47:22,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:47:22,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:47:22,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:47:22,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:47:22,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:47:22,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:47:22,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 14:47:22,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:47:22,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:47:22,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:47:22,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:47:22,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:47:22,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:47:22,584 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:47:22,584 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:47:22,584 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:47:22,584 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:47:22,585 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:47:22,585 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:47:22,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:47:22,585 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:47:22,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:47:22,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:47:22,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:47:22,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:47:22,586 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:47:22,586 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:47:22,586 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 14:47:22,586 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:47:22,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:47:22,586 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:47:22,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:47:22,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:47:22,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:47:22,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:47:22,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:47:22,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:47:22,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:47:22,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:47:22,588 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:47:22,588 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:47:22,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:47:22,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:47:22,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:47:22,588 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acdde09f23e703658bc515440a08ab5c81112e6ec51a1ab42bcc0fc0dc135831 [2022-12-14 14:47:22,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:47:22,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:47:22,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:47:22,822 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:47:22,822 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:47:22,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-12-14 14:47:25,437 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:47:25,628 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:47:25,629 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-12-14 14:47:25,641 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/data/d3948895f/07daf2e0867e493fbae25a693163964c/FLAG7356e879a [2022-12-14 14:47:25,651 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/data/d3948895f/07daf2e0867e493fbae25a693163964c [2022-12-14 14:47:25,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:47:25,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:47:25,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:47:25,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:47:25,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:47:25,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:47:25" (1/1) ... [2022-12-14 14:47:25,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ffa3d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:25, skipping insertion in model container [2022-12-14 14:47:25,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:47:25" (1/1) ... [2022-12-14 14:47:25,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:47:25,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:47:25,942 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:47:26,273 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:47:26,279 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:47:26,280 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:47:26,282 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:47:26,283 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:47:26,304 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:47:26,309 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:47:26,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:47:26,320 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:47:26,335 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 14:47:26,373 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:47:26,382 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:47:26,382 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 14:47:26,384 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:47:26,384 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 14:47:26,387 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 14:47:26,388 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 14:47:26,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:47:26,477 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:47:26,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26 WrapperNode [2022-12-14 14:47:26,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:47:26,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:47:26,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:47:26,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:47:26,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,527 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-14 14:47:26,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:47:26,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:47:26,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:47:26,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:47:26,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:47:26,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:47:26,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:47:26,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:47:26,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (1/1) ... [2022-12-14 14:47:26,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:47:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:47:26,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:47:26,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:47:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 14:47:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 14:47:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 14:47:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:47:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 14:47:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:47:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:47:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:47:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:47:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 14:47:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 14:47:26,725 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:47:26,727 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:47:26,830 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:47:26,834 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:47:26,834 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 14:47:26,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:26 BoogieIcfgContainer [2022-12-14 14:47:26,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:47:26,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:47:26,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:47:26,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:47:26,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:47:25" (1/3) ... [2022-12-14 14:47:26,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e04fd88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:47:26, skipping insertion in model container [2022-12-14 14:47:26,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:26" (2/3) ... [2022-12-14 14:47:26,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e04fd88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:47:26, skipping insertion in model container [2022-12-14 14:47:26,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:26" (3/3) ... [2022-12-14 14:47:26,842 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-12-14 14:47:26,855 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:47:26,855 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:47:26,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:47:26,910 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=FINITE_AUTOMATA, 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;@6b2cf087, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:47:26,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:47:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 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) [2022-12-14 14:47:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:47:26,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:47:26,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:47:26,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 14:47:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:47:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-12-14 14:47:26,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:47:26,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106105194] [2022-12-14 14:47:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:47:26,941 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 [2022-12-14 14:47:26,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:47:26,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/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) [2022-12-14 14:47:26,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:47:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:47:27,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:47:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:47:27,120 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 14:47:27,122 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:47:27,123 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 14:47:27,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 14:47:27,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:47:27,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:47:27,338 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 14:47:27,351 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:47:27,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:47:27 BoogieIcfgContainer [2022-12-14 14:47:27,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:47:27,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:47:27,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:47:27,411 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:47:27,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:26" (3/4) ... [2022-12-14 14:47:27,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:47:27,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:47:27,425 INFO L158 Benchmark]: Toolchain (without parser) took 1768.77ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 32.9MB in the beginning and 52.6MB in the end (delta: -19.8MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-12-14 14:47:27,425 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory is still 43.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:47:27,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 822.88ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 32.7MB in the beginning and 62.2MB in the end (delta: -29.5MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2022-12-14 14:47:27,429 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.94ms. Allocated memory is still 94.4MB. Free memory was 62.2MB in the beginning and 59.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:47:27,430 INFO L158 Benchmark]: Boogie Preprocessor took 28.54ms. Allocated memory is still 94.4MB. Free memory was 59.2MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:47:27,431 INFO L158 Benchmark]: RCFGBuilder took 279.06ms. Allocated memory is still 94.4MB. Free memory was 57.0MB in the beginning and 42.9MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 14:47:27,432 INFO L158 Benchmark]: TraceAbstraction took 571.89ms. Allocated memory is still 94.4MB. Free memory was 42.4MB in the beginning and 52.6MB in the end (delta: -10.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:47:27,433 INFO L158 Benchmark]: Witness Printer took 11.19ms. Allocated memory is still 94.4MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:47:27,441 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory is still 43.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 822.88ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 32.7MB in the beginning and 62.2MB in the end (delta: -29.5MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.94ms. Allocated memory is still 94.4MB. Free memory was 62.2MB in the beginning and 59.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.54ms. Allocated memory is still 94.4MB. Free memory was 59.2MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 279.06ms. Allocated memory is still 94.4MB. Free memory was 57.0MB in the beginning and 42.9MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 571.89ms. Allocated memory is still 94.4MB. Free memory was 42.4MB in the beginning and 52.6MB in the end (delta: -10.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 11.19ms. Allocated memory is still 94.4MB. Free memory is still 52.6MB. 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: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1576] 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] [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] int dataCopy = data; [L1565] int data = dataCopy; VAL [data=-2147483648, data=-2147483648, dataCopy=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] --data VAL [data=-2147483648, data=-2147483648, dataCopy=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1567]: 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, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 14:47:27,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71b2bdb-4b9c-44dd-b68f-e932d8d1da59/bin/utaipan-gh47qXpMRh/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