./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 38b53e6a 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_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/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_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur --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-38b53e6 [2022-11-25 22:35:11,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:35:11,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:35:11,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:35:11,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:35:11,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:35:11,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:35:11,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:35:11,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:35:11,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:35:11,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:35:11,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:35:11,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:35:11,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:35:11,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:35:11,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:35:11,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:35:11,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:35:11,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:35:11,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:35:11,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:35:11,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:35:11,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:35:11,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:35:11,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:35:11,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:35:11,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:35:11,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:35:11,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:35:11,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:35:11,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:35:11,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:35:11,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:35:11,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:35:11,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:35:11,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:35:11,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:35:11,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:35:11,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:35:11,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:35:11,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:35:11,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 22:35:11,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:35:11,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:35:11,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:35:11,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:35:11,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:35:11,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:35:11,229 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:35:11,229 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:35:11,230 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:35:11,230 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:35:11,231 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:35:11,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:35:11,232 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:35:11,232 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:35:11,233 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:35:11,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:35:11,233 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:35:11,234 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:35:11,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:35:11,235 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:35:11,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:35:11,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:35:11,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:35:11,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:35:11,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:35:11,237 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:35:11,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:35:11,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:35:11,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:35:11,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:35:11,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:35:11,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:35:11,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:35:11,240 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:35:11,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:35:11,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:35:11,241 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:35:11,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:35:11,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:35:11,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:35:11,242 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_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acdde09f23e703658bc515440a08ab5c81112e6ec51a1ab42bcc0fc0dc135831 [2022-11-25 22:35:11,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:35:11,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:35:11,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:35:11,645 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:35:11,646 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:35:11,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-11-25 22:35:14,834 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:35:15,299 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:35:15,303 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-11-25 22:35:15,350 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/data/c8ceecb0f/6d3e386dbd2c4ef696e3d87f642fe460/FLAG97699714a [2022-11-25 22:35:15,426 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/data/c8ceecb0f/6d3e386dbd2c4ef696e3d87f642fe460 [2022-11-25 22:35:15,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:35:15,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:35:15,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:35:15,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:35:15,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:35:15,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:35:15" (1/1) ... [2022-11-25 22:35:15,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a051d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:15, skipping insertion in model container [2022-11-25 22:35:15,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:35:15" (1/1) ... [2022-11-25 22:35:15,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:35:15,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:35:16,031 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:35:16,548 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:35:16,556 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:35:16,564 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:35:16,567 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:35:16,568 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:35:16,618 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:35:16,635 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:35:16,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:35:16,658 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:35:16,692 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:35:16,795 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:35:16,800 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:35:16,802 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:35:16,809 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:35:16,810 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:35:16,828 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:35:16,831 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:35:16,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:35:17,034 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:35:17,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17 WrapperNode [2022-11-25 22:35:17,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:35:17,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:35:17,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:35:17,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:35:17,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,120 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-11-25 22:35:17,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:35:17,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:35:17,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:35:17,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:35:17,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,151 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:35:17,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:35:17,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:35:17,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:35:17,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (1/1) ... [2022-11-25 22:35:17,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:35:17,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:35:17,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:35:17,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:35:17,280 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 22:35:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 22:35:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 22:35:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:35:17,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 22:35:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:35:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:35:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:35:17,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:35:17,283 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 22:35:17,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:35:17,487 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:35:17,490 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:35:17,683 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:35:17,728 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:35:17,728 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:35:17,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:35:17 BoogieIcfgContainer [2022-11-25 22:35:17,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:35:17,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:35:17,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:35:17,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:35:17,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:35:15" (1/3) ... [2022-11-25 22:35:17,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2bedf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:35:17, skipping insertion in model container [2022-11-25 22:35:17,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:17" (2/3) ... [2022-11-25 22:35:17,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2bedf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:35:17, skipping insertion in model container [2022-11-25 22:35:17,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:35:17" (3/3) ... [2022-11-25 22:35:17,756 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-11-25 22:35:17,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:35:17,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:35:17,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:35:17,845 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;@2e9653c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:35:17,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:35:17,851 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) [2022-11-25 22:35:17,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 22:35:17,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:35:17,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:35:17,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 22:35:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:35:17,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1607565872, now seen corresponding path program 1 times [2022-11-25 22:35:17,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:35:17,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395009968] [2022-11-25 22:35:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:35:17,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:35:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:35:18,063 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:35:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:35:18,124 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 22:35:18,126 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:35:18,128 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 22:35:18,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 22:35:18,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:35:18,138 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 22:35:18,148 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:35:18,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:35:18 BoogieIcfgContainer [2022-11-25 22:35:18,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:35:18,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:35:18,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:35:18,204 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:35:18,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:35:17" (3/4) ... [2022-11-25 22:35:18,211 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 22:35:18,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:35:18,212 INFO L158 Benchmark]: Toolchain (without parser) took 2781.17ms. Allocated memory is still 184.5MB. Free memory was 145.3MB in the beginning and 56.9MB in the end (delta: 88.4MB). Peak memory consumption was 87.6MB. Max. memory is 16.1GB. [2022-11-25 22:35:18,213 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:35:18,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1611.00ms. Allocated memory is still 184.5MB. Free memory was 144.4MB in the beginning and 93.8MB in the end (delta: 50.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-11-25 22:35:18,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.89ms. Allocated memory is still 184.5MB. Free memory was 93.8MB in the beginning and 90.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 22:35:18,215 INFO L158 Benchmark]: Boogie Preprocessor took 34.73ms. Allocated memory is still 184.5MB. Free memory was 90.4MB in the beginning and 89.6MB in the end (delta: 850.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:35:18,216 INFO L158 Benchmark]: RCFGBuilder took 574.89ms. Allocated memory is still 184.5MB. Free memory was 89.6MB in the beginning and 74.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 22:35:18,216 INFO L158 Benchmark]: TraceAbstraction took 456.64ms. Allocated memory is still 184.5MB. Free memory was 73.6MB in the beginning and 56.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 22:35:18,217 INFO L158 Benchmark]: Witness Printer took 7.84ms. Allocated memory is still 184.5MB. Free memory is still 56.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:35:18,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1611.00ms. Allocated memory is still 184.5MB. Free memory was 144.4MB in the beginning and 93.8MB in the end (delta: 50.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.89ms. Allocated memory is still 184.5MB. Free memory was 93.8MB in the beginning and 90.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.73ms. Allocated memory is still 184.5MB. Free memory was 90.4MB in the beginning and 89.6MB in the end (delta: 850.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 574.89ms. Allocated memory is still 184.5MB. Free memory was 89.6MB in the beginning and 74.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 456.64ms. Allocated memory is still 184.5MB. Free memory was 73.6MB in the beginning and 56.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 7.84ms. Allocated memory is still 184.5MB. Free memory is still 56.9MB. 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: 0.3s, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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 [2022-11-25 22:35:18,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/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_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/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_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur --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-38b53e6 [2022-11-25 22:35:21,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:35:21,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:35:21,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:35:21,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:35:21,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:35:21,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:35:21,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:35:21,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:35:21,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:35:21,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:35:21,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:35:21,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:35:21,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:35:21,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:35:21,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:35:21,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:35:21,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:35:21,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:35:21,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:35:21,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:35:21,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:35:21,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:35:21,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:35:21,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:35:21,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:35:21,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:35:21,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:35:21,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:35:21,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:35:21,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:35:21,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:35:21,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:35:21,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:35:21,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:35:21,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:35:21,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:35:21,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:35:21,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:35:21,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:35:21,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:35:21,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-25 22:35:21,357 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:35:21,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:35:21,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:35:21,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:35:21,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:35:21,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:35:21,360 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:35:21,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:35:21,361 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:35:21,361 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:35:21,361 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:35:21,361 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:35:21,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:35:21,363 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:35:21,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:35:21,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:35:21,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:35:21,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:35:21,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:35:21,364 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 22:35:21,365 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:35:21,365 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 22:35:21,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:35:21,366 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:35:21,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:35:21,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:35:21,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 22:35:21,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:35:21,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:35:21,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:35:21,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:35:21,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:35:21,368 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 22:35:21,369 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 22:35:21,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:35:21,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:35:21,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 22:35:21,370 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_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acdde09f23e703658bc515440a08ab5c81112e6ec51a1ab42bcc0fc0dc135831 [2022-11-25 22:35:21,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:35:21,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:35:21,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:35:21,894 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:35:21,895 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:35:21,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-11-25 22:35:25,172 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:35:25,608 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:35:25,611 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-11-25 22:35:25,639 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/data/fbedfe64c/e04bbaf6e89546d7bf88d64c03675622/FLAGd6a40f371 [2022-11-25 22:35:25,657 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/data/fbedfe64c/e04bbaf6e89546d7bf88d64c03675622 [2022-11-25 22:35:25,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:35:25,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:35:25,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:35:25,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:35:25,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:35:25,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:35:25" (1/1) ... [2022-11-25 22:35:25,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b26032c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:25, skipping insertion in model container [2022-11-25 22:35:25,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:35:25" (1/1) ... [2022-11-25 22:35:25,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:35:25,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:35:26,289 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:35:27,049 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:35:27,056 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:35:27,058 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:35:27,066 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:35:27,067 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:35:27,103 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:35:27,111 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:35:27,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:35:27,131 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:35:27,165 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:35:27,222 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:35:27,223 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:35:27,224 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:35:27,226 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:35:27,227 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:35:27,231 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:35:27,232 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:35:27,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:35:27,404 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:35:27,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27 WrapperNode [2022-11-25 22:35:27,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:35:27,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:35:27,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:35:27,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:35:27,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,501 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-11-25 22:35:27,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:35:27,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:35:27,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:35:27,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:35:27,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:35:27,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:35:27,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:35:27,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:35:27,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (1/1) ... [2022-11-25 22:35:27,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:35:27,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:35:27,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:35:27,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:35:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 22:35:27,622 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 22:35:27,622 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 22:35:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:35:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 22:35:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:35:27,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:35:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:35:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:35:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 22:35:27,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 22:35:27,781 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:35:27,783 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:35:27,937 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:35:27,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:35:27,942 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:35:27,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:35:27 BoogieIcfgContainer [2022-11-25 22:35:27,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:35:27,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:35:27,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:35:27,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:35:27,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:35:25" (1/3) ... [2022-11-25 22:35:27,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b87281e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:35:27, skipping insertion in model container [2022-11-25 22:35:27,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:35:27" (2/3) ... [2022-11-25 22:35:27,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b87281e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:35:27, skipping insertion in model container [2022-11-25 22:35:27,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:35:27" (3/3) ... [2022-11-25 22:35:27,957 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2022-11-25 22:35:27,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:35:27,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:35:28,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:35:28,087 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;@6ff69117, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:35:28,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:35:28,092 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) [2022-11-25 22:35:28,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 22:35:28,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:35:28,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:35:28,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 22:35:28,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:35:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-11-25 22:35:28,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:35:28,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123409300] [2022-11-25 22:35:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:35:28,147 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 [2022-11-25 22:35:28,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:35:28,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:35:28,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:35:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:35:28,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:35:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:35:28,399 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 22:35:28,401 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:35:28,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 22:35:28,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 22:35:28,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:35:28,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:35:28,617 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 22:35:28,621 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:35:28,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:35:28 BoogieIcfgContainer [2022-11-25 22:35:28,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:35:28,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:35:28,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:35:28,654 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:35:28,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:35:27" (3/4) ... [2022-11-25 22:35:28,658 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 22:35:28,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:35:28,659 INFO L158 Benchmark]: Toolchain (without parser) took 2997.55ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.2MB in the beginning and 43.3MB in the end (delta: -1.1MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2022-11-25 22:35:28,660 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 50.3MB. Free memory was 28.4MB in the beginning and 28.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:35:28,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1738.16ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.0MB in the beginning and 36.5MB in the end (delta: 5.5MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2022-11-25 22:35:28,661 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.55ms. Allocated memory is still 81.8MB. Free memory was 36.5MB in the beginning and 54.4MB in the end (delta: -17.9MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2022-11-25 22:35:28,662 INFO L158 Benchmark]: Boogie Preprocessor took 31.58ms. Allocated memory is still 81.8MB. Free memory was 54.3MB in the beginning and 52.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:35:28,663 INFO L158 Benchmark]: RCFGBuilder took 409.42ms. Allocated memory is still 81.8MB. Free memory was 52.2MB in the beginning and 38.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 22:35:28,663 INFO L158 Benchmark]: TraceAbstraction took 706.67ms. Allocated memory is still 81.8MB. Free memory was 37.5MB in the beginning and 43.3MB in the end (delta: -5.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:35:28,664 INFO L158 Benchmark]: Witness Printer took 4.59ms. Allocated memory is still 81.8MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:35:28,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 50.3MB. Free memory was 28.4MB in the beginning and 28.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1738.16ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.0MB in the beginning and 36.5MB in the end (delta: 5.5MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.55ms. Allocated memory is still 81.8MB. Free memory was 36.5MB in the beginning and 54.4MB in the end (delta: -17.9MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.58ms. Allocated memory is still 81.8MB. Free memory was 54.3MB in the beginning and 52.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 409.42ms. Allocated memory is still 81.8MB. Free memory was 52.2MB in the beginning and 38.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 706.67ms. Allocated memory is still 81.8MB. Free memory was 37.5MB in the beginning and 43.3MB in the end (delta: -5.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.59ms. Allocated memory is still 81.8MB. Free memory is still 43.3MB. 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: 0.6s, 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 [2022-11-25 22:35:28,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f8e38ba-9414-472c-b7f4-d94e4bbe6776/bin/utaipan-ByfvJB40ur/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample