./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW --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 e1b811ebaac96e30d95d25d077da4e563845fb857f9aa9457153539bb79aef42 --- 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-4e7fbc6 [2022-11-23 15:36:21,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:36:21,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:36:21,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:36:21,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:36:21,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:36:21,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:36:21,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:36:21,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:36:21,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:36:21,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:36:21,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:36:21,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:36:21,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:36:21,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:36:21,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:36:21,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:36:21,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:36:21,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:36:21,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:36:21,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:36:21,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:36:21,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:36:21,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:36:21,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:36:21,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:36:21,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:36:21,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:36:21,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:36:21,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:36:21,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:36:21,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:36:21,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:36:21,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:36:21,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:36:21,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:36:21,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:36:21,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:36:21,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:36:21,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:36:21,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:36:21,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:36:21,319 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:36:21,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:36:21,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:36:21,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:36:21,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:36:21,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:36:21,325 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:36:21,325 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:36:21,325 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:36:21,325 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:36:21,327 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:36:21,327 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:36:21,327 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:36:21,327 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:36:21,328 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:36:21,328 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:36:21,328 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:36:21,329 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:36:21,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:36:21,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:36:21,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:36:21,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:36:21,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:36:21,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:36:21,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:36:21,331 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:36:21,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:36:21,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:36:21,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:36:21,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:36:21,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:36:21,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:36:21,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:36:21,333 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:36:21,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:36:21,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:36:21,334 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:36:21,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:36:21,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:36:21,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:36:21,335 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_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1b811ebaac96e30d95d25d077da4e563845fb857f9aa9457153539bb79aef42 [2022-11-23 15:36:21,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:36:21,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:36:21,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:36:21,730 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:36:21,731 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:36:21,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-11-23 15:36:25,137 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:36:25,487 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:36:25,488 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-11-23 15:36:25,517 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/data/1ea6d69f9/28014b7f54ae4bcb93484bb33da5e337/FLAG0e6fb9da9 [2022-11-23 15:36:25,537 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/data/1ea6d69f9/28014b7f54ae4bcb93484bb33da5e337 [2022-11-23 15:36:25,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:36:25,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:36:25,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:36:25,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:36:25,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:36:25,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:25" (1/1) ... [2022-11-23 15:36:25,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf23a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:25, skipping insertion in model container [2022-11-23 15:36:25,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:25" (1/1) ... [2022-11-23 15:36:25,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:36:25,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:36:26,109 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:36:26,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:36:26,641 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:36:26,678 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:36:26,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:36:26,962 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:36:26,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26 WrapperNode [2022-11-23 15:36:26,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:36:26,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:36:26,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:36:26,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:36:26,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,048 INFO L138 Inliner]: procedures = 501, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2022-11-23 15:36:27,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:36:27,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:36:27,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:36:27,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:36:27,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,076 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:36:27,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:36:27,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:36:27,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:36:27,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (1/1) ... [2022-11-23 15:36:27,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:36:27,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:36:27,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:36:27,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:36:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 15:36:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:36:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:36:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:36:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:36:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:36:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:36:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:36:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:36:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:36:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:36:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:36:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:36:27,339 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:36:27,342 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:36:27,651 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:36:27,740 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:36:27,742 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:36:27,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:27 BoogieIcfgContainer [2022-11-23 15:36:27,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:36:27,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:36:27,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:36:27,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:36:27,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:25" (1/3) ... [2022-11-23 15:36:27,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a00073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:27, skipping insertion in model container [2022-11-23 15:36:27,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:26" (2/3) ... [2022-11-23 15:36:27,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a00073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:27, skipping insertion in model container [2022-11-23 15:36:27,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:27" (3/3) ... [2022-11-23 15:36:27,798 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-11-23 15:36:27,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:36:27,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:36:27,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:36:27,888 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;@66b87eea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:36:27,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:36:27,893 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) [2022-11-23 15:36:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:36:27,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:36:27,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:36:27,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:36:27,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:36:27,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1634006193, now seen corresponding path program 1 times [2022-11-23 15:36:27,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:36:27,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874380257] [2022-11-23 15:36:27,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:36:27,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:36:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:36:28,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:36:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:36:28,172 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:36:28,175 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:36:28,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:36:28,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:36:28,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:36:28,186 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:36:28,191 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:36:28,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:36:28 BoogieIcfgContainer [2022-11-23 15:36:28,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:36:28,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:36:28,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:36:28,233 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:36:28,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:27" (3/4) ... [2022-11-23 15:36:28,238 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:36:28,238 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:36:28,240 INFO L158 Benchmark]: Toolchain (without parser) took 2694.91ms. Allocated memory is still 138.4MB. Free memory was 96.0MB in the beginning and 87.4MB in the end (delta: 8.6MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2022-11-23 15:36:28,240 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:36:28,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1413.78ms. Allocated memory is still 138.4MB. Free memory was 96.0MB in the beginning and 57.1MB in the end (delta: 38.9MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-23 15:36:28,242 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.04ms. Allocated memory is still 138.4MB. Free memory was 57.1MB in the beginning and 53.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:36:28,243 INFO L158 Benchmark]: Boogie Preprocessor took 31.28ms. Allocated memory is still 138.4MB. Free memory was 53.8MB in the beginning and 52.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:36:28,244 INFO L158 Benchmark]: RCFGBuilder took 669.88ms. Allocated memory is still 138.4MB. Free memory was 52.3MB in the beginning and 106.4MB in the end (delta: -54.1MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2022-11-23 15:36:28,244 INFO L158 Benchmark]: TraceAbstraction took 452.02ms. Allocated memory is still 138.4MB. Free memory was 105.5MB in the beginning and 87.4MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 15:36:28,245 INFO L158 Benchmark]: Witness Printer took 5.51ms. Allocated memory is still 138.4MB. Free memory was 87.4MB in the beginning and 87.4MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:36:28,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1413.78ms. Allocated memory is still 138.4MB. Free memory was 96.0MB in the beginning and 57.1MB in the end (delta: 38.9MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.04ms. Allocated memory is still 138.4MB. Free memory was 57.1MB in the beginning and 53.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.28ms. Allocated memory is still 138.4MB. Free memory was 53.8MB in the beginning and 52.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 669.88ms. Allocated memory is still 138.4MB. Free memory was 52.3MB in the beginning and 106.4MB in the end (delta: -54.1MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * TraceAbstraction took 452.02ms. Allocated memory is still 138.4MB. Free memory was 105.5MB in the beginning and 87.4MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.51ms. Allocated memory is still 138.4MB. Free memory was 87.4MB in the beginning and 87.4MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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); [L1575] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1575] RET printLine("Calling bad()...") VAL [#in~argv={1073741832:1073741831}, argc=1073741828, argv={1073741832:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, unknown-#in~argc-unknown=1073741828] [L1576] CALL CWE191_Integer_Underflow__int_fgets_predec_67_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_predec_67_structType myStruct; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569] myStruct.structFirst = data [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_67b_badSink(myStruct) [L1581] EXPR myStruct.structFirst [L1581] int data = myStruct.structFirst; [L1583] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myStruct={6:0}, unknown-#in~myStruct!structFirst-unknown=-2147483648] - UnprovableResult [Line: 1583]: 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 [2022-11-23 15:36:28,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW --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 e1b811ebaac96e30d95d25d077da4e563845fb857f9aa9457153539bb79aef42 --- 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-4e7fbc6 [2022-11-23 15:36:31,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:36:31,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:36:31,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:36:31,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:36:31,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:36:31,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:36:31,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:36:31,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:36:31,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:36:31,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:36:31,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:36:31,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:36:31,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:36:31,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:36:31,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:36:31,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:36:31,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:36:31,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:36:31,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:36:31,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:36:31,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:36:31,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:36:31,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:36:31,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:36:31,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:36:31,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:36:31,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:36:31,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:36:31,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:36:31,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:36:31,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:36:31,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:36:31,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:36:31,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:36:31,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:36:31,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:36:31,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:36:31,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:36:31,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:36:31,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:36:31,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-23 15:36:31,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:36:31,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:36:31,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:36:31,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:36:31,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:36:31,256 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:36:31,256 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:36:31,257 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:36:31,257 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:36:31,257 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:36:31,257 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:36:31,258 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:36:31,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:36:31,259 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:36:31,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:36:31,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:36:31,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:36:31,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:36:31,260 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:36:31,260 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:36:31,261 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:36:31,261 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:36:31,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:36:31,262 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:36:31,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:36:31,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:36:31,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:36:31,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:36:31,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:36:31,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:36:31,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:36:31,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:36:31,264 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:36:31,264 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:36:31,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:36:31,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:36:31,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:36:31,265 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_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1b811ebaac96e30d95d25d077da4e563845fb857f9aa9457153539bb79aef42 [2022-11-23 15:36:31,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:36:31,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:36:31,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:36:31,721 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:36:31,721 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:36:31,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-11-23 15:36:35,194 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:36:35,591 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:36:35,592 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-11-23 15:36:35,611 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/data/0982a1971/266444fed3de47d1856312655982cefd/FLAG3322131a8 [2022-11-23 15:36:35,796 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/data/0982a1971/266444fed3de47d1856312655982cefd [2022-11-23 15:36:35,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:36:35,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:36:35,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:36:35,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:36:35,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:36:35,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:35" (1/1) ... [2022-11-23 15:36:35,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2814a6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:35, skipping insertion in model container [2022-11-23 15:36:35,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:35" (1/1) ... [2022-11-23 15:36:35,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:36:35,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:36:36,319 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:36:36,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:36:36,944 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:36:36,968 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 15:36:37,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:36:37,193 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:36:37,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37 WrapperNode [2022-11-23 15:36:37,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:36:37,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:36:37,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:36:37,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:36:37,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,305 INFO L138 Inliner]: procedures = 506, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2022-11-23 15:36:37,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:36:37,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:36:37,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:36:37,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:36:37,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,365 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:36:37,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:36:37,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:36:37,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:36:37,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (1/1) ... [2022-11-23 15:36:37,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:36:37,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:36:37,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:36:37,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:36:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-23 15:36:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-23 15:36:37,499 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-23 15:36:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:36:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:36:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:36:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:36:37,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:36:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 15:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 15:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-23 15:36:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-23 15:36:37,748 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:36:37,750 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:36:37,991 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:36:37,997 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:36:37,997 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:36:37,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:37 BoogieIcfgContainer [2022-11-23 15:36:38,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:36:38,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:36:38,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:36:38,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:36:38,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:35" (1/3) ... [2022-11-23 15:36:38,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b80f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:38, skipping insertion in model container [2022-11-23 15:36:38,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:37" (2/3) ... [2022-11-23 15:36:38,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b80f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:38, skipping insertion in model container [2022-11-23 15:36:38,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:37" (3/3) ... [2022-11-23 15:36:38,010 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-11-23 15:36:38,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:36:38,031 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 15:36:38,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:36:38,091 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;@64e3e0b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:36:38,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 15:36:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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) [2022-11-23 15:36:38,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:36:38,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:36:38,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:36:38,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-23 15:36:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:36:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-23 15:36:38,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:36:38,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402305172] [2022-11-23 15:36:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:36:38,127 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 [2022-11-23 15:36:38,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:36:38,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:36:38,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:36:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:36:38,379 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:36:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:36:38,495 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 15:36:38,497 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:36:38,506 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-23 15:36:38,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-23 15:36:38,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:36:38,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:36:38,714 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:36:38,719 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:36:38,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:36:38 BoogieIcfgContainer [2022-11-23 15:36:38,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:36:38,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:36:38,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:36:38,752 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:36:38,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:37" (3/4) ... [2022-11-23 15:36:38,756 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:36:38,757 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:36:38,758 INFO L158 Benchmark]: Toolchain (without parser) took 2956.69ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 35.8MB in the beginning and 40.3MB in the end (delta: -4.5MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-11-23 15:36:38,759 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:36:38,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1389.64ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 35.6MB in the beginning and 39.7MB in the end (delta: -4.1MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2022-11-23 15:36:38,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.74ms. Allocated memory is still 79.7MB. Free memory was 39.7MB in the beginning and 36.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:36:38,761 INFO L158 Benchmark]: Boogie Preprocessor took 73.84ms. Allocated memory is still 79.7MB. Free memory was 36.5MB in the beginning and 34.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:36:38,762 INFO L158 Benchmark]: RCFGBuilder took 618.43ms. Allocated memory is still 79.7MB. Free memory was 34.4MB in the beginning and 39.7MB in the end (delta: -5.2MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2022-11-23 15:36:38,762 INFO L158 Benchmark]: TraceAbstraction took 748.80ms. Allocated memory is still 79.7MB. Free memory was 38.8MB in the beginning and 40.7MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:36:38,763 INFO L158 Benchmark]: Witness Printer took 5.22ms. Allocated memory is still 79.7MB. Free memory was 40.7MB in the beginning and 40.3MB in the end (delta: 422.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:36:38,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1389.64ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 35.6MB in the beginning and 39.7MB in the end (delta: -4.1MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 110.74ms. Allocated memory is still 79.7MB. Free memory was 39.7MB in the beginning and 36.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.84ms. Allocated memory is still 79.7MB. Free memory was 36.5MB in the beginning and 34.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.43ms. Allocated memory is still 79.7MB. Free memory was 34.4MB in the beginning and 39.7MB in the end (delta: -5.2MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * TraceAbstraction took 748.80ms. Allocated memory is still 79.7MB. Free memory was 38.8MB in the beginning and 40.7MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.22ms. Allocated memory is still 79.7MB. Free memory was 40.7MB in the beginning and 40.3MB in the end (delta: 422.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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] [L1575] CALL printLine("Calling bad()...") VAL [#in~line={4:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1575] RET printLine("Calling bad()...") VAL [#in~argv={13:12}, argc=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, unknown-#in~argc-unknown=12] [L1576] CALL CWE191_Integer_Underflow__int_fgets_predec_67_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_predec_67_structType myStruct; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569] myStruct.structFirst = data [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_67b_badSink(myStruct) [L1581] EXPR myStruct.structFirst [L1581] int data = myStruct.structFirst; [L1583] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myStruct={7:0}, unknown-#in~myStruct!structFirst-unknown=-2147483648] - UnprovableResult [Line: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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=23occurred 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, 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 [2022-11-23 15:36:38,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dbbce89-55a5-42b5-bea2-68031dc7ae69/bin/utaipan-Q6hlc19bkW/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