./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:08:14,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:08:14,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:08:14,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:08:14,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:08:14,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:08:14,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:08:14,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:08:14,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:08:14,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:08:14,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:08:14,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:08:14,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:08:14,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:08:14,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:08:14,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:08:14,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:08:14,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:08:14,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:08:14,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:08:14,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:08:14,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:08:14,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:08:14,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:08:14,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:08:14,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:08:14,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:08:14,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:08:14,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:08:14,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:08:14,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:08:14,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:08:14,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:08:14,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:08:14,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:08:14,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:08:14,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:08:14,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:08:14,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:08:14,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:08:14,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:08:14,213 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 10:08:14,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:08:14,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:08:14,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:08:14,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:08:14,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:08:14,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:08:14,236 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:08:14,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:08:14,237 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:08:14,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:08:14,237 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:08:14,237 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:08:14,237 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:08:14,237 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:08:14,238 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:08:14,238 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:08:14,238 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:08:14,238 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:08:14,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:08:14,239 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:08:14,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:08:14,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:08:14,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:08:14,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:08:14,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:08:14,240 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:08:14,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:08:14,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:08:14,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:08:14,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:08:14,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:08:14,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:08:14,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:08:14,241 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:08:14,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:08:14,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:08:14,242 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:08:14,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:08:14,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:08:14,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:08:14,242 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_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 [2022-12-14 10:08:14,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:08:14,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:08:14,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:08:14,446 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:08:14,446 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:08:14,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-14 10:08:16,995 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:08:17,246 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:08:17,247 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-14 10:08:17,265 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/data/9e2e488e3/5ba957d9823a432d9cf3f155b195ad0d/FLAG2e7dbbe7e [2022-12-14 10:08:17,277 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/data/9e2e488e3/5ba957d9823a432d9cf3f155b195ad0d [2022-12-14 10:08:17,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:08:17,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:08:17,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:08:17,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:08:17,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:08:17,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:08:17" (1/1) ... [2022-12-14 10:08:17,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a36070f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:17, skipping insertion in model container [2022-12-14 10:08:17,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:08:17" (1/1) ... [2022-12-14 10:08:17,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:08:17,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:08:17,576 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:08:17,891 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:08:17,896 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:08:17,898 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:08:17,900 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:08:17,901 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:08:17,921 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:08:17,928 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:08:17,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:08:17,939 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:08:17,957 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:08:18,005 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:08:18,007 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:08:18,008 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:08:18,010 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:08:18,011 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:08:18,016 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:08:18,018 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:08:18,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:08:18,105 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:08:18,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18 WrapperNode [2022-12-14 10:08:18,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:08:18,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:08:18,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:08:18,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:08:18,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,141 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2022-12-14 10:08:18,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:08:18,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:08:18,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:08:18,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:08:18,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:08:18,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:08:18,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:08:18,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:08:18,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (1/1) ... [2022-12-14 10:08:18,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:08:18,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:08:18,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:08:18,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:08:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 10:08:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 10:08:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 10:08:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:08:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 10:08:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:08:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:08:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:08:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:08:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 10:08:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:08:18,330 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:08:18,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:08:18,431 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:08:18,455 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:08:18,455 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:08:18,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:08:18 BoogieIcfgContainer [2022-12-14 10:08:18,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:08:18,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:08:18,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:08:18,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:08:18,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:08:17" (1/3) ... [2022-12-14 10:08:18,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b3513b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:08:18, skipping insertion in model container [2022-12-14 10:08:18,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:18" (2/3) ... [2022-12-14 10:08:18,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b3513b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:08:18, skipping insertion in model container [2022-12-14 10:08:18,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:08:18" (3/3) ... [2022-12-14 10:08:18,463 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-14 10:08:18,477 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:08:18,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:08:18,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:08:18,518 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;@2d2bbffd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:08:18,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:08:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:08:18,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:08:18,527 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:08:18,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:08:18,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:08:18,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:08:18,532 INFO L85 PathProgramCache]: Analyzing trace with hash 108804888, now seen corresponding path program 1 times [2022-12-14 10:08:18,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:08:18,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090685711] [2022-12-14 10:08:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:08:18,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:08:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:08:18,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:08:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:08:18,685 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:08:18,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:08:18,689 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 10:08:18,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 10:08:18,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:08:18,696 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 10:08:18,700 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:08:18,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:08:18 BoogieIcfgContainer [2022-12-14 10:08:18,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:08:18,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:08:18,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:08:18,722 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:08:18,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:08:18" (3/4) ... [2022-12-14 10:08:18,726 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:08:18,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:08:18,727 INFO L158 Benchmark]: Toolchain (without parser) took 1446.21ms. Allocated memory is still 157.3MB. Free memory was 119.4MB in the beginning and 120.9MB in the end (delta: -1.5MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2022-12-14 10:08:18,727 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:08:18,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 823.79ms. Allocated memory is still 157.3MB. Free memory was 119.4MB in the beginning and 98.0MB in the end (delta: 21.4MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2022-12-14 10:08:18,728 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.97ms. Allocated memory is still 157.3MB. Free memory was 98.0MB in the beginning and 94.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 10:08:18,729 INFO L158 Benchmark]: Boogie Preprocessor took 17.57ms. Allocated memory is still 157.3MB. Free memory was 94.6MB in the beginning and 93.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:08:18,729 INFO L158 Benchmark]: RCFGBuilder took 296.67ms. Allocated memory is still 157.3MB. Free memory was 93.3MB in the beginning and 78.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 10:08:18,730 INFO L158 Benchmark]: TraceAbstraction took 263.28ms. Allocated memory is still 157.3MB. Free memory was 77.8MB in the beginning and 120.9MB in the end (delta: -43.1MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2022-12-14 10:08:18,730 INFO L158 Benchmark]: Witness Printer took 3.87ms. Allocated memory is still 157.3MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:08:18,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 51.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 823.79ms. Allocated memory is still 157.3MB. Free memory was 119.4MB in the beginning and 98.0MB in the end (delta: 21.4MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.97ms. Allocated memory is still 157.3MB. Free memory was 98.0MB in the beginning and 94.6MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.57ms. Allocated memory is still 157.3MB. Free memory was 94.6MB in the beginning and 93.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 296.67ms. Allocated memory is still 157.3MB. Free memory was 93.3MB in the beginning and 78.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 263.28ms. Allocated memory is still 157.3MB. Free memory was 77.8MB in the beginning and 120.9MB in the end (delta: -43.1MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 3.87ms. Allocated memory is still 157.3MB. Free memory is still 120.9MB. 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1554. 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); [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [\old(argc)=1073741826, argc=1073741826, argv={1073741829:1073741827}, argv={1073741829:1073741827}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_predec_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] data = atoi(inputBuffer) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561] return data; [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1569] --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] - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:08:18,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:08:20,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:08:20,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:08:20,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:08:20,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:08:20,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:08:20,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:08:20,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:08:20,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:08:20,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:08:20,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:08:20,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:08:20,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:08:20,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:08:20,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:08:20,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:08:20,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:08:20,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:08:20,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:08:20,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:08:20,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:08:20,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:08:20,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:08:20,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:08:20,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:08:20,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:08:20,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:08:20,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:08:20,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:08:20,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:08:20,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:08:20,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:08:20,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:08:20,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:08:20,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:08:20,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:08:20,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:08:20,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:08:20,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:08:20,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:08:20,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:08:20,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 10:08:20,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:08:20,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:08:20,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:08:20,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:08:20,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:08:20,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:08:20,475 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:08:20,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:08:20,475 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:08:20,475 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:08:20,475 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:08:20,476 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:08:20,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:08:20,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:08:20,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:08:20,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:08:20,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:08:20,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:08:20,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:08:20,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:08:20,478 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:08:20,478 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:08:20,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:08:20,478 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:08:20,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:08:20,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:08:20,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:08:20,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:08:20,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:08:20,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:08:20,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:08:20,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:08:20,480 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:08:20,480 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:08:20,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:08:20,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:08:20,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:08:20,480 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_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19fc8183fba1eb121ee525b760bdb774d06d6b4ae769602452066aa7d1005c34 [2022-12-14 10:08:20,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:08:20,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:08:20,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:08:20,718 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:08:20,718 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:08:20,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-14 10:08:23,360 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:08:23,572 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:08:23,572 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-14 10:08:23,585 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/data/55ec2cdf4/5accd3754fca47259760b4c9ade85a07/FLAGa1f674826 [2022-12-14 10:08:23,596 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/data/55ec2cdf4/5accd3754fca47259760b4c9ade85a07 [2022-12-14 10:08:23,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:08:23,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:08:23,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:08:23,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:08:23,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:08:23,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:08:23" (1/1) ... [2022-12-14 10:08:23,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec1ab93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:23, skipping insertion in model container [2022-12-14 10:08:23,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:08:23" (1/1) ... [2022-12-14 10:08:23,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:08:23,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:08:23,880 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:08:24,243 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:08:24,248 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:08:24,249 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:08:24,251 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:08:24,252 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:08:24,268 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:08:24,274 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:08:24,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:08:24,287 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:08:24,305 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:08:24,357 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:08:24,359 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:08:24,360 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:08:24,362 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:08:24,363 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:08:24,367 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:08:24,369 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:08:24,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:08:24,505 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:08:24,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24 WrapperNode [2022-12-14 10:08:24,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:08:24,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:08:24,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:08:24,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:08:24,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,560 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-12-14 10:08:24,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:08:24,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:08:24,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:08:24,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:08:24,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,586 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:08:24,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:08:24,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:08:24,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:08:24,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (1/1) ... [2022-12-14 10:08:24,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:08:24,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:08:24,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:08:24,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:08:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 10:08:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 10:08:24,658 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 10:08:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:08:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:08:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:08:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:08:24,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:08:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:08:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 10:08:24,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 10:08:24,780 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:08:24,782 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:08:24,902 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:08:24,908 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:08:24,908 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:08:24,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:08:24 BoogieIcfgContainer [2022-12-14 10:08:24,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:08:24,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:08:24,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:08:24,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:08:24,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:08:23" (1/3) ... [2022-12-14 10:08:24,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798af861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:08:24, skipping insertion in model container [2022-12-14 10:08:24,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:08:24" (2/3) ... [2022-12-14 10:08:24,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798af861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:08:24, skipping insertion in model container [2022-12-14 10:08:24,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:08:24" (3/3) ... [2022-12-14 10:08:24,918 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_42_bad.i [2022-12-14 10:08:24,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:08:24,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:08:24,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:08:24,984 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;@6f8dc31d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:08:24,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:08:24,987 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) [2022-12-14 10:08:24,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:08:24,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:08:24,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:08:24,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:08:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:08:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2022-12-14 10:08:25,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:08:25,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617830980] [2022-12-14 10:08:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:08:25,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:08:25,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:08:25,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:08:25,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 10:08:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:08:25,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:08:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:08:25,208 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 10:08:25,210 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:08:25,211 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 10:08:25,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 10:08:25,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:08:25,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:08:25,418 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 10:08:25,422 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:08:25,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:08:25 BoogieIcfgContainer [2022-12-14 10:08:25,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:08:25,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:08:25,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:08:25,446 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:08:25,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:08:24" (3/4) ... [2022-12-14 10:08:25,449 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:08:25,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:08:25,451 INFO L158 Benchmark]: Toolchain (without parser) took 1851.43ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 54.0MB in the beginning and 54.1MB in the end (delta: -136.3kB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-12-14 10:08:25,451 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory was 31.2MB in the beginning and 31.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:08:25,452 INFO L158 Benchmark]: CACSL2BoogieTranslator took 906.35ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 53.8MB in the beginning and 64.9MB in the end (delta: -11.1MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2022-12-14 10:08:25,452 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.45ms. Allocated memory is still 96.5MB. Free memory was 64.9MB in the beginning and 61.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 10:08:25,453 INFO L158 Benchmark]: Boogie Preprocessor took 30.59ms. Allocated memory is still 96.5MB. Free memory was 61.7MB in the beginning and 59.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:08:25,453 INFO L158 Benchmark]: RCFGBuilder took 318.29ms. Allocated memory is still 96.5MB. Free memory was 59.7MB in the beginning and 45.5MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 10:08:25,454 INFO L158 Benchmark]: TraceAbstraction took 532.52ms. Allocated memory is still 96.5MB. Free memory was 44.5MB in the beginning and 54.8MB in the end (delta: -10.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:08:25,454 INFO L158 Benchmark]: Witness Printer took 4.19ms. Allocated memory is still 96.5MB. Free memory was 54.8MB in the beginning and 54.1MB in the end (delta: 666.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:08:25,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory was 31.2MB in the beginning and 31.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 906.35ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 53.8MB in the beginning and 64.9MB in the end (delta: -11.1MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.45ms. Allocated memory is still 96.5MB. Free memory was 64.9MB in the beginning and 61.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.59ms. Allocated memory is still 96.5MB. Free memory was 61.7MB in the beginning and 59.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 318.29ms. Allocated memory is still 96.5MB. Free memory was 59.7MB in the beginning and 45.5MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 532.52ms. Allocated memory is still 96.5MB. Free memory was 44.5MB in the beginning and 54.8MB in the end (delta: -10.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.19ms. Allocated memory is still 96.5MB. Free memory was 54.8MB in the beginning and 54.1MB in the end (delta: 666.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1554. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_predec_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] data = atoi(inputBuffer) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561] return data; VAL [\old(data)=0, \result=-2147483648, 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] [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1569] --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] - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:08:25,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48cf4c74-817e-4431-8d79-4c384d8431d1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample