./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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_a6dfec42-2d81-4293-9875-ae3172ff0050/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 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 --- 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 08:52:38,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:52:38,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:52:38,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:52:38,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:52:38,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:52:38,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:52:38,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:52:38,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:52:38,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:52:38,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:52:38,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:52:38,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:52:38,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:52:38,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:52:38,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:52:38,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:52:38,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:52:38,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:52:38,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:52:38,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:52:38,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:52:38,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:52:38,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:52:38,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:52:38,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:52:38,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:52:38,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:52:38,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:52:38,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:52:38,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:52:38,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:52:38,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:52:38,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:52:38,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:52:38,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:52:38,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:52:38,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:52:38,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:52:38,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:52:38,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:52:38,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 08:52:38,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:52:38,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:52:38,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:52:38,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:52:38,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:52:38,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:52:38,203 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:52:38,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:52:38,204 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:52:38,204 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:52:38,204 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:52:38,204 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:52:38,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:52:38,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:52:38,204 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:52:38,204 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:52:38,204 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:52:38,204 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:52:38,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:52:38,205 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:52:38,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:52:38,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:52:38,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:52:38,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:52:38,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:52:38,206 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 08:52:38,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:52:38,206 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:52:38,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:52:38,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:52:38,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:52:38,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:38,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:52:38,206 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:52:38,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:52:38,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:52:38,207 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:52:38,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:52:38,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:52:38,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:52:38,207 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_a6dfec42-2d81-4293-9875-ae3172ff0050/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 [2022-12-14 08:52:38,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:52:38,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:52:38,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:52:38,405 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:52:38,405 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:52:38,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-12-14 08:52:40,982 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:52:41,329 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:52:41,330 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-12-14 08:52:41,343 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/data/5d0d1049b/37a53690a49f49cf8391c454c60edbb3/FLAG37ac3dad9 [2022-12-14 08:52:41,354 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/data/5d0d1049b/37a53690a49f49cf8391c454c60edbb3 [2022-12-14 08:52:41,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:52:41,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:52:41,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:52:41,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:52:41,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:52:41,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:52:41" (1/1) ... [2022-12-14 08:52:41,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@410d47a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:41, skipping insertion in model container [2022-12-14 08:52:41,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:52:41" (1/1) ... [2022-12-14 08:52:41,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:52:41,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:52:41,650 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:52:41,938 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:41,943 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:52:41,944 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:52:41,946 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:52:41,946 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:52:41,963 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:52:41,967 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:52:41,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:52:41,976 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:52:41,989 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:52:42,020 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:42,021 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:52:42,022 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:52:42,023 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:52:42,024 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:52:42,027 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:52:42,028 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:52:42,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:52:42,122 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:52:42,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42 WrapperNode [2022-12-14 08:52:42,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:52:42,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:52:42,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:52:42,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:52:42,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,171 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-12-14 08:52:42,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:52:42,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:52:42,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:52:42,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:52:42,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,188 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:52:42,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:52:42,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:52:42,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:52:42,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (1/1) ... [2022-12-14 08:52:42,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:42,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:42,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:52:42,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:52:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 08:52:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 08:52:42,250 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 08:52:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:52:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 08:52:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:52:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:52:42,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:52:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:52:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 08:52:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:52:42,361 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:52:42,363 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:52:42,459 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:52:42,480 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:52:42,480 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 08:52:42,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:42 BoogieIcfgContainer [2022-12-14 08:52:42,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:52:42,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:52:42,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:52:42,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:52:42,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:52:41" (1/3) ... [2022-12-14 08:52:42,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c32f3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:52:42, skipping insertion in model container [2022-12-14 08:52:42,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:42" (2/3) ... [2022-12-14 08:52:42,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c32f3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:52:42, skipping insertion in model container [2022-12-14 08:52:42,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:42" (3/3) ... [2022-12-14 08:52:42,488 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-12-14 08:52:42,502 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:52:42,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 08:52:42,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:52:42,540 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;@3bdfe1a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:52:42,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 08:52:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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 08:52:42,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:52:42,549 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:42,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:42,550 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:52:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2022-12-14 08:52:42,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:42,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309705613] [2022-12-14 08:52:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:42,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:52:42,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:42,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309705613] [2022-12-14 08:52:42,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309705613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:52:42,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:52:42,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:52:42,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135204147] [2022-12-14 08:52:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:42,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:42,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:42,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:42,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:52:42,773 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:52:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:42,804 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-12-14 08:52:42,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:42,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2022-12-14 08:52:42,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:42,810 INFO L225 Difference]: With dead ends: 29 [2022-12-14 08:52:42,810 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 08:52:42,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:52:42,814 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:42,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:52:42,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 08:52:42,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 08:52:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 08:52:42,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-12-14 08:52:42,838 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-12-14 08:52:42,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:42,839 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-12-14 08:52:42,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:52:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-12-14 08:52:42,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 08:52:42,840 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:42,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:42,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:52:42,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:52:42,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:42,841 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2022-12-14 08:52:42,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:42,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763131160] [2022-12-14 08:52:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:42,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:52:42,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:52:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:52:42,896 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 08:52:42,896 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:52:42,897 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 08:52:42,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 08:52:42,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:52:42,902 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 08:52:42,904 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:52:42,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:52:42 BoogieIcfgContainer [2022-12-14 08:52:42,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:52:42,920 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:52:42,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:52:42,920 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:52:42,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:42" (3/4) ... [2022-12-14 08:52:42,923 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:52:42,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:52:42,923 INFO L158 Benchmark]: Toolchain (without parser) took 1566.21ms. Allocated memory is still 144.7MB. Free memory was 105.1MB in the beginning and 92.5MB in the end (delta: 12.6MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2022-12-14 08:52:42,924 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 119.5MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:52:42,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 764.81ms. Allocated memory is still 144.7MB. Free memory was 105.1MB in the beginning and 88.5MB in the end (delta: 16.6MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2022-12-14 08:52:42,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.41ms. Allocated memory is still 144.7MB. Free memory was 88.5MB in the beginning and 85.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:52:42,925 INFO L158 Benchmark]: Boogie Preprocessor took 18.19ms. Allocated memory is still 144.7MB. Free memory was 85.5MB in the beginning and 84.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:52:42,925 INFO L158 Benchmark]: RCFGBuilder took 291.62ms. Allocated memory is still 144.7MB. Free memory was 84.3MB in the beginning and 69.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 08:52:42,925 INFO L158 Benchmark]: TraceAbstraction took 435.39ms. Allocated memory is still 144.7MB. Free memory was 69.6MB in the beginning and 92.5MB in the end (delta: -22.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:52:42,925 INFO L158 Benchmark]: Witness Printer took 3.13ms. Allocated memory is still 144.7MB. Free memory is still 92.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:52:42,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 119.5MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 764.81ms. Allocated memory is still 144.7MB. Free memory was 105.1MB in the beginning and 88.5MB in the end (delta: 16.6MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.41ms. Allocated memory is still 144.7MB. Free memory was 88.5MB in the beginning and 85.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.19ms. Allocated memory is still 144.7MB. Free memory was 85.5MB in the beginning and 84.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.62ms. Allocated memory is still 144.7MB. Free memory was 84.3MB in the beginning and 69.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 435.39ms. Allocated memory is still 144.7MB. Free memory was 69.6MB in the beginning and 92.5MB in the end (delta: -22.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.13ms. Allocated memory is still 144.7MB. Free memory is still 92.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_FIVE = 5; [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}, STATIC_CONST_FIVE=5] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_postdec_06_bad() [L1551] int data; [L1552] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1567] COND TRUE STATIC_CONST_FIVE==5 [L1570] data-- VAL [data=-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, STATIC_CONST_FIVE=5] - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 14 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 08:52:42,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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_a6dfec42-2d81-4293-9875-ae3172ff0050/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 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 --- 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 08:52:44,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:52:44,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:52:44,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:52:44,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:52:44,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:52:44,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:52:44,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:52:44,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:52:44,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:52:44,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:52:44,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:52:44,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:52:44,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:52:44,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:52:44,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:52:44,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:52:44,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:52:44,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:52:44,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:52:44,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:52:44,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:52:44,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:52:44,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:52:44,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:52:44,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:52:44,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:52:44,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:52:44,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:52:44,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:52:44,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:52:44,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:52:44,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:52:44,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:52:44,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:52:44,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:52:44,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:52:44,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:52:44,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:52:44,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:52:44,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:52:44,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 08:52:44,596 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:52:44,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:52:44,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:52:44,596 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:52:44,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:52:44,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:52:44,597 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:52:44,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:52:44,597 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:52:44,597 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:52:44,598 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:52:44,598 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:52:44,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:52:44,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:52:44,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:52:44,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:52:44,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:52:44,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:52:44,599 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:52:44,599 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:52:44,600 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 08:52:44,600 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:52:44,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:52:44,600 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:52:44,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:52:44,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:44,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:52:44,602 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:52:44,602 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:52:44,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:52:44,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:52:44,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:52:44,602 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_a6dfec42-2d81-4293-9875-ae3172ff0050/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 [2022-12-14 08:52:44,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:52:44,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:52:44,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:52:44,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:52:44,824 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:52:44,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-12-14 08:52:47,389 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:52:47,604 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:52:47,604 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-12-14 08:52:47,617 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/data/9a2672f8e/6d1fa0428b8c49bcaf7a91954fea716d/FLAG60374501f [2022-12-14 08:52:47,631 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/data/9a2672f8e/6d1fa0428b8c49bcaf7a91954fea716d [2022-12-14 08:52:47,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:52:47,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:52:47,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:52:47,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:52:47,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:52:47,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:52:47" (1/1) ... [2022-12-14 08:52:47,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fabdf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:47, skipping insertion in model container [2022-12-14 08:52:47,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:52:47" (1/1) ... [2022-12-14 08:52:47,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:52:47,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:52:47,955 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:52:48,211 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,215 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:52:48,216 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:52:48,218 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:52:48,218 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:52:48,231 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:52:48,235 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:52:48,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:52:48,247 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:52:48,260 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:52:48,298 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,299 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:52:48,300 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:52:48,301 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:52:48,302 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:52:48,304 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:52:48,306 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:52:48,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:52:48,397 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:52:48,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48 WrapperNode [2022-12-14 08:52:48,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:52:48,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:52:48,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:52:48,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:52:48,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,435 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-12-14 08:52:48,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:52:48,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:52:48,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:52:48,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:52:48,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,453 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:52:48,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:52:48,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:52:48,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:52:48,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:48,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:48,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:52:48,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:52:48,515 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 08:52:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 08:52:48,516 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 08:52:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:52:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 08:52:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:52:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:52:48,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:52:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:52:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 08:52:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 08:52:48,640 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:52:48,641 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:52:48,762 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:52:48,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:52:48,768 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 08:52:48,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:48 BoogieIcfgContainer [2022-12-14 08:52:48,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:52:48,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:52:48,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:52:48,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:52:48,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:52:47" (1/3) ... [2022-12-14 08:52:48,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab05ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:52:48, skipping insertion in model container [2022-12-14 08:52:48,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (2/3) ... [2022-12-14 08:52:48,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab05ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:52:48, skipping insertion in model container [2022-12-14 08:52:48,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:48" (3/3) ... [2022-12-14 08:52:48,778 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-12-14 08:52:48,796 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:52:48,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 08:52:48,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:52:48,835 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;@3de221ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:52:48,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 08:52:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 08:52:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 08:52:48,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:48,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:48,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:52:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:48,850 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-12-14 08:52:48,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:52:48,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568048548] [2022-12-14 08:52:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:48,860 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 08:52:48,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:52:48,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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 08:52:48,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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 08:52:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:48,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:52:48,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:52:49,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:52:49,037 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:52:49,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568048548] [2022-12-14 08:52:49,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568048548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:52:49,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:52:49,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:52:49,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128521277] [2022-12-14 08:52:49,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:49,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:49,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:52:49,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:49,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:52:49,075 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:52:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:49,104 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-12-14 08:52:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:49,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-12-14 08:52:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:49,113 INFO L225 Difference]: With dead ends: 39 [2022-12-14 08:52:49,113 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 08:52:49,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:52:49,118 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:49,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:52:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 08:52:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 08:52:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 08:52:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-14 08:52:49,145 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-12-14 08:52:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:49,146 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-14 08:52:49,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 08:52:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-14 08:52:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 08:52:49,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:49,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:49,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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 08:52:49,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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 08:52:49,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:52:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-12-14 08:52:49,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:52:49,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121908700] [2022-12-14 08:52:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:49,350 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 08:52:49,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:52:49,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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 08:52:49,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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 (3)] Waiting until timeout for monitored process [2022-12-14 08:52:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:52:49,423 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:52:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:52:49,472 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 08:52:49,472 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:52:49,474 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 08:52:49,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 08:52:49,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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 (3)] Ended with exit code 0 [2022-12-14 08:52:49,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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 08:52:49,685 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 08:52:49,695 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:52:49,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:52:49 BoogieIcfgContainer [2022-12-14 08:52:49,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:52:49,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:52:49,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:52:49,755 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:52:49,755 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:48" (3/4) ... [2022-12-14 08:52:49,758 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:52:49,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:52:49,759 INFO L158 Benchmark]: Toolchain (without parser) took 2123.73ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 38.2MB in the beginning and 27.3MB in the end (delta: 10.9MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2022-12-14 08:52:49,759 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 48.2MB. Free memory was 26.5MB in the beginning and 26.4MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:52:49,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 761.84ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 38.0MB in the beginning and 38.8MB in the end (delta: -782.7kB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2022-12-14 08:52:49,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.65ms. Allocated memory is still 75.5MB. Free memory was 38.8MB in the beginning and 35.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:52:49,761 INFO L158 Benchmark]: Boogie Preprocessor took 20.26ms. Allocated memory is still 75.5MB. Free memory was 35.7MB in the beginning and 33.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:52:49,761 INFO L158 Benchmark]: RCFGBuilder took 313.49ms. Allocated memory is still 75.5MB. Free memory was 33.6MB in the beginning and 37.0MB in the end (delta: -3.4MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2022-12-14 08:52:49,762 INFO L158 Benchmark]: TraceAbstraction took 981.36ms. Allocated memory is still 75.5MB. Free memory was 36.8MB in the beginning and 27.7MB in the end (delta: 9.1MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-12-14 08:52:49,763 INFO L158 Benchmark]: Witness Printer took 4.05ms. Allocated memory is still 75.5MB. Free memory was 27.7MB in the beginning and 27.3MB in the end (delta: 433.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:52:49,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 48.2MB. Free memory was 26.5MB in the beginning and 26.4MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 761.84ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 38.0MB in the beginning and 38.8MB in the end (delta: -782.7kB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.65ms. Allocated memory is still 75.5MB. Free memory was 38.8MB in the beginning and 35.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.26ms. Allocated memory is still 75.5MB. Free memory was 35.7MB in the beginning and 33.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.49ms. Allocated memory is still 75.5MB. Free memory was 33.6MB in the beginning and 37.0MB in the end (delta: -3.4MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * TraceAbstraction took 981.36ms. Allocated memory is still 75.5MB. Free memory was 36.8MB in the beginning and 27.7MB in the end (delta: 9.1MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Witness Printer took 4.05ms. Allocated memory is still 75.5MB. Free memory was 27.7MB in the beginning and 27.3MB in the end (delta: 433.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_FIVE = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}, STATIC_CONST_FIVE=5] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_postdec_06_bad() [L1551] int data; [L1552] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1567] COND TRUE STATIC_CONST_FIVE==5 [L1570] data-- VAL [data=-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, STATIC_CONST_FIVE=5] - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 08:52:49,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6dfec42-2d81-4293-9875-ae3172ff0050/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