./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/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_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/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_f2c0b580-43fd-4a71-b1df-c646a6221ef1/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 2cfcdf9a23c3aff1299e58ae710f9b2e69c51ca6676ee742443a89d14241bc80 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:20:06,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:20:06,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:20:06,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:20:06,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:20:06,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:20:06,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:20:06,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:20:06,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:20:06,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:20:06,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:20:06,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:20:06,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:20:06,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:20:06,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:20:06,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:20:06,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:20:06,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:20:06,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:20:06,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:20:06,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:20:06,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:20:06,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:20:06,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:20:06,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:20:06,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:20:06,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:20:06,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:20:06,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:20:06,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:20:06,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:20:06,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:20:06,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:20:06,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:20:06,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:20:06,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:20:06,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:20:06,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:20:06,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:20:06,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:20:06,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:20:06,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 10:20:06,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:20:06,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:20:06,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:20:06,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:20:06,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:20:06,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:20:06,190 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:20:06,191 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:20:06,191 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:20:06,191 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:20:06,191 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:20:06,191 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:20:06,192 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:20:06,192 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:20:06,192 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:20:06,192 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:20:06,192 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:20:06,192 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:20:06,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:20:06,193 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:20:06,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:20:06,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:20:06,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:20:06,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:20:06,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:20:06,194 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:20:06,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:20:06,194 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:20:06,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:20:06,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:20:06,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:20:06,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:20:06,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:20:06,195 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:20:06,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:20:06,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:20:06,196 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:20:06,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:20:06,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:20:06,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:20:06,196 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_f2c0b580-43fd-4a71-b1df-c646a6221ef1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cfcdf9a23c3aff1299e58ae710f9b2e69c51ca6676ee742443a89d14241bc80 [2022-12-14 10:20:06,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:20:06,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:20:06,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:20:06,404 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:20:06,404 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:20:06,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-12-14 10:20:08,941 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:20:09,146 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:20:09,147 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-12-14 10:20:09,160 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/data/ccb0a7c86/7e0757458a2d48da83ca2dc39b54d4cc/FLAGc7ec9afc4 [2022-12-14 10:20:09,171 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/data/ccb0a7c86/7e0757458a2d48da83ca2dc39b54d4cc [2022-12-14 10:20:09,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:20:09,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:20:09,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:20:09,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:20:09,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:20:09,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b7208f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09, skipping insertion in model container [2022-12-14 10:20:09,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:20:09,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:20:09,454 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:20:09,726 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:20:09,730 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:20:09,732 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:20:09,733 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:20:09,734 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:20:09,749 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:20:09,753 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:20:09,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:20:09,761 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:20:09,775 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:20:09,808 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:20:09,809 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:20:09,810 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:20:09,812 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:20:09,812 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:20:09,816 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:20:09,817 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:20:09,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:20:09,900 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:20:09,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09 WrapperNode [2022-12-14 10:20:09,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:20:09,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:20:09,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:20:09,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:20:09,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,944 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-14 10:20:09,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:20:09,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:20:09,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:20:09,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:20:09,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,966 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:20:09,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:20:09,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:20:09,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:20:09,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (1/1) ... [2022-12-14 10:20:09,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:20:09,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:20:09,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:20:10,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:20:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 10:20:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 10:20:10,033 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 10:20:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:20:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 10:20:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:20:10,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:20:10,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:20:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:20:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 10:20:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:20:10,136 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:20:10,138 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:20:10,230 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:20:10,263 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:20:10,263 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:20:10,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:20:10 BoogieIcfgContainer [2022-12-14 10:20:10,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:20:10,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:20:10,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:20:10,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:20:10,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:20:09" (1/3) ... [2022-12-14 10:20:10,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f837ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:20:10, skipping insertion in model container [2022-12-14 10:20:10,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:09" (2/3) ... [2022-12-14 10:20:10,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f837ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:20:10, skipping insertion in model container [2022-12-14 10:20:10,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:20:10" (3/3) ... [2022-12-14 10:20:10,271 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-12-14 10:20:10,285 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:20:10,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:20:10,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:20:10,325 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;@4182dfd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:20:10,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:20:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:20:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 10:20:10,334 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:20:10,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:20:10,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:20:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:20:10,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1607565872, now seen corresponding path program 1 times [2022-12-14 10:20:10,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:20:10,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358324298] [2022-12-14 10:20:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:20:10,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:20:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:20:10,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:20:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:20:10,493 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:20:10,495 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:20:10,496 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 10:20:10,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 10:20:10,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:20:10,501 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 10:20:10,504 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:20:10,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:20:10 BoogieIcfgContainer [2022-12-14 10:20:10,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:20:10,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:20:10,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:20:10,520 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:20:10,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:20:10" (3/4) ... [2022-12-14 10:20:10,523 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:20:10,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:20:10,524 INFO L158 Benchmark]: Toolchain (without parser) took 1350.40ms. Allocated memory is still 136.3MB. Free memory was 93.8MB in the beginning and 95.3MB in the end (delta: -1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:20:10,524 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:20:10,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 726.44ms. Allocated memory is still 136.3MB. Free memory was 93.8MB in the beginning and 80.2MB in the end (delta: 13.6MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2022-12-14 10:20:10,525 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.94ms. Allocated memory is still 136.3MB. Free memory was 80.2MB in the beginning and 77.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:20:10,525 INFO L158 Benchmark]: Boogie Preprocessor took 24.70ms. Allocated memory is still 136.3MB. Free memory was 77.4MB in the beginning and 75.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:20:10,526 INFO L158 Benchmark]: RCFGBuilder took 295.05ms. Allocated memory is still 136.3MB. Free memory was 75.9MB in the beginning and 61.3MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 10:20:10,526 INFO L158 Benchmark]: TraceAbstraction took 252.93ms. Allocated memory is still 136.3MB. Free memory was 60.7MB in the beginning and 96.1MB in the end (delta: -35.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:20:10,526 INFO L158 Benchmark]: Witness Printer took 3.19ms. Allocated memory is still 136.3MB. Free memory was 96.1MB in the beginning and 95.3MB in the end (delta: 793.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:20:10,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 726.44ms. Allocated memory is still 136.3MB. Free memory was 93.8MB in the beginning and 80.2MB in the end (delta: 13.6MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.94ms. Allocated memory is still 136.3MB. Free memory was 80.2MB in the beginning and 77.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.70ms. Allocated memory is still 136.3MB. Free memory was 77.4MB in the beginning and 75.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 295.05ms. Allocated memory is still 136.3MB. Free memory was 75.9MB in the beginning and 61.3MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 252.93ms. Allocated memory is still 136.3MB. Free memory was 60.7MB in the beginning and 96.1MB in the end (delta: -35.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.19ms. Allocated memory is still 136.3MB. Free memory was 96.1MB in the beginning and 95.3MB in the end (delta: 793.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1575] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1575] 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] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] int dataCopy = data; [L1565] int data = dataCopy; VAL [data=-2147483648, data=-2147483648, dataCopy=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] data - 1 VAL [data=-2147483648, data=-2147483648, dataCopy=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:20:10,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/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_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/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_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/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_f2c0b580-43fd-4a71-b1df-c646a6221ef1/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 2cfcdf9a23c3aff1299e58ae710f9b2e69c51ca6676ee742443a89d14241bc80 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:20:12,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:20:12,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:20:12,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:20:12,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:20:12,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:20:12,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:20:12,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:20:12,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:20:12,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:20:12,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:20:12,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:20:12,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:20:12,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:20:12,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:20:12,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:20:12,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:20:12,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:20:12,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:20:12,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:20:12,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:20:12,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:20:12,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:20:12,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:20:12,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:20:12,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:20:12,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:20:12,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:20:12,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:20:12,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:20:12,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:20:12,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:20:12,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:20:12,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:20:12,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:20:12,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:20:12,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:20:12,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:20:12,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:20:12,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:20:12,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:20:12,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 10:20:12,189 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:20:12,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:20:12,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:20:12,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:20:12,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:20:12,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:20:12,191 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:20:12,192 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:20:12,192 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:20:12,192 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:20:12,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:20:12,192 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:20:12,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:20:12,193 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:20:12,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:20:12,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:20:12,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:20:12,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:20:12,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:20:12,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:20:12,194 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:20:12,195 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:20:12,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:20:12,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:20:12,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:20:12,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:20:12,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:20:12,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:20:12,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:20:12,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:20:12,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:20:12,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:20:12,197 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:20:12,197 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:20:12,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:20:12,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:20:12,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:20:12,198 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_f2c0b580-43fd-4a71-b1df-c646a6221ef1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cfcdf9a23c3aff1299e58ae710f9b2e69c51ca6676ee742443a89d14241bc80 [2022-12-14 10:20:12,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:20:12,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:20:12,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:20:12,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:20:12,433 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:20:12,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-12-14 10:20:15,008 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:20:15,272 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:20:15,273 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-12-14 10:20:15,290 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/data/892cbddb3/198938ea4198403dbff35f5dcdd469ee/FLAGe371a68c5 [2022-12-14 10:20:15,561 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/data/892cbddb3/198938ea4198403dbff35f5dcdd469ee [2022-12-14 10:20:15,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:20:15,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:20:15,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:20:15,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:20:15,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:20:15,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:20:15" (1/1) ... [2022-12-14 10:20:15,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ccfa52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:15, skipping insertion in model container [2022-12-14 10:20:15,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:20:15" (1/1) ... [2022-12-14 10:20:15,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:20:15,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:20:15,828 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:20:16,154 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:20:16,158 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:20:16,159 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:20:16,161 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:20:16,161 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:20:16,175 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:20:16,179 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:20:16,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:20:16,192 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:20:16,209 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 10:20:16,247 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 10:20:16,248 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:20:16,249 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 10:20:16,251 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:20:16,251 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 10:20:16,254 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 10:20:16,256 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 10:20:16,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:20:16,353 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:20:16,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16 WrapperNode [2022-12-14 10:20:16,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:20:16,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:20:16,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:20:16,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:20:16,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,393 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-12-14 10:20:16,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:20:16,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:20:16,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:20:16,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:20:16,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,412 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:20:16,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:20:16,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:20:16,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:20:16,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (1/1) ... [2022-12-14 10:20:16,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:20:16,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:20:16,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:20:16,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:20:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 10:20:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 10:20:16,465 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 10:20:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:20:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:20:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:20:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:20:16,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:20:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:20:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 10:20:16,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 10:20:16,592 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:20:16,594 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:20:16,704 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:20:16,709 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:20:16,709 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:20:16,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:20:16 BoogieIcfgContainer [2022-12-14 10:20:16,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:20:16,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:20:16,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:20:16,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:20:16,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:20:15" (1/3) ... [2022-12-14 10:20:16,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b78d4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:20:16, skipping insertion in model container [2022-12-14 10:20:16,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:20:16" (2/3) ... [2022-12-14 10:20:16,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b78d4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:20:16, skipping insertion in model container [2022-12-14 10:20:16,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:20:16" (3/3) ... [2022-12-14 10:20:16,719 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_31_bad.i [2022-12-14 10:20:16,734 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:20:16,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 10:20:16,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:20:16,775 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;@52b4ded1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:20:16,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 10:20:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:20:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:20:16,783 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:20:16,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:20:16,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 10:20:16,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:20:16,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-12-14 10:20:16,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:20:16,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061803330] [2022-12-14 10:20:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:20:16,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:20:16,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:20:16,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:20:16,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 10:20:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:20:16,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:20:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:20:16,994 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 10:20:16,995 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:20:16,996 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 10:20:16,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 10:20:17,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:20:17,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:20:17,208 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 10:20:17,217 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:20:17,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:20:17 BoogieIcfgContainer [2022-12-14 10:20:17,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:20:17,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:20:17,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:20:17,278 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:20:17,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:20:16" (3/4) ... [2022-12-14 10:20:17,288 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:20:17,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:20:17,292 INFO L158 Benchmark]: Toolchain (without parser) took 1726.14ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 46.7MB in the beginning and 40.7MB in the end (delta: 6.0MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2022-12-14 10:20:17,293 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:20:17,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 789.58ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 46.4MB in the beginning and 49.6MB in the end (delta: -3.1MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2022-12-14 10:20:17,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.97ms. Allocated memory is still 92.3MB. Free memory was 49.6MB in the beginning and 46.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 10:20:17,298 INFO L158 Benchmark]: Boogie Preprocessor took 21.51ms. Allocated memory is still 92.3MB. Free memory was 46.3MB in the beginning and 44.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:20:17,299 INFO L158 Benchmark]: RCFGBuilder took 295.38ms. Allocated memory is still 92.3MB. Free memory was 44.2MB in the beginning and 58.5MB in the end (delta: -14.3MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-12-14 10:20:17,300 INFO L158 Benchmark]: TraceAbstraction took 562.81ms. Allocated memory is still 92.3MB. Free memory was 58.0MB in the beginning and 40.7MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 10:20:17,302 INFO L158 Benchmark]: Witness Printer took 11.03ms. Allocated memory is still 92.3MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:20:17,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 789.58ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 46.4MB in the beginning and 49.6MB in the end (delta: -3.1MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.97ms. Allocated memory is still 92.3MB. Free memory was 49.6MB in the beginning and 46.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.51ms. Allocated memory is still 92.3MB. Free memory was 46.3MB in the beginning and 44.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 295.38ms. Allocated memory is still 92.3MB. Free memory was 44.2MB in the beginning and 58.5MB in the end (delta: -14.3MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * TraceAbstraction took 562.81ms. Allocated memory is still 92.3MB. Free memory was 58.0MB in the beginning and 40.7MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 11.03ms. Allocated memory is still 92.3MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1575] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1575] 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] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] int dataCopy = data; [L1565] int data = dataCopy; VAL [data=-2147483648, data=-2147483648, dataCopy=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] data - 1 VAL [data=-2147483648, data=-2147483648, dataCopy=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:20:17,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2c0b580-43fd-4a71-b1df-c646a6221ef1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample