./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 55294aa515a3750037e10b6a6b4a932c4177a2d1acd3b1dec26b13e3528f0134 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:04:26,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:04:26,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:04:26,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:04:26,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:04:26,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:04:26,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:04:26,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:04:26,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:04:26,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:04:26,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:04:26,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:04:26,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:04:26,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:04:26,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:04:26,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:04:26,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:04:26,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:04:26,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:04:26,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:04:26,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:04:26,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:04:26,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:04:26,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:04:26,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:04:26,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:04:26,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:04:26,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:04:26,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:04:26,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:04:26,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:04:26,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:04:26,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:04:26,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:04:26,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:04:26,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:04:26,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:04:26,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:04:26,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:04:26,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:04:26,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:04:26,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 18:04:26,855 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:04:26,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:04:26,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:04:26,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:04:26,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:04:26,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:04:26,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:04:26,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:04:26,860 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:04:26,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:04:26,862 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:04:26,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:04:26,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:04:26,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:04:26,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:04:26,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:04:26,863 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:04:26,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:04:26,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:04:26,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:04:26,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:04:26,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:04:26,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:04:26,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:04:26,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:04:26,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:04:26,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:04:26,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:04:26,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:04:26,868 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:04:26,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:04:26,868 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:04:26,869 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:04:26,869 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55294aa515a3750037e10b6a6b4a932c4177a2d1acd3b1dec26b13e3528f0134 [2022-11-25 18:04:27,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:04:27,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:04:27,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:04:27,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:04:27,280 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:04:27,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-25 18:04:31,001 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:04:31,489 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:04:31,490 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-25 18:04:31,523 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/data/3475bd065/53ab72ee09634f35ae0d1c6064c3470c/FLAGf8500a63e [2022-11-25 18:04:31,541 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/data/3475bd065/53ab72ee09634f35ae0d1c6064c3470c [2022-11-25 18:04:31,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:04:31,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:04:31,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:04:31,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:04:31,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:04:31,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:31" (1/1) ... [2022-11-25 18:04:31,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e75681e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:31, skipping insertion in model container [2022-11-25 18:04:31,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:31" (1/1) ... [2022-11-25 18:04:31,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:04:31,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:04:32,131 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:04:32,844 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:32,852 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:04:32,855 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:04:32,858 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:04:32,860 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:04:32,895 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:04:32,903 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:04:32,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:04:32,919 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:04:32,943 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:04:33,008 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:33,011 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:04:33,013 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:04:33,017 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:04:33,018 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:04:33,024 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:04:33,027 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:04:33,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:04:33,198 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:04:33,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33 WrapperNode [2022-11-25 18:04:33,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:04:33,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:04:33,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:04:33,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:04:33,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,319 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-11-25 18:04:33,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:04:33,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:04:33,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:04:33,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:04:33,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,353 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:04:33,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:04:33,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:04:33,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:04:33,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (1/1) ... [2022-11-25 18:04:33,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:04:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:33,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:04:33,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:04:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 18:04:33,470 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 18:04:33,471 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 18:04:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:04:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 18:04:33,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:04:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:04:33,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:04:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:04:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 18:04:33,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:04:33,769 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:04:33,787 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:04:34,018 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:04:34,025 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:04:34,026 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 18:04:34,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:34 BoogieIcfgContainer [2022-11-25 18:04:34,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:04:34,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:04:34,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:04:34,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:04:34,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:04:31" (1/3) ... [2022-11-25 18:04:34,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a16770b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:34, skipping insertion in model container [2022-11-25 18:04:34,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:33" (2/3) ... [2022-11-25 18:04:34,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a16770b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:34, skipping insertion in model container [2022-11-25 18:04:34,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:34" (3/3) ... [2022-11-25 18:04:34,049 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-25 18:04:34,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:04:34,110 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:04:34,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:04:34,265 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=PETRI_NET, 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;@6f45bf52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:04:34,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:04:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:04:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:04:34,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:34,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:04:34,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 18:04:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:34,292 INFO L85 PathProgramCache]: Analyzing trace with hash -594774068, now seen corresponding path program 1 times [2022-11-25 18:04:34,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:34,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838749081] [2022-11-25 18:04:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:34,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:04:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:04:34,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:04:34,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838749081] [2022-11-25 18:04:34,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838749081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:34,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:04:34,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:04:34,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83971443] [2022-11-25 18:04:34,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:34,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:04:34,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:04:34,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:04:34,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:04:34,657 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 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 2 states, 2 states have (on average 4.5) 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) [2022-11-25 18:04:34,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:34,693 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2022-11-25 18:04:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:04:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) 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 [2022-11-25 18:04:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:34,707 INFO L225 Difference]: With dead ends: 40 [2022-11-25 18:04:34,707 INFO L226 Difference]: Without dead ends: 17 [2022-11-25 18:04:34,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:04:34,724 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:34,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:34,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-25 18:04:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-25 18:04:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-11-25 18:04:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-25 18:04:34,789 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-11-25 18:04:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:34,792 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-25 18:04:34,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) 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) [2022-11-25 18:04:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-25 18:04:34,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 18:04:34,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:34,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:04:34,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:04:34,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 18:04:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:34,799 INFO L85 PathProgramCache]: Analyzing trace with hash -356859129, now seen corresponding path program 1 times [2022-11-25 18:04:34,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:04:34,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727052995] [2022-11-25 18:04:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:34,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:04:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:04:34,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:04:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:04:34,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 18:04:34,994 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:04:34,996 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 18:04:34,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 18:04:35,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:04:35,004 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 18:04:35,009 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:04:35,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:04:35 BoogieIcfgContainer [2022-11-25 18:04:35,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:04:35,061 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:04:35,061 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:04:35,061 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:04:35,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:34" (3/4) ... [2022-11-25 18:04:35,066 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 18:04:35,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:04:35,067 INFO L158 Benchmark]: Toolchain (without parser) took 3521.01ms. Allocated memory is still 213.9MB. Free memory was 177.9MB in the beginning and 151.2MB in the end (delta: 26.7MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2022-11-25 18:04:35,068 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 151.0MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:04:35,068 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1651.31ms. Allocated memory is still 213.9MB. Free memory was 177.9MB in the beginning and 115.2MB in the end (delta: 62.7MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2022-11-25 18:04:35,069 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.92ms. Allocated memory is still 213.9MB. Free memory was 115.2MB in the beginning and 112.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:04:35,070 INFO L158 Benchmark]: Boogie Preprocessor took 35.03ms. Allocated memory is still 213.9MB. Free memory was 112.7MB in the beginning and 110.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:04:35,070 INFO L158 Benchmark]: RCFGBuilder took 670.24ms. Allocated memory is still 213.9MB. Free memory was 110.9MB in the beginning and 98.4MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 18:04:35,071 INFO L158 Benchmark]: TraceAbstraction took 1022.83ms. Allocated memory is still 213.9MB. Free memory was 97.2MB in the beginning and 151.2MB in the end (delta: -54.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:04:35,071 INFO L158 Benchmark]: Witness Printer took 5.72ms. Allocated memory is still 213.9MB. Free memory is still 151.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:04:35,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 151.0MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1651.31ms. Allocated memory is still 213.9MB. Free memory was 177.9MB in the beginning and 115.2MB in the end (delta: 62.7MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 121.92ms. Allocated memory is still 213.9MB. Free memory was 115.2MB in the beginning and 112.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.03ms. Allocated memory is still 213.9MB. Free memory was 112.7MB in the beginning and 110.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 670.24ms. Allocated memory is still 213.9MB. Free memory was 110.9MB in the beginning and 98.4MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1022.83ms. Allocated memory is still 213.9MB. Free memory was 97.2MB in the beginning and 151.2MB in the end (delta: -54.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.72ms. Allocated memory is still 213.9MB. Free memory is still 151.2MB. 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 1558. 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] [L1578] 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) [L1578] RET printLine("Calling bad()...") VAL [\old(argc)=1073741829, argc=1073741829, argv={1073741827:1073741830}, argv={1073741827:1073741830}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_multiply_02_bad() [L1550] int data; [L1551] 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] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1568] COND TRUE data < 0 VAL [data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] data * 2 VAL [data=-1073741825, 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: 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 28 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 10 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 [2022-11-25 18:04:35,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/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_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 55294aa515a3750037e10b6a6b4a932c4177a2d1acd3b1dec26b13e3528f0134 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:04:38,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:04:38,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:04:38,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:04:38,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:04:38,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:04:38,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:04:38,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:04:38,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:04:38,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:04:38,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:04:38,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:04:38,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:04:38,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:04:38,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:04:38,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:04:38,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:04:38,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:04:38,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:04:38,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:04:38,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:04:38,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:04:38,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:04:38,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:04:38,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:04:38,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:04:38,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:04:38,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:04:38,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:04:38,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:04:38,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:04:38,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:04:38,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:04:38,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:04:38,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:04:38,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:04:38,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:04:38,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:04:38,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:04:38,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:04:38,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:04:38,411 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-25 18:04:38,463 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:04:38,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:04:38,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:04:38,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:04:38,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:04:38,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:04:38,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:04:38,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:04:38,469 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:04:38,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:04:38,471 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:04:38,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:04:38,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:04:38,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:04:38,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:04:38,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:04:38,472 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:04:38,472 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:04:38,473 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:04:38,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:04:38,473 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:04:38,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:04:38,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:04:38,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:04:38,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:04:38,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:04:38,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:04:38,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:04:38,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:04:38,475 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:04:38,475 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:04:38,476 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:04:38,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:04:38,476 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:04:38,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:04:38,477 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:04:38,477 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55294aa515a3750037e10b6a6b4a932c4177a2d1acd3b1dec26b13e3528f0134 [2022-11-25 18:04:38,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:04:39,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:04:39,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:04:39,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:04:39,050 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:04:39,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-25 18:04:43,168 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:04:43,642 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:04:43,652 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-25 18:04:43,678 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/data/7a44bd0e0/7624eb5029b144cd95dfde525d0f69aa/FLAG6681a3ef0 [2022-11-25 18:04:43,701 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/data/7a44bd0e0/7624eb5029b144cd95dfde525d0f69aa [2022-11-25 18:04:43,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:04:43,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:04:43,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:04:43,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:04:43,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:04:43,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:43" (1/1) ... [2022-11-25 18:04:43,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a7a0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:43, skipping insertion in model container [2022-11-25 18:04:43,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:43" (1/1) ... [2022-11-25 18:04:43,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:04:43,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:04:44,308 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:04:44,928 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:44,936 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:04:44,938 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:04:44,941 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:04:44,942 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:04:44,970 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:04:44,977 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:04:44,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:04:44,997 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:04:45,025 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:04:45,092 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 18:04:45,094 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:04:45,096 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 18:04:45,099 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:04:45,101 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 18:04:45,107 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 18:04:45,109 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 18:04:45,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:04:45,323 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:04:45,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45 WrapperNode [2022-11-25 18:04:45,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:04:45,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:04:45,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:04:45,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:04:45,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,404 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-11-25 18:04:45,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:04:45,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:04:45,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:04:45,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:04:45,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,438 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:04:45,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:04:45,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:04:45,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:04:45,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (1/1) ... [2022-11-25 18:04:45,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:04:45,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:04:45,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:04:45,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:04:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 18:04:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 18:04:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 18:04:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:04:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:04:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:04:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:04:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:04:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:04:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 18:04:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 18:04:45,758 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:04:45,776 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:04:45,996 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:04:46,011 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:04:46,011 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 18:04:46,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:46 BoogieIcfgContainer [2022-11-25 18:04:46,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:04:46,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:04:46,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:04:46,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:04:46,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:04:43" (1/3) ... [2022-11-25 18:04:46,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3261c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:46, skipping insertion in model container [2022-11-25 18:04:46,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:45" (2/3) ... [2022-11-25 18:04:46,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3261c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:46, skipping insertion in model container [2022-11-25 18:04:46,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:46" (3/3) ... [2022-11-25 18:04:46,036 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_02_bad.i [2022-11-25 18:04:46,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:04:46,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:04:46,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:04:46,154 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=PETRI_NET, 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;@366eb854, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:04:46,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:04:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:04:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:04:46,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:46,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:04:46,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 18:04:46,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:46,188 INFO L85 PathProgramCache]: Analyzing trace with hash -594774068, now seen corresponding path program 1 times [2022-11-25 18:04:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:04:46,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403609126] [2022-11-25 18:04:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:46,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:04:46,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:04:46,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:04:46,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 18:04:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:04:46,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 18:04:46,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:04:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:04:46,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:04:46,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:04:46,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403609126] [2022-11-25 18:04:46,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403609126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:04:46,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:04:46,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:04:46,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547379290] [2022-11-25 18:04:46,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:04:46,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:04:46,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:04:46,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:04:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:04:46,493 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 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 2 states, 2 states have (on average 4.5) 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) [2022-11-25 18:04:46,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:04:46,526 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2022-11-25 18:04:46,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:04:46,530 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) 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 [2022-11-25 18:04:46,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:04:46,539 INFO L225 Difference]: With dead ends: 40 [2022-11-25 18:04:46,540 INFO L226 Difference]: Without dead ends: 17 [2022-11-25 18:04:46,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:04:46,552 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:04:46,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:04:46,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-25 18:04:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-25 18:04:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-11-25 18:04:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-25 18:04:46,603 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-11-25 18:04:46,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:04:46,607 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-25 18:04:46,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) 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) [2022-11-25 18:04:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-25 18:04:46,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 18:04:46,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:04:46,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:04:46,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:46,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:04:46,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 18:04:46,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:04:46,827 INFO L85 PathProgramCache]: Analyzing trace with hash -356859129, now seen corresponding path program 1 times [2022-11-25 18:04:46,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:04:46,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692585652] [2022-11-25 18:04:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:04:46,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:04:46,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:04:46,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 18:04:46,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 18:04:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:04:47,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 18:04:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 18:04:47,130 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 18:04:47,130 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 18:04:47,133 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 18:04:47,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 18:04:47,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 18:04:47,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:04:47,353 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 18:04:47,357 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:04:47,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:04:47 BoogieIcfgContainer [2022-11-25 18:04:47,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:04:47,424 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:04:47,424 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:04:47,424 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:04:47,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:46" (3/4) ... [2022-11-25 18:04:47,429 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 18:04:47,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:04:47,430 INFO L158 Benchmark]: Toolchain (without parser) took 3723.44ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 44.9MB in the beginning and 51.0MB in the end (delta: -6.1MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2022-11-25 18:04:47,431 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 73.4MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:04:47,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1609.58ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 44.7MB in the beginning and 66.3MB in the end (delta: -21.6MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2022-11-25 18:04:47,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.68ms. Allocated memory is still 102.8MB. Free memory was 66.3MB in the beginning and 63.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:04:47,433 INFO L158 Benchmark]: Boogie Preprocessor took 38.21ms. Allocated memory is still 102.8MB. Free memory was 63.2MB in the beginning and 61.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:04:47,434 INFO L158 Benchmark]: RCFGBuilder took 577.92ms. Allocated memory is still 102.8MB. Free memory was 61.1MB in the beginning and 47.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 18:04:47,434 INFO L158 Benchmark]: TraceAbstraction took 1398.51ms. Allocated memory is still 102.8MB. Free memory was 47.0MB in the beginning and 51.7MB in the end (delta: -4.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:04:47,435 INFO L158 Benchmark]: Witness Printer took 5.75ms. Allocated memory is still 102.8MB. Free memory was 51.7MB in the beginning and 51.0MB in the end (delta: 632.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:04:47,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 73.4MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1609.58ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 44.7MB in the beginning and 66.3MB in the end (delta: -21.6MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.68ms. Allocated memory is still 102.8MB. Free memory was 66.3MB in the beginning and 63.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.21ms. Allocated memory is still 102.8MB. Free memory was 63.2MB in the beginning and 61.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 577.92ms. Allocated memory is still 102.8MB. Free memory was 61.1MB in the beginning and 47.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1398.51ms. Allocated memory is still 102.8MB. Free memory was 47.0MB in the beginning and 51.7MB in the end (delta: -4.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.75ms. Allocated memory is still 102.8MB. Free memory was 51.7MB in the beginning and 51.0MB in the end (delta: 632.4kB). 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 1558. 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] [L1578] 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) [L1578] 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] [L1579] CALL CWE191_Integer_Underflow__int_fgets_multiply_02_bad() [L1550] int data; [L1551] 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] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] 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] [L1568] COND TRUE data < 0 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] [L1570] 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] - 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: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 28 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 1 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 [2022-11-25 18:04:47,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62ebc93-5e22-4bd7-bdf5-cc3a1086c9a6/bin/uautomizer-ZsLfNo2U6R/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