./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8 --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 b3dda94dbaa4019f2d6b4807d8dac24168aa09a3e6ed50d0ed1e738e226c7fcb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:48:41,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:48:41,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:48:41,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:48:41,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:48:41,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:48:41,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:48:41,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:48:41,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:48:41,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:48:41,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:48:41,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:48:41,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:48:41,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:48:41,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:48:41,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:48:41,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:48:41,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:48:41,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:48:41,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:48:41,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:48:41,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:48:41,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:48:41,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:48:41,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:48:41,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:48:41,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:48:41,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:48:41,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:48:41,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:48:41,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:48:41,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:48:41,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:48:41,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:48:41,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:48:41,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:48:41,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:48:41,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:48:41,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:48:41,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:48:41,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:48:41,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 13:48:41,815 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:48:41,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:48:41,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:48:41,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:48:41,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:48:41,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:48:41,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:48:41,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:48:41,817 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:48:41,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:48:41,817 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:48:41,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:48:41,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:48:41,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:48:41,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:48:41,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:48:41,818 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 13:48:41,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:48:41,818 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:48:41,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:48:41,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:48:41,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:48:41,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:48:41,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:48:41,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:48:41,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:48:41,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:48:41,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:48:41,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:48:41,820 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:48:41,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:48:41,820 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:48:41,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:48:41,821 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:48:41,821 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_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3dda94dbaa4019f2d6b4807d8dac24168aa09a3e6ed50d0ed1e738e226c7fcb [2022-12-13 13:48:42,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:48:42,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:48:42,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:48:42,019 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:48:42,020 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:48:42,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i [2022-12-13 13:48:44,657 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:48:44,906 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:48:44,906 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i [2022-12-13 13:48:44,919 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/data/4ae746dad/7849cd2db5db4e00843aaf1d28b87c40/FLAGc240363e1 [2022-12-13 13:48:44,929 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/data/4ae746dad/7849cd2db5db4e00843aaf1d28b87c40 [2022-12-13 13:48:44,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:48:44,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:48:44,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:48:44,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:48:44,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:48:44,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:48:44" (1/1) ... [2022-12-13 13:48:44,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cd2ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:44, skipping insertion in model container [2022-12-13 13:48:44,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:48:44" (1/1) ... [2022-12-13 13:48:44,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:48:44,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:48:45,213 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:48:45,566 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:48:45,571 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:48:45,573 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:48:45,575 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:48:45,576 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:48:45,597 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:48:45,600 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:48:45,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:48:45,610 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:48:45,623 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:48:45,661 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:48:45,662 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:48:45,663 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:48:45,666 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:48:45,666 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:48:45,671 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:48:45,673 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:48:45,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:48:45,819 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:48:45,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45 WrapperNode [2022-12-13 13:48:45,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:48:45,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:48:45,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:48:45,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:48:45,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,867 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-12-13 13:48:45,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:48:45,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:48:45,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:48:45,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:48:45,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,882 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:48:45,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:48:45,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:48:45,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:48:45,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (1/1) ... [2022-12-13 13:48:45,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:48:45,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:48:45,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:48:45,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:48:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 13:48:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 13:48:45,936 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 13:48:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:48:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 13:48:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:48:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:48:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:48:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:48:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 13:48:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:48:46,046 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:48:46,048 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:48:46,146 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:48:46,150 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:48:46,151 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:48:46,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:48:46 BoogieIcfgContainer [2022-12-13 13:48:46,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:48:46,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:48:46,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:48:46,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:48:46,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:48:44" (1/3) ... [2022-12-13 13:48:46,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231851c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:48:46, skipping insertion in model container [2022-12-13 13:48:46,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:45" (2/3) ... [2022-12-13 13:48:46,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231851c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:48:46, skipping insertion in model container [2022-12-13 13:48:46,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:48:46" (3/3) ... [2022-12-13 13:48:46,160 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_21_bad.i [2022-12-13 13:48:46,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:48:46,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 13:48:46,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:48:46,216 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;@3443972c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:48:46,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 13:48:46,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 13:48:46,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 13:48:46,226 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:46,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:46,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 13:48:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:46,232 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2022-12-13 13:48:46,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:48:46,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366159065] [2022-12-13 13:48:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:46,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:48:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:48:46,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:48:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:48:46,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:48:46,398 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:48:46,399 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 13:48:46,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 13:48:46,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:48:46,405 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 13:48:46,409 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:48:46,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:48:46 BoogieIcfgContainer [2022-12-13 13:48:46,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:48:46,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:48:46,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:48:46,435 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:48:46,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:48:46" (3/4) ... [2022-12-13 13:48:46,437 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:48:46,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:48:46,439 INFO L158 Benchmark]: Toolchain (without parser) took 1505.97ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 89.8MB in the beginning and 64.1MB in the end (delta: 25.7MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. [2022-12-13 13:48:46,439 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory was 92.9MB in the beginning and 92.9MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:48:46,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 886.91ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 89.2MB in the beginning and 99.7MB in the end (delta: -10.5MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. [2022-12-13 13:48:46,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.49ms. Allocated memory is still 155.2MB. Free memory was 99.7MB in the beginning and 96.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:48:46,441 INFO L158 Benchmark]: Boogie Preprocessor took 16.67ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 95.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:48:46,442 INFO L158 Benchmark]: RCFGBuilder took 267.70ms. Allocated memory is still 155.2MB. Free memory was 95.6MB in the beginning and 82.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 13:48:46,442 INFO L158 Benchmark]: TraceAbstraction took 279.43ms. Allocated memory is still 155.2MB. Free memory was 82.1MB in the beginning and 65.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 13:48:46,443 INFO L158 Benchmark]: Witness Printer took 3.30ms. Allocated memory is still 155.2MB. Free memory was 65.3MB in the beginning and 64.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:48:46,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory was 92.9MB in the beginning and 92.9MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 886.91ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 89.2MB in the beginning and 99.7MB in the end (delta: -10.5MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.49ms. Allocated memory is still 155.2MB. Free memory was 99.7MB in the beginning and 96.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.67ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 95.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 267.70ms. Allocated memory is still 155.2MB. Free memory was 95.6MB in the beginning and 82.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 279.43ms. Allocated memory is still 155.2MB. Free memory was 82.1MB in the beginning and 65.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.30ms. Allocated memory is still 155.2MB. Free memory was 65.3MB in the beginning and 64.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. 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: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1568. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int badStatic = 0; VAL [badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL printLine("Calling bad()...") VAL [badStatic=0, 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) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=1073741829, argc=1073741829, argv={1073741826:1073741830}, argv={1073741826:1073741830}, badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_predec_21_bad() [L1562] int data; [L1563] data = 0 [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1566] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1568] data = atoi(inputBuffer) [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1575] badStatic = 1 [L1576] CALL badSink(data) [L1551] COND TRUE \read(badStatic) VAL [\old(data)=-2147483648, badStatic=1, 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] [L1554] --data VAL [\old(data)=-2147483648, badStatic=1, 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: 1554]: 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: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:48:46,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8 --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 b3dda94dbaa4019f2d6b4807d8dac24168aa09a3e6ed50d0ed1e738e226c7fcb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:48:48,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:48:48,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:48:48,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:48:48,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:48:48,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:48:48,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:48:48,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:48:48,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:48:48,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:48:48,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:48:48,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:48:48,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:48:48,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:48:48,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:48:48,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:48:48,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:48:48,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:48:48,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:48:48,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:48:48,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:48:48,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:48:48,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:48:48,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:48:48,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:48:48,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:48:48,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:48:48,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:48:48,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:48:48,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:48:48,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:48:48,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:48:48,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:48:48,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:48:48,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:48:48,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:48:48,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:48:48,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:48:48,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:48:48,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:48:48,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:48:48,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 13:48:48,297 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:48:48,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:48:48,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:48:48,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:48:48,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:48:48,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:48:48,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:48:48,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:48:48,299 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:48:48,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:48:48,300 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:48:48,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:48:48,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:48:48,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:48:48,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:48:48,301 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:48:48,301 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 13:48:48,301 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 13:48:48,301 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 13:48:48,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:48:48,302 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:48:48,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:48:48,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:48:48,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:48:48,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:48:48,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:48:48,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:48:48,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:48:48,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:48:48,309 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 13:48:48,310 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 13:48:48,310 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:48:48,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:48:48,310 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:48:48,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:48:48,310 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 13:48:48,311 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:48:48,311 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_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3dda94dbaa4019f2d6b4807d8dac24168aa09a3e6ed50d0ed1e738e226c7fcb [2022-12-13 13:48:48,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:48:48,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:48:48,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:48:48,563 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:48:48,563 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:48:48,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i [2022-12-13 13:48:51,072 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:48:51,311 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:48:51,312 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_21_bad.i [2022-12-13 13:48:51,329 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/data/3aaad60f3/2b6e34e6e3bf4f49bba66456411133e3/FLAG0d2e3c343 [2022-12-13 13:48:51,340 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/data/3aaad60f3/2b6e34e6e3bf4f49bba66456411133e3 [2022-12-13 13:48:51,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:48:51,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:48:51,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:48:51,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:48:51,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:48:51,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:48:51" (1/1) ... [2022-12-13 13:48:51,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b93bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:51, skipping insertion in model container [2022-12-13 13:48:51,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:48:51" (1/1) ... [2022-12-13 13:48:51,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:48:51,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:48:51,609 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:48:51,906 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:48:51,910 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:48:51,911 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:48:51,912 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:48:51,913 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:48:51,929 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:48:51,931 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:48:51,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:48:51,944 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:48:51,959 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 13:48:51,991 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 13:48:51,992 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:48:51,993 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 13:48:51,995 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:48:51,995 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 13:48:51,999 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 13:48:52,000 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 13:48:52,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:48:52,080 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:48:52,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52 WrapperNode [2022-12-13 13:48:52,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:48:52,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:48:52,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:48:52,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:48:52,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,118 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2022-12-13 13:48:52,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:48:52,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:48:52,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:48:52,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:48:52,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,141 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:48:52,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:48:52,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:48:52,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:48:52,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (1/1) ... [2022-12-13 13:48:52,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:48:52,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:48:52,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:48:52,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:48:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 13:48:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 13:48:52,212 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 13:48:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:48:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 13:48:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:48:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:48:52,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:48:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:48:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 13:48:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 13:48:52,352 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:48:52,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:48:52,482 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:48:52,487 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:48:52,487 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 13:48:52,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:48:52 BoogieIcfgContainer [2022-12-13 13:48:52,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:48:52,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:48:52,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:48:52,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:48:52,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:48:51" (1/3) ... [2022-12-13 13:48:52,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596d0077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:48:52, skipping insertion in model container [2022-12-13 13:48:52,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:48:52" (2/3) ... [2022-12-13 13:48:52,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596d0077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:48:52, skipping insertion in model container [2022-12-13 13:48:52,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:48:52" (3/3) ... [2022-12-13 13:48:52,497 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_21_bad.i [2022-12-13 13:48:52,516 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:48:52,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 13:48:52,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:48:52,568 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;@1eb851ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:48:52,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 13:48:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 13:48:52,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 13:48:52,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:48:52,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:48:52,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 13:48:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:48:52,587 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2022-12-13 13:48:52,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:48:52,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314325717] [2022-12-13 13:48:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:48:52,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:48:52,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:48:52,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:48:52,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 13:48:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:48:52,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:48:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:48:52,792 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 13:48:52,794 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:48:52,795 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 13:48:52,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 13:48:52,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:48:52,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:48:53,002 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 13:48:53,005 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:48:53,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:48:53 BoogieIcfgContainer [2022-12-13 13:48:53,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:48:53,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:48:53,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:48:53,027 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:48:53,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:48:52" (3/4) ... [2022-12-13 13:48:53,030 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:48:53,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:48:53,032 INFO L158 Benchmark]: Toolchain (without parser) took 1688.72ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 62.5MB in the beginning and 88.5MB in the end (delta: -26.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:48:53,032 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 65.0MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:48:53,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 736.74ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 46.0MB in the end (delta: 16.2MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-12-13 13:48:53,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.85ms. Allocated memory is still 98.6MB. Free memory was 46.0MB in the beginning and 42.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:48:53,034 INFO L158 Benchmark]: Boogie Preprocessor took 25.80ms. Allocated memory is still 98.6MB. Free memory was 42.8MB in the beginning and 70.8MB in the end (delta: -28.0MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-12-13 13:48:53,034 INFO L158 Benchmark]: RCFGBuilder took 344.05ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 56.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 13:48:53,035 INFO L158 Benchmark]: TraceAbstraction took 534.28ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 56.1MB in the beginning and 88.5MB in the end (delta: -32.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 13:48:53,036 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 119.5MB. Free memory was 88.5MB in the beginning and 88.5MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:48:53,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 65.0MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 736.74ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 46.0MB in the end (delta: 16.2MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.85ms. Allocated memory is still 98.6MB. Free memory was 46.0MB in the beginning and 42.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.80ms. Allocated memory is still 98.6MB. Free memory was 42.8MB in the beginning and 70.8MB in the end (delta: -28.0MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * RCFGBuilder took 344.05ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 56.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 534.28ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 56.1MB in the beginning and 88.5MB in the end (delta: -32.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 119.5MB. Free memory was 88.5MB in the beginning and 88.5MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1568. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int badStatic = 0; VAL [badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL printLine("Calling bad()...") VAL [badStatic=0, 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) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, badStatic=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_predec_21_bad() [L1562] int data; [L1563] data = 0 [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1566] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1568] data = atoi(inputBuffer) [L1565] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1575] badStatic = 1 [L1576] CALL badSink(data) [L1551] COND TRUE \read(badStatic) VAL [\old(data)=-2147483648, badStatic=1, 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] [L1554] --data VAL [\old(data)=-2147483648, badStatic=1, 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: 1554]: 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: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:48:53,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f67b6031-bc3c-41c0-b92e-a6a5017e4a84/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample