./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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 e1b811ebaac96e30d95d25d077da4e563845fb857f9aa9457153539bb79aef42 --- 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 12:19:31,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:19:31,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:19:31,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:19:31,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:19:31,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:19:31,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:19:31,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:19:31,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:19:31,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:19:31,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:19:31,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:19:31,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:19:31,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:19:31,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:19:31,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:19:31,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:19:31,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:19:31,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:19:31,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:19:31,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:19:31,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:19:31,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:19:31,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:19:31,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:19:31,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:19:31,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:19:31,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:19:31,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:19:31,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:19:31,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:19:31,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:19:31,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:19:31,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:19:31,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:19:31,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:19:31,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:19:31,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:19:31,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:19:31,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:19:31,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:19:31,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 12:19:31,088 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:19:31,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:19:31,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:19:31,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:19:31,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:19:31,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:19:31,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:19:31,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:19:31,096 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:19:31,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:19:31,096 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:19:31,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:19:31,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:19:31,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:19:31,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:19:31,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:19:31,097 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:19:31,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:19:31,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:19:31,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:19:31,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:19:31,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:19:31,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:19:31,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:19:31,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:19:31,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:19:31,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:19:31,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:19:31,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:19:31,098 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:19:31,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:19:31,099 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:19:31,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:19:31,099 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:19:31,099 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_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1b811ebaac96e30d95d25d077da4e563845fb857f9aa9457153539bb79aef42 [2022-12-13 12:19:31,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:19:31,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:19:31,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:19:31,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:19:31,279 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:19:31,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-12-13 12:19:33,795 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:19:34,081 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:19:34,081 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-12-13 12:19:34,098 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/data/8c07985a3/db02bd09079446f9a3e30d5c39b47389/FLAGf8dbe6869 [2022-12-13 12:19:34,394 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/data/8c07985a3/db02bd09079446f9a3e30d5c39b47389 [2022-12-13 12:19:34,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:19:34,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:19:34,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:19:34,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:19:34,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:19:34,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:19:34" (1/1) ... [2022-12-13 12:19:34,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd0cfcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:34, skipping insertion in model container [2022-12-13 12:19:34,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:19:34" (1/1) ... [2022-12-13 12:19:34,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:19:34,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:19:34,697 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 12:19:35,037 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:19:35,041 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 12:19:35,042 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 12:19:35,044 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 12:19:35,044 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 12:19:35,059 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 12:19:35,061 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 12:19:35,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:19:35,071 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:19:35,083 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 12:19:35,111 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:19:35,112 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 12:19:35,113 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 12:19:35,114 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 12:19:35,115 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 12:19:35,118 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 12:19:35,119 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 12:19:35,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:19:35,233 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:19:35,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35 WrapperNode [2022-12-13 12:19:35,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:19:35,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:19:35,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:19:35,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:19:35,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,279 INFO L138 Inliner]: procedures = 501, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2022-12-13 12:19:35,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:19:35,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:19:35,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:19:35,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:19:35,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,296 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:19:35,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:19:35,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:19:35,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:19:35,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (1/1) ... [2022-12-13 12:19:35,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:19:35,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:19:35,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:19:35,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:19:35,350 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 12:19:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 12:19:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 12:19:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:19:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 12:19:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:19:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:19:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:19:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:19:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:19:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 12:19:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:19:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:19:35,461 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:19:35,462 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:19:35,576 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:19:35,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:19:35,580 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:19:35,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:19:35 BoogieIcfgContainer [2022-12-13 12:19:35,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:19:35,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:19:35,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:19:35,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:19:35,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:19:34" (1/3) ... [2022-12-13 12:19:35,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54357c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:19:35, skipping insertion in model container [2022-12-13 12:19:35,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:35" (2/3) ... [2022-12-13 12:19:35,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54357c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:19:35, skipping insertion in model container [2022-12-13 12:19:35,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:19:35" (3/3) ... [2022-12-13 12:19:35,592 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-12-13 12:19:35,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:19:35,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 12:19:35,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:19:35,665 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;@7ca45266, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:19:35,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 12:19:35,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:19:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 12:19:35,678 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:19:35,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:19:35,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 12:19:35,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:19:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-12-13 12:19:35,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:19:35,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173544259] [2022-12-13 12:19:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:19:35,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:19:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:19:35,834 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:19:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:19:35,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:19:35,889 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:19:35,890 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 12:19:35,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 12:19:35,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:19:35,897 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 12:19:35,901 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:19:35,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:19:35 BoogieIcfgContainer [2022-12-13 12:19:35,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:19:35,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:19:35,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:19:35,925 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:19:35,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:19:35" (3/4) ... [2022-12-13 12:19:35,928 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 12:19:35,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:19:35,929 INFO L158 Benchmark]: Toolchain (without parser) took 1526.06ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 96.9MB in the beginning and 90.6MB in the end (delta: 6.3MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2022-12-13 12:19:35,929 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:19:35,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 827.04ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 96.9MB in the beginning and 128.4MB in the end (delta: -31.4MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2022-12-13 12:19:35,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.84ms. Allocated memory is still 174.1MB. Free memory was 128.4MB in the beginning and 125.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:19:35,931 INFO L158 Benchmark]: Boogie Preprocessor took 18.94ms. Allocated memory is still 174.1MB. Free memory was 125.3MB in the beginning and 124.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:19:35,931 INFO L158 Benchmark]: RCFGBuilder took 283.56ms. Allocated memory is still 174.1MB. Free memory was 124.2MB in the beginning and 109.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 12:19:35,932 INFO L158 Benchmark]: TraceAbstraction took 338.57ms. Allocated memory is still 174.1MB. Free memory was 108.6MB in the beginning and 90.6MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 12:19:35,932 INFO L158 Benchmark]: Witness Printer took 3.63ms. Allocated memory is still 174.1MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:19:35,935 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 136.3MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 827.04ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 96.9MB in the beginning and 128.4MB in the end (delta: -31.4MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.84ms. Allocated memory is still 174.1MB. Free memory was 128.4MB in the beginning and 125.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.94ms. Allocated memory is still 174.1MB. Free memory was 125.3MB in the beginning and 124.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 283.56ms. Allocated memory is still 174.1MB. Free memory was 124.2MB in the beginning and 109.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 338.57ms. Allocated memory is still 174.1MB. Free memory was 108.6MB in the beginning and 90.6MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 3.63ms. Allocated memory is still 174.1MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1575] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1575] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, argv={1073741827:1073741833}, argv={1073741827:1073741833}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL CWE191_Integer_Underflow__int_fgets_predec_67_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_predec_67_structType myStruct; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569] myStruct.structFirst = data [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_67b_badSink(myStruct) [L1581] EXPR myStruct.structFirst [L1581] int data = myStruct.structFirst; [L1583] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myStruct={6:0}, unknown-#in~myStruct!structFirst-unknown=-2147483648] - UnprovableResult [Line: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 12:19:35,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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 e1b811ebaac96e30d95d25d077da4e563845fb857f9aa9457153539bb79aef42 --- 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 12:19:37,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:19:37,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:19:37,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:19:37,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:19:37,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:19:37,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:19:37,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:19:37,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:19:37,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:19:37,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:19:37,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:19:37,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:19:37,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:19:37,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:19:37,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:19:37,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:19:37,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:19:37,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:19:37,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:19:37,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:19:37,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:19:37,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:19:37,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:19:37,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:19:37,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:19:37,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:19:37,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:19:37,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:19:37,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:19:37,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:19:37,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:19:37,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:19:37,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:19:37,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:19:37,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:19:37,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:19:37,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:19:37,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:19:37,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:19:37,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:19:37,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-12-13 12:19:37,558 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:19:37,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:19:37,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:19:37,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:19:37,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:19:37,559 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:19:37,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:19:37,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:19:37,560 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:19:37,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:19:37,561 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:19:37,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:19:37,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:19:37,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:19:37,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:19:37,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:19:37,561 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 12:19:37,562 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:19:37,562 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 12:19:37,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:19:37,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:19:37,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:19:37,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:19:37,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:19:37,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:19:37,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:19:37,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:19:37,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:19:37,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:19:37,564 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 12:19:37,564 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 12:19:37,564 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:19:37,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:19:37,564 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:19:37,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:19:37,565 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 12:19:37,565 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:19:37,565 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_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1b811ebaac96e30d95d25d077da4e563845fb857f9aa9457153539bb79aef42 [2022-12-13 12:19:37,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:19:37,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:19:37,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:19:37,806 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:19:37,807 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:19:37,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-12-13 12:19:40,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:19:40,532 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:19:40,532 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-12-13 12:19:40,544 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/data/f4c47eaad/d7c8bedcd3254d23b211ccb365936072/FLAGb5ea6a1c5 [2022-12-13 12:19:40,872 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/data/f4c47eaad/d7c8bedcd3254d23b211ccb365936072 [2022-12-13 12:19:40,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:19:40,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:19:40,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:19:40,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:19:40,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:19:40,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:19:40" (1/1) ... [2022-12-13 12:19:40,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b3a52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:40, skipping insertion in model container [2022-12-13 12:19:40,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:19:40" (1/1) ... [2022-12-13 12:19:40,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:19:40,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:19:41,193 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 12:19:41,494 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:19:41,498 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 12:19:41,499 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 12:19:41,501 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 12:19:41,502 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 12:19:41,520 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 12:19:41,523 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 12:19:41,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:19:41,537 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:19:41,554 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 12:19:41,605 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 12:19:41,606 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 12:19:41,608 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-13 12:19:41,610 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 12:19:41,610 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-13 12:19:41,614 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-13 12:19:41,616 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-13 12:19:41,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:19:41,716 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:19:41,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41 WrapperNode [2022-12-13 12:19:41,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:19:41,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:19:41,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:19:41,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:19:41,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,762 INFO L138 Inliner]: procedures = 506, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2022-12-13 12:19:41,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:19:41,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:19:41,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:19:41,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:19:41,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,786 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:19:41,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:19:41,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:19:41,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:19:41,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (1/1) ... [2022-12-13 12:19:41,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:19:41,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:19:41,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:19:41,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:19:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-13 12:19:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-13 12:19:41,841 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-13 12:19:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:19:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 12:19:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:19:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:19:41,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:19:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 12:19:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:19:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 12:19:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-13 12:19:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 12:19:41,964 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:19:41,966 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:19:42,128 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:19:42,132 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:19:42,132 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:19:42,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:19:42 BoogieIcfgContainer [2022-12-13 12:19:42,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:19:42,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:19:42,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:19:42,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:19:42,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:19:40" (1/3) ... [2022-12-13 12:19:42,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ebac8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:19:42, skipping insertion in model container [2022-12-13 12:19:42,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:19:41" (2/3) ... [2022-12-13 12:19:42,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ebac8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:19:42, skipping insertion in model container [2022-12-13 12:19:42,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:19:42" (3/3) ... [2022-12-13 12:19:42,139 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_67_bad.i [2022-12-13 12:19:42,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:19:42,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 12:19:42,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:19:42,189 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;@4bde1f9a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:19:42,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 12:19:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:19:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 12:19:42,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:19:42,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:19:42,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-13 12:19:42,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:19:42,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-12-13 12:19:42,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 12:19:42,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993131390] [2022-12-13 12:19:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:19:42,212 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 12:19:42,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 12:19:42,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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 12:19:42,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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 12:19:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:19:42,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:19:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:19:42,462 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 12:19:42,464 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:19:42,465 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-13 12:19:42,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-13 12:19:42,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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 12:19:42,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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 12:19:42,673 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 12:19:42,681 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:19:42,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:19:42 BoogieIcfgContainer [2022-12-13 12:19:42,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:19:42,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:19:42,701 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:19:42,701 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:19:42,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:19:42" (3/4) ... [2022-12-13 12:19:42,703 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 12:19:42,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:19:42,704 INFO L158 Benchmark]: Toolchain (without parser) took 1829.41ms. Allocated memory is still 69.2MB. Free memory was 38.1MB in the beginning and 40.1MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:19:42,704 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 50.3MB. Free memory is still 28.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:19:42,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 840.84ms. Allocated memory is still 69.2MB. Free memory was 38.0MB in the beginning and 43.0MB in the end (delta: -5.0MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2022-12-13 12:19:42,709 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.70ms. Allocated memory is still 69.2MB. Free memory was 43.0MB in the beginning and 39.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 12:19:42,710 INFO L158 Benchmark]: Boogie Preprocessor took 26.79ms. Allocated memory is still 69.2MB. Free memory was 39.6MB in the beginning and 37.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:19:42,710 INFO L158 Benchmark]: RCFGBuilder took 343.14ms. Allocated memory is still 69.2MB. Free memory was 37.4MB in the beginning and 39.0MB in the end (delta: -1.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 12:19:42,710 INFO L158 Benchmark]: TraceAbstraction took 564.97ms. Allocated memory is still 69.2MB. Free memory was 38.4MB in the beginning and 40.4MB in the end (delta: -2.1MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2022-12-13 12:19:42,711 INFO L158 Benchmark]: Witness Printer took 3.12ms. Allocated memory is still 69.2MB. Free memory was 40.4MB in the beginning and 40.1MB in the end (delta: 351.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:19:42,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 50.3MB. Free memory is still 28.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 840.84ms. Allocated memory is still 69.2MB. Free memory was 38.0MB in the beginning and 43.0MB in the end (delta: -5.0MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.70ms. Allocated memory is still 69.2MB. Free memory was 43.0MB in the beginning and 39.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.79ms. Allocated memory is still 69.2MB. Free memory was 39.6MB in the beginning and 37.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 343.14ms. Allocated memory is still 69.2MB. Free memory was 37.4MB in the beginning and 39.0MB in the end (delta: -1.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 564.97ms. Allocated memory is still 69.2MB. Free memory was 38.4MB in the beginning and 40.4MB in the end (delta: -2.1MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Witness Printer took 3.12ms. Allocated memory is still 69.2MB. Free memory was 40.4MB in the beginning and 40.1MB in the end (delta: 351.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1575] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1575] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL CWE191_Integer_Underflow__int_fgets_predec_67_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_predec_67_structType myStruct; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1569] myStruct.structFirst = data [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_67b_badSink(myStruct) [L1581] EXPR myStruct.structFirst [L1581] int data = myStruct.structFirst; [L1583] --data VAL [data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myStruct={7:0}, unknown-#in~myStruct!structFirst-unknown=-2147483648] - UnprovableResult [Line: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 12:19:42,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93f25675-cd7c-4a0f-9ade-9aa6d18a8df7/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