./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:52:21,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:52:21,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:52:21,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:52:21,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:52:21,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:52:21,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:52:21,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:52:21,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:52:21,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:52:21,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:52:21,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:52:21,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:52:21,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:52:21,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:52:21,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:52:21,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:52:21,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:52:21,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:52:21,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:52:21,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:52:21,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:52:21,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:52:21,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:52:21,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:52:21,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:52:21,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:52:21,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:52:21,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:52:21,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:52:21,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:52:21,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:52:21,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:52:21,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:52:21,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:52:21,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:52:21,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:52:21,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:52:21,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:52:21,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:52:21,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:52:21,849 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 17:52:21,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:52:21,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:52:21,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:52:21,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:52:21,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:52:21,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:52:21,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:52:21,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:52:21,896 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:52:21,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:52:21,897 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:52:21,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:52:21,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:52:21,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:52:21,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:52:21,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:52:21,898 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:52:21,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:52:21,898 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:52:21,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:52:21,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:52:21,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:52:21,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:52:21,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:52:21,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:52:21,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:52:21,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:52:21,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:52:21,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:52:21,901 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:52:21,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:52:21,902 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:52:21,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:52:21,902 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_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 [2022-11-25 17:52:22,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:52:22,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:52:22,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:52:22,286 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:52:22,286 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:52:22,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2022-11-25 17:52:25,396 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:52:25,792 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:52:25,794 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2022-11-25 17:52:25,819 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/data/0688788eb/c87a2d05dffb414598bc04912a961953/FLAG78a32c3f9 [2022-11-25 17:52:25,839 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/data/0688788eb/c87a2d05dffb414598bc04912a961953 [2022-11-25 17:52:25,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:52:25,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:52:25,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:25,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:52:25,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:52:25,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:25" (1/1) ... [2022-11-25 17:52:25,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1907e3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:25, skipping insertion in model container [2022-11-25 17:52:25,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:25" (1/1) ... [2022-11-25 17:52:25,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:52:25,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:52:26,354 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:52:26,893 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:52:26,904 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:52:26,911 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:52:26,920 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:52:26,921 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:52:26,948 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:52:26,955 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:52:26,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:26,969 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:52:26,986 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:52:27,054 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:52:27,065 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:52:27,066 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:52:27,069 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:52:27,069 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:52:27,074 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:52:27,075 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:52:27,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:27,298 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:52:27,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27 WrapperNode [2022-11-25 17:52:27,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:27,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:27,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:52:27,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:52:27,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,386 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-11-25 17:52:27,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:27,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:52:27,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:52:27,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:52:27,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,443 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:52:27,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:52:27,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:52:27,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:52:27,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (1/1) ... [2022-11-25 17:52:27,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:52:27,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:27,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:27,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:52:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 17:52:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:52:27,537 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:52:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:52:27,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 17:52:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:52:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:52:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:52:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:52:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:52:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:52:27,746 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:52:27,756 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:52:27,887 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:52:27,893 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:52:27,893 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:52:27,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:27 BoogieIcfgContainer [2022-11-25 17:52:27,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:52:27,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:52:27,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:52:27,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:52:27,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:52:25" (1/3) ... [2022-11-25 17:52:27,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bb15aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:27, skipping insertion in model container [2022-11-25 17:52:27,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:27" (2/3) ... [2022-11-25 17:52:27,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bb15aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:27, skipping insertion in model container [2022-11-25 17:52:27,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:27" (3/3) ... [2022-11-25 17:52:27,904 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2022-11-25 17:52:27,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:52:27,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:52:27,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:52:27,980 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;@720706ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:52:27,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:52:27,985 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) [2022-11-25 17:52:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 17:52:27,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:27,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:27,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:52:28,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2022-11-25 17:52:28,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:28,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106147544] [2022-11-25 17:52:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:28,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:28,173 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:28,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:52:28,242 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:52:28,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:52:28,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:52:28,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:52:28,251 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:52:28,257 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:52:28,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:52:28 BoogieIcfgContainer [2022-11-25 17:52:28,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:52:28,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:52:28,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:52:28,312 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:52:28,314 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:27" (3/4) ... [2022-11-25 17:52:28,317 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:52:28,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:52:28,318 INFO L158 Benchmark]: Toolchain (without parser) took 2471.67ms. Allocated memory was 153.1MB in the beginning and 216.0MB in the end (delta: 62.9MB). Free memory was 102.2MB in the beginning and 140.0MB in the end (delta: -37.7MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,318 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 153.1MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:52:28,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1452.31ms. Allocated memory was 153.1MB in the beginning and 216.0MB in the end (delta: 62.9MB). Free memory was 102.2MB in the beginning and 175.6MB in the end (delta: -73.4MB). Peak memory consumption was 72.3MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,320 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.32ms. Allocated memory is still 216.0MB. Free memory was 175.6MB in the beginning and 173.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,320 INFO L158 Benchmark]: Boogie Preprocessor took 58.93ms. Allocated memory is still 216.0MB. Free memory was 173.5MB in the beginning and 170.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,321 INFO L158 Benchmark]: RCFGBuilder took 446.61ms. Allocated memory is still 216.0MB. Free memory was 170.8MB in the beginning and 157.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,322 INFO L158 Benchmark]: TraceAbstraction took 411.86ms. Allocated memory is still 216.0MB. Free memory was 156.8MB in the beginning and 140.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:52:28,322 INFO L158 Benchmark]: Witness Printer took 5.05ms. Allocated memory is still 216.0MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:52:28,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 153.1MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1452.31ms. Allocated memory was 153.1MB in the beginning and 216.0MB in the end (delta: 62.9MB). Free memory was 102.2MB in the beginning and 175.6MB in the end (delta: -73.4MB). Peak memory consumption was 72.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.32ms. Allocated memory is still 216.0MB. Free memory was 175.6MB in the beginning and 173.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.93ms. Allocated memory is still 216.0MB. Free memory was 173.5MB in the beginning and 170.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.61ms. Allocated memory is still 216.0MB. Free memory was 170.8MB in the beginning and 157.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 411.86ms. Allocated memory is still 216.0MB. Free memory was 156.8MB in the beginning and 140.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.05ms. Allocated memory is still 216.0MB. Free memory is still 140.0MB. 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 0; VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=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) [L1571] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, argv={1073741827:1073741831}, argv={1073741827:1073741831}, CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_predec_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1565] CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_predec_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal) VAL [\old(data)=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=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] [L1582] --data VAL [\old(data)=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=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: 1582]: 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: 0.3s, 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=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, 0.1s 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 [2022-11-25 17:52:28,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:52:30,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:52:30,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:52:30,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:52:30,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:52:30,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:52:30,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:52:30,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:52:30,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:52:30,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:52:30,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:52:30,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:52:30,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:52:30,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:52:30,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:52:30,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:52:30,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:52:30,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:52:30,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:52:30,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:52:30,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:52:30,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:52:30,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:52:30,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:52:30,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:52:30,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:52:30,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:52:30,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:52:30,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:52:30,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:52:30,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:52:30,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:52:30,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:52:30,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:52:30,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:52:30,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:52:30,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:52:30,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:52:30,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:52:30,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:52:30,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:52:30,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-25 17:52:30,968 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:52:30,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:52:30,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:52:30,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:52:30,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:52:30,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:52:30,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:52:30,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:52:30,975 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:52:30,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:52:30,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:52:30,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:52:30,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:52:30,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:52:30,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:52:30,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:52:30,978 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:52:30,978 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:52:30,978 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:52:30,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:52:30,979 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:52:30,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:52:30,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:52:30,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:52:30,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:52:30,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:52:30,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:52:30,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:52:30,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:52:30,981 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:52:30,982 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:52:30,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:52:30,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:52:30,983 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:52:30,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:52:30,983 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:52:30,983 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_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 [2022-11-25 17:52:31,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:52:31,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:52:31,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:52:31,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:52:31,429 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:52:31,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2022-11-25 17:52:34,744 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:52:35,125 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:52:35,125 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2022-11-25 17:52:35,143 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/data/05af9003e/a2488f220aa74f15a170b3eaa1c10951/FLAG8e793ce66 [2022-11-25 17:52:35,162 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/data/05af9003e/a2488f220aa74f15a170b3eaa1c10951 [2022-11-25 17:52:35,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:52:35,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:52:35,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:35,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:52:35,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:52:35,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:35" (1/1) ... [2022-11-25 17:52:35,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1eba22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:35, skipping insertion in model container [2022-11-25 17:52:35,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:52:35" (1/1) ... [2022-11-25 17:52:35,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:52:35,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:52:35,671 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:52:36,575 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:52:36,581 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:52:36,582 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:52:36,585 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:52:36,586 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:52:36,610 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:52:36,613 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:52:36,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:36,633 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:52:36,653 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:52:36,693 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:52:36,695 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:52:36,696 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:52:36,698 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:52:36,699 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:52:36,702 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:52:36,704 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:52:36,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:52:36,857 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:52:36,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36 WrapperNode [2022-11-25 17:52:36,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:52:36,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:36,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:52:36,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:52:36,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:36,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:36,950 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2022-11-25 17:52:36,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:52:36,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:52:36,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:52:36,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:52:36,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:36,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:36,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:36,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:36,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:36,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:36,981 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:36,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:36,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:52:36,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:52:36,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:52:36,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:52:36,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (1/1) ... [2022-11-25 17:52:37,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:52:37,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:37,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:52:37,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:52:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 17:52:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:52:37,081 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:52:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:52:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:52:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:52:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:52:37,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:52:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:52:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:52:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 17:52:37,246 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:52:37,248 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:52:37,494 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:52:37,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:52:37,504 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:52:37,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:37 BoogieIcfgContainer [2022-11-25 17:52:37,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:52:37,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:52:37,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:52:37,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:52:37,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:52:35" (1/3) ... [2022-11-25 17:52:37,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfb61ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:37, skipping insertion in model container [2022-11-25 17:52:37,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:52:36" (2/3) ... [2022-11-25 17:52:37,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfb61ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:52:37, skipping insertion in model container [2022-11-25 17:52:37,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:37" (3/3) ... [2022-11-25 17:52:37,520 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2022-11-25 17:52:37,541 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:52:37,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:52:37,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:52:37,615 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;@3e352e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:52:37,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:52:37,620 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) [2022-11-25 17:52:37,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 17:52:37,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:37,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:37,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:52:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2022-11-25 17:52:37,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:52:37,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405634659] [2022-11-25 17:52:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:37,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:52:37,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:52:37,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:52:37,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 17:52:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:37,854 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:52:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:52:37,970 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 17:52:37,972 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:52:37,974 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:52:37,976 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:52:38,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:38,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:52:38,205 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:52:38,215 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:52:38,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:52:38 BoogieIcfgContainer [2022-11-25 17:52:38,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:52:38,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:52:38,263 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:52:38,263 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:52:38,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:52:37" (3/4) ... [2022-11-25 17:52:38,268 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:52:38,270 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:52:38,271 INFO L158 Benchmark]: Toolchain (without parser) took 3104.21ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 62.4MB in the beginning and 63.2MB in the end (delta: -798.7kB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2022-11-25 17:52:38,272 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:52:38,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1690.26ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 36.6MB in the end (delta: 25.8MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2022-11-25 17:52:38,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.81ms. Allocated memory is still 83.9MB. Free memory was 36.6MB in the beginning and 57.9MB in the end (delta: -21.3MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2022-11-25 17:52:38,275 INFO L158 Benchmark]: Boogie Preprocessor took 34.97ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 55.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:52:38,275 INFO L158 Benchmark]: RCFGBuilder took 513.25ms. Allocated memory is still 83.9MB. Free memory was 55.8MB in the beginning and 41.6MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:52:38,276 INFO L158 Benchmark]: TraceAbstraction took 745.29ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 41.2MB in the beginning and 63.2MB in the end (delta: -22.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:52:38,276 INFO L158 Benchmark]: Witness Printer took 7.53ms. Allocated memory is still 100.7MB. Free memory is still 63.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:52:38,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 58.7MB. Free memory was 37.3MB in the beginning and 37.2MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1690.26ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 36.6MB in the end (delta: 25.8MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.81ms. Allocated memory is still 83.9MB. Free memory was 36.6MB in the beginning and 57.9MB in the end (delta: -21.3MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.97ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 55.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.25ms. Allocated memory is still 83.9MB. Free memory was 55.8MB in the beginning and 41.6MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 745.29ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 41.2MB in the beginning and 63.2MB in the end (delta: -22.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.53ms. Allocated memory is still 100.7MB. Free memory is still 63.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 0; VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=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) [L1571] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_predec_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1565] CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_predec_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal) VAL [\old(data)=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=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] [L1582] --data VAL [\old(data)=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=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: 1582]: 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: 0.6s, 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 [2022-11-25 17:52:38,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d7c14ca-ad7b-4754-80b2-4b34df6516c7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample