./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_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_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/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_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/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_32019182-441f-49fe-b52b-d08a645f399b/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 a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 --- 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 17:35:49,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:35:49,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:35:49,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:35:49,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:35:49,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:35:49,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:35:49,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:35:49,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:35:49,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:35:49,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:35:49,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:35:49,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:35:49,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:35:49,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:35:49,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:35:49,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:35:49,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:35:49,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:35:49,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:35:49,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:35:49,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:35:49,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:35:49,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:35:49,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:35:49,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:35:49,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:35:49,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:35:49,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:35:49,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:35:49,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:35:49,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:35:49,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:35:49,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:35:49,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:35:49,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:35:49,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:35:49,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:35:49,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:35:49,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:35:49,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:35:49,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 17:35:50,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:35:50,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:35:50,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:35:50,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:35:50,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:35:50,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:35:50,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:35:50,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:35:50,029 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:35:50,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:35:50,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:35:50,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:35:50,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:35:50,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:35:50,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:35:50,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:35:50,031 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:35:50,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:35:50,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:35:50,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:35:50,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:35:50,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:35:50,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:35:50,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:35:50,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:35:50,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:35:50,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:35:50,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:35:50,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:35:50,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:35:50,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:35:50,035 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:35:50,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:35:50,036 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_32019182-441f-49fe-b52b-d08a645f399b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 [2022-11-25 17:35:50,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:35:50,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:35:50,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:35:50,375 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:35:50,376 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:35:50,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2022-11-25 17:35:53,412 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:35:53,771 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:35:53,773 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2022-11-25 17:35:53,804 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/data/eb42be212/d2c139731c1b4bf8a74761ce82b46b12/FLAGceefcc973 [2022-11-25 17:35:53,821 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/data/eb42be212/d2c139731c1b4bf8a74761ce82b46b12 [2022-11-25 17:35:53,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:35:53,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:35:53,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:35:53,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:35:53,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:35:53,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:35:53" (1/1) ... [2022-11-25 17:35:53,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e98f3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:53, skipping insertion in model container [2022-11-25 17:35:53,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:35:53" (1/1) ... [2022-11-25 17:35:53,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:35:53,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:35:54,289 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:35:54,819 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:35:54,824 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:35:54,827 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:35:54,829 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:35:54,830 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:35:54,857 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:35:54,865 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:35:54,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:35:54,879 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:35:54,898 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:35:54,942 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:35:54,944 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:35:54,946 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:35:54,948 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:35:54,949 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:35:54,954 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:35:54,955 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:35:54,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:35:55,140 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:35:55,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55 WrapperNode [2022-11-25 17:35:55,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:35:55,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:35:55,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:35:55,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:35:55,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,223 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2022-11-25 17:35:55,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:35:55,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:35:55,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:35:55,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:35:55,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:35:55,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:35:55,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:35:55,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:35:55,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (1/1) ... [2022-11-25 17:35:55,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:35:55,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:35:55,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:35:55,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:35:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 17:35:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:35:55,338 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:35:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:35:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 17:35:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:35:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:35:55,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:35:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:35:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:35:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:35:55,575 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:35:55,577 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:35:55,722 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:35:55,728 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:35:55,729 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:35:55,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:35:55 BoogieIcfgContainer [2022-11-25 17:35:55,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:35:55,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:35:55,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:35:55,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:35:55,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:35:53" (1/3) ... [2022-11-25 17:35:55,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c2b8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:35:55, skipping insertion in model container [2022-11-25 17:35:55,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:35:55" (2/3) ... [2022-11-25 17:35:55,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c2b8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:35:55, skipping insertion in model container [2022-11-25 17:35:55,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:35:55" (3/3) ... [2022-11-25 17:35:55,751 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2022-11-25 17:35:55,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:35:55,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:35:55,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:35:55,826 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;@6421b49b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:35:55,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:35:55,830 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) [2022-11-25 17:35:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 17:35:55,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:55,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:35:55,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:35:55,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-25 17:35:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:35:55,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020679249] [2022-11-25 17:35:55,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:55,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:35:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:35:56,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:35:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:35:56,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:35:56,072 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:35:56,073 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:35:56,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:35:56,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:35:56,080 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:35:56,084 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:35:56,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:35:56 BoogieIcfgContainer [2022-11-25 17:35:56,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:35:56,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:35:56,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:35:56,110 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:35:56,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:35:55" (3/4) ... [2022-11-25 17:35:56,114 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:35:56,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:35:56,115 INFO L158 Benchmark]: Toolchain (without parser) took 2288.81ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 104.1MB in the beginning and 109.1MB in the end (delta: -5.0MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2022-11-25 17:35:56,116 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:35:56,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1312.42ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 104.1MB in the beginning and 144.7MB in the end (delta: -40.6MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2022-11-25 17:35:56,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.52ms. Allocated memory is still 201.3MB. Free memory was 144.7MB in the beginning and 141.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:35:56,118 INFO L158 Benchmark]: Boogie Preprocessor took 25.85ms. Allocated memory is still 201.3MB. Free memory was 141.6MB in the beginning and 139.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:35:56,118 INFO L158 Benchmark]: RCFGBuilder took 491.69ms. Allocated memory is still 201.3MB. Free memory was 139.5MB in the beginning and 126.8MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:35:56,119 INFO L158 Benchmark]: TraceAbstraction took 364.06ms. Allocated memory is still 201.3MB. Free memory was 125.9MB in the beginning and 109.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:35:56,119 INFO L158 Benchmark]: Witness Printer took 4.24ms. Allocated memory is still 201.3MB. Free memory is still 109.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:35:56,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1312.42ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 104.1MB in the beginning and 144.7MB in the end (delta: -40.6MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.52ms. Allocated memory is still 201.3MB. Free memory was 144.7MB in the beginning and 141.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.85ms. Allocated memory is still 201.3MB. Free memory was 141.6MB in the beginning and 139.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.69ms. Allocated memory is still 201.3MB. Free memory was 139.5MB in the beginning and 126.8MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 364.06ms. Allocated memory is still 201.3MB. Free memory was 125.9MB in the beginning and 109.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.24ms. Allocated memory is still 201.3MB. Free memory is still 109.1MB. 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: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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); [L1549] int CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=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) [L1573] RET printLine("Calling bad()...") VAL [\old(argc)=1073741828, argc=1073741828, argv={1073741827:1073741830}, argv={1073741827:1073741830}, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] CALL CWE191_Integer_Underflow__int_fgets_predec_68_bad() [L1554] int data; [L1555] data = 0 [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1567] CWE191_Integer_Underflow__int_fgets_predec_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_predec_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_predec_68_badData; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, 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] [L1585] --data VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, 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: 1585]: 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, 0.1s 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 [2022-11-25 17:35:56,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/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_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/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_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/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_32019182-441f-49fe-b52b-d08a645f399b/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 a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 --- 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 17:35:58,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:35:58,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:35:58,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:35:58,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:35:58,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:35:58,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:35:58,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:35:58,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:35:58,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:35:58,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:35:58,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:35:58,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:35:58,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:35:58,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:35:58,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:35:58,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:35:58,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:35:58,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:35:58,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:35:58,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:35:58,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:35:58,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:35:58,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:35:58,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:35:58,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:35:58,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:35:58,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:35:58,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:35:58,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:35:58,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:35:58,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:35:58,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:35:58,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:35:58,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:35:58,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:35:58,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:35:58,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:35:58,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:35:58,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:35:58,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:35:58,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-25 17:35:58,708 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:35:58,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:35:58,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:35:58,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:35:58,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:35:58,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:35:58,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:35:58,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:35:58,712 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:35:58,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:35:58,713 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:35:58,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:35:58,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:35:58,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:35:58,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:35:58,714 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:35:58,714 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:35:58,714 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:35:58,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:35:58,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:35:58,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:35:58,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:35:58,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:35:58,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:35:58,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:35:58,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:35:58,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:35:58,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:35:58,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:35:58,716 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:35:58,717 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:35:58,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:35:58,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:35:58,717 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:35:58,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:35:58,718 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:35:58,718 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_32019182-441f-49fe-b52b-d08a645f399b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 [2022-11-25 17:35:59,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:35:59,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:35:59,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:35:59,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:35:59,112 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:35:59,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2022-11-25 17:36:02,322 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:36:02,673 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:36:02,673 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2022-11-25 17:36:02,693 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/data/4fcc5b90e/c1f48b226dbc472dbd17b6da4a641049/FLAG467047b81 [2022-11-25 17:36:02,715 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/data/4fcc5b90e/c1f48b226dbc472dbd17b6da4a641049 [2022-11-25 17:36:02,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:36:02,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:36:02,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:36:02,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:36:02,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:36:02,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:36:02" (1/1) ... [2022-11-25 17:36:02,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694c3923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:02, skipping insertion in model container [2022-11-25 17:36:02,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:36:02" (1/1) ... [2022-11-25 17:36:02,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:36:02,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:36:03,210 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:36:03,675 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:36:03,681 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:36:03,683 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:36:03,685 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:36:03,686 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:36:03,706 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:36:03,708 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:36:03,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:36:03,728 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:36:03,747 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:36:03,809 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:36:03,810 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:36:03,811 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:36:03,814 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:36:03,814 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:36:03,819 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:36:03,820 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:36:03,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:36:03,936 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:36:03,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03 WrapperNode [2022-11-25 17:36:03,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:36:03,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:36:03,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:36:03,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:36:03,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:03,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:03,995 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2022-11-25 17:36:03,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:36:03,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:36:03,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:36:03,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:36:04,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:04,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:04,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:04,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:04,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:04,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:04,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:04,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:04,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:36:04,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:36:04,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:36:04,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:36:04,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (1/1) ... [2022-11-25 17:36:04,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:36:04,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:36:04,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:36:04,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:36:04,117 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 17:36:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:36:04,118 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:36:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:36:04,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:36:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:36:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:36:04,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:36:04,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:36:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:36:04,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 17:36:04,292 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:36:04,294 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:36:04,533 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:36:04,554 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:36:04,555 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:36:04,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:36:04 BoogieIcfgContainer [2022-11-25 17:36:04,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:36:04,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:36:04,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:36:04,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:36:04,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:36:02" (1/3) ... [2022-11-25 17:36:04,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a74d91c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:36:04, skipping insertion in model container [2022-11-25 17:36:04,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:36:03" (2/3) ... [2022-11-25 17:36:04,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a74d91c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:36:04, skipping insertion in model container [2022-11-25 17:36:04,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:36:04" (3/3) ... [2022-11-25 17:36:04,565 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2022-11-25 17:36:04,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:36:04,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:36:04,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:36:04,647 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;@9da341, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:36:04,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:36:04,651 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) [2022-11-25 17:36:04,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 17:36:04,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:36:04,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:36:04,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:36:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:36:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-11-25 17:36:04,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:36:04,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039535964] [2022-11-25 17:36:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:04,679 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 17:36:04,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:36:04,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/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 17:36:04,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/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 17:36:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:36:04,897 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:36:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:36:04,975 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 17:36:04,978 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:36:04,979 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:36:04,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:36:04,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/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)] Ended with exit code 0 [2022-11-25 17:36:05,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/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 17:36:05,197 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:36:05,201 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:36:05,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:36:05 BoogieIcfgContainer [2022-11-25 17:36:05,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:36:05,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:36:05,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:36:05,249 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:36:05,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:36:04" (3/4) ... [2022-11-25 17:36:05,253 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:36:05,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:36:05,254 INFO L158 Benchmark]: Toolchain (without parser) took 2531.79ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 33.8MB in the beginning and 33.4MB in the end (delta: 442.2kB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2022-11-25 17:36:05,255 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:36:05,256 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1211.47ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 33.6MB in the beginning and 47.0MB in the end (delta: -13.4MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2022-11-25 17:36:05,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.35ms. Allocated memory is still 83.9MB. Free memory was 47.0MB in the beginning and 44.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:36:05,257 INFO L158 Benchmark]: Boogie Preprocessor took 31.59ms. Allocated memory is still 83.9MB. Free memory was 44.1MB in the beginning and 42.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:36:05,257 INFO L158 Benchmark]: RCFGBuilder took 528.51ms. Allocated memory is still 83.9MB. Free memory was 42.0MB in the beginning and 51.5MB in the end (delta: -9.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:36:05,258 INFO L158 Benchmark]: TraceAbstraction took 679.24ms. Allocated memory is still 83.9MB. Free memory was 51.0MB in the beginning and 33.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:36:05,258 INFO L158 Benchmark]: Witness Printer took 14.45ms. Allocated memory is still 83.9MB. Free memory was 33.8MB in the beginning and 33.4MB in the end (delta: 474.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:36:05,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1211.47ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 33.6MB in the beginning and 47.0MB in the end (delta: -13.4MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.35ms. Allocated memory is still 83.9MB. Free memory was 47.0MB in the beginning and 44.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.59ms. Allocated memory is still 83.9MB. Free memory was 44.1MB in the beginning and 42.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 528.51ms. Allocated memory is still 83.9MB. Free memory was 42.0MB in the beginning and 51.5MB in the end (delta: -9.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 679.24ms. Allocated memory is still 83.9MB. Free memory was 51.0MB in the beginning and 33.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 14.45ms. Allocated memory is still 83.9MB. Free memory was 33.8MB in the beginning and 33.4MB in the end (delta: 474.0kB). 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: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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_68_badData; [L1549] int CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=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) [L1573] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, CWE191_Integer_Underflow__int_fgets_predec_68_badData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] CALL CWE191_Integer_Underflow__int_fgets_predec_68_bad() [L1554] int data; [L1555] data = 0 [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1567] CWE191_Integer_Underflow__int_fgets_predec_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_predec_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_predec_68_badData; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, 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] [L1585] --data VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, 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: 1585]: 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: 0.6s, 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=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 [2022-11-25 17:36:05,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32019182-441f-49fe-b52b-d08a645f399b/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