./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_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_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/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_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/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_bb79f582-7393-4e99-a1d2-8b251e337570/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 2d28e1504773aa93ecb1bdb3ae742961472b0ee47b3aedcde912d309fad9f6bf --- 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 16:40:42,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:40:42,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:40:42,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:40:42,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:40:42,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:40:42,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:40:42,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:40:42,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:40:42,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:40:42,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:40:42,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:40:42,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:40:42,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:40:42,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:40:42,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:40:42,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:40:42,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:40:42,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:40:42,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:40:42,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:40:42,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:40:42,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:40:42,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:40:42,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:40:42,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:40:42,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:40:42,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:40:42,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:40:42,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:40:42,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:40:42,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:40:42,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:40:42,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:40:42,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:40:42,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:40:42,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:40:42,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:40:42,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:40:42,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:40:42,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:40:42,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 16:40:42,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:40:42,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:40:42,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:40:42,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:40:42,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:40:42,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:40:42,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:40:42,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:40:42,802 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:40:42,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:40:42,803 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:40:42,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:40:42,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:40:42,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:40:42,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:40:42,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:40:42,805 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:40:42,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:40:42,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:40:42,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:40:42,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:40:42,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:40:42,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:40:42,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:40:42,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:40:42,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:40:42,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:40:42,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:40:42,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:40:42,809 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:40:42,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:40:42,810 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:40:42,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:40:42,811 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_bb79f582-7393-4e99-a1d2-8b251e337570/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d28e1504773aa93ecb1bdb3ae742961472b0ee47b3aedcde912d309fad9f6bf [2022-11-25 16:40:43,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:40:43,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:40:43,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:40:43,197 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:40:43,197 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:40:43,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i [2022-11-25 16:40:46,267 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:40:46,595 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:40:46,596 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i [2022-11-25 16:40:46,618 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/data/e88968937/20d268e07b514a05962e81b8942224a8/FLAG97ce6124f [2022-11-25 16:40:46,636 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/data/e88968937/20d268e07b514a05962e81b8942224a8 [2022-11-25 16:40:46,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:40:46,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:40:46,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:40:46,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:40:46,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:40:46,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:40:46" (1/1) ... [2022-11-25 16:40:46,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f2f329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:46, skipping insertion in model container [2022-11-25 16:40:46,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:40:46" (1/1) ... [2022-11-25 16:40:46,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:40:46,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:40:47,293 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 16:40:47,864 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:40:47,870 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:40:47,873 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:40:47,875 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:40:47,876 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:40:47,903 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 16:40:47,905 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 16:40:47,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:40:47,919 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:40:47,939 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 16:40:47,978 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:40:47,980 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:40:47,981 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:40:47,983 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:40:47,984 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:40:47,988 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 16:40:47,990 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 16:40:47,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:40:48,122 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:40:48,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48 WrapperNode [2022-11-25 16:40:48,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:40:48,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:40:48,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:40:48,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:40:48,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,231 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2022-11-25 16:40:48,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:40:48,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:40:48,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:40:48,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:40:48,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,286 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:40:48,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:40:48,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:40:48,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:40:48,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (1/1) ... [2022-11-25 16:40:48,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:40:48,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:40:48,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:40:48,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:40:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 16:40:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 16:40:48,402 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 16:40:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:40:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 16:40:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:40:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:40:48,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:40:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:40:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 16:40:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:40:48,560 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:40:48,576 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:40:48,793 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:40:48,799 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:40:48,800 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 16:40:48,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:40:48 BoogieIcfgContainer [2022-11-25 16:40:48,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:40:48,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:40:48,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:40:48,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:40:48,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:40:46" (1/3) ... [2022-11-25 16:40:48,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4958c319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:40:48, skipping insertion in model container [2022-11-25 16:40:48,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:48" (2/3) ... [2022-11-25 16:40:48,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4958c319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:40:48, skipping insertion in model container [2022-11-25 16:40:48,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:40:48" (3/3) ... [2022-11-25 16:40:48,822 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i [2022-11-25 16:40:48,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:40:48,844 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 16:40:48,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:40:48,920 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;@2fbe2cc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:40:48,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 16:40:48,925 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 16:40:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 16:40:48,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:40:48,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:40:48,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 16:40:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:40:48,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2022-11-25 16:40:48,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:40:48,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658287449] [2022-11-25 16:40:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:40:48,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:40:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:40:49,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:40:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:40:49,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:40:49,250 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:40:49,252 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 16:40:49,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 16:40:49,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:40:49,262 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 16:40:49,271 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 16:40:49,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:40:49 BoogieIcfgContainer [2022-11-25 16:40:49,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 16:40:49,325 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:40:49,325 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:40:49,326 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:40:49,326 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:40:48" (3/4) ... [2022-11-25 16:40:49,331 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 16:40:49,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:40:49,334 INFO L158 Benchmark]: Toolchain (without parser) took 2690.41ms. Allocated memory is still 130.0MB. Free memory was 74.7MB in the beginning and 65.7MB in the end (delta: 9.0MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-11-25 16:40:49,335 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:40:49,336 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1477.84ms. Allocated memory is still 130.0MB. Free memory was 74.7MB in the beginning and 52.4MB in the end (delta: 22.3MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2022-11-25 16:40:49,336 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.36ms. Allocated memory is still 130.0MB. Free memory was 52.4MB in the beginning and 97.9MB in the end (delta: -45.5MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2022-11-25 16:40:49,338 INFO L158 Benchmark]: Boogie Preprocessor took 68.66ms. Allocated memory is still 130.0MB. Free memory was 97.9MB in the beginning and 96.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:40:49,343 INFO L158 Benchmark]: RCFGBuilder took 498.30ms. Allocated memory is still 130.0MB. Free memory was 96.5MB in the beginning and 83.2MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 16:40:49,343 INFO L158 Benchmark]: TraceAbstraction took 519.80ms. Allocated memory is still 130.0MB. Free memory was 83.2MB in the beginning and 65.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 16:40:49,344 INFO L158 Benchmark]: Witness Printer took 6.80ms. Allocated memory is still 130.0MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:40:49,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 130.0MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1477.84ms. Allocated memory is still 130.0MB. Free memory was 74.7MB in the beginning and 52.4MB in the end (delta: 22.3MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.36ms. Allocated memory is still 130.0MB. Free memory was 52.4MB in the beginning and 97.9MB in the end (delta: -45.5MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.66ms. Allocated memory is still 130.0MB. Free memory was 97.9MB in the beginning and 96.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 498.30ms. Allocated memory is still 130.0MB. Free memory was 96.5MB in the beginning and 83.2MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 519.80ms. Allocated memory is still 130.0MB. Free memory was 83.2MB in the beginning and 65.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 6.80ms. Allocated memory is still 130.0MB. Free memory is still 65.7MB. 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: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1574. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1563] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1563] RET printLine("Calling bad()...") VAL [\old(argc)=1073741829, argc=1073741829, argv={1073741828:1073741830}, argv={1073741828:1073741830}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_61_bad() [L1551] int data; [L1552] data = 0 [L1553] CALL, EXPR CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1572] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1574] data = atoi(inputBuffer) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1581] return data; VAL [\old(data)=0, \result=-2147483648, 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] [L1553] RET, EXPR CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1553] data = CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1555] data-- VAL [data=-2147483648, 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: 1555]: 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: 0.4s, 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, 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 16:40:49,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/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_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/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_bb79f582-7393-4e99-a1d2-8b251e337570/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 2d28e1504773aa93ecb1bdb3ae742961472b0ee47b3aedcde912d309fad9f6bf --- 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 16:40:51,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:40:51,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:40:52,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:40:52,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:40:52,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:40:52,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:40:52,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:40:52,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:40:52,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:40:52,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:40:52,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:40:52,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:40:52,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:40:52,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:40:52,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:40:52,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:40:52,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:40:52,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:40:52,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:40:52,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:40:52,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:40:52,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:40:52,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:40:52,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:40:52,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:40:52,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:40:52,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:40:52,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:40:52,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:40:52,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:40:52,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:40:52,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:40:52,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:40:52,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:40:52,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:40:52,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:40:52,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:40:52,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:40:52,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:40:52,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:40:52,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-25 16:40:52,162 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:40:52,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:40:52,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:40:52,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:40:52,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:40:52,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:40:52,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:40:52,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:40:52,168 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:40:52,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:40:52,169 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:40:52,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:40:52,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:40:52,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:40:52,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:40:52,171 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 16:40:52,171 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 16:40:52,171 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:40:52,172 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 16:40:52,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:40:52,172 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:40:52,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:40:52,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:40:52,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:40:52,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:40:52,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:40:52,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:40:52,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:40:52,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:40:52,175 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 16:40:52,175 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 16:40:52,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:40:52,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:40:52,176 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:40:52,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:40:52,177 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 16:40:52,177 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_bb79f582-7393-4e99-a1d2-8b251e337570/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d28e1504773aa93ecb1bdb3ae742961472b0ee47b3aedcde912d309fad9f6bf [2022-11-25 16:40:52,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:40:52,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:40:52,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:40:52,674 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:40:52,674 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:40:52,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i [2022-11-25 16:40:56,039 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:40:56,430 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:40:56,434 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i [2022-11-25 16:40:56,466 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/data/97092e30a/4362ba63aba643ec99d69c5ac9d98f3a/FLAG0019df851 [2022-11-25 16:40:56,492 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/data/97092e30a/4362ba63aba643ec99d69c5ac9d98f3a [2022-11-25 16:40:56,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:40:56,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:40:56,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:40:56,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:40:56,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:40:56,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:40:56" (1/1) ... [2022-11-25 16:40:56,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b97da60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:56, skipping insertion in model container [2022-11-25 16:40:56,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:40:56" (1/1) ... [2022-11-25 16:40:56,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:40:56,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:40:57,064 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 16:40:57,663 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:40:57,669 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:40:57,671 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:40:57,673 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:40:57,674 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:40:57,699 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 16:40:57,702 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 16:40:57,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:40:57,720 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:40:57,740 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 16:40:57,787 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:40:57,788 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:40:57,790 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:40:57,792 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:40:57,793 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:40:57,796 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 16:40:57,799 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 16:40:57,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:40:57,925 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:40:57,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57 WrapperNode [2022-11-25 16:40:57,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:40:57,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:40:57,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:40:57,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:40:57,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:57,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:58,014 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2022-11-25 16:40:58,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:40:58,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:40:58,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:40:58,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:40:58,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:58,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:58,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:58,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:58,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:58,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:58,044 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:58,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:58,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:40:58,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:40:58,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:40:58,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:40:58,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (1/1) ... [2022-11-25 16:40:58,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:40:58,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:40:58,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:40:58,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:40:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 16:40:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 16:40:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 16:40:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:40:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 16:40:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:40:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:40:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:40:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:40:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 16:40:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 16:40:58,338 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:40:58,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:40:58,553 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:40:58,560 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:40:58,566 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 16:40:58,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:40:58 BoogieIcfgContainer [2022-11-25 16:40:58,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:40:58,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:40:58,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:40:58,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:40:58,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:40:56" (1/3) ... [2022-11-25 16:40:58,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa64567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:40:58, skipping insertion in model container [2022-11-25 16:40:58,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:40:57" (2/3) ... [2022-11-25 16:40:58,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa64567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:40:58, skipping insertion in model container [2022-11-25 16:40:58,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:40:58" (3/3) ... [2022-11-25 16:40:58,590 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i [2022-11-25 16:40:58,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:40:58,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 16:40:58,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:40:58,667 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;@34d7fb44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:40:58,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 16:40:58,672 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 16:40:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 16:40:58,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:40:58,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:40:58,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 16:40:58,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:40:58,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1091945264, now seen corresponding path program 1 times [2022-11-25 16:40:58,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 16:40:58,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109892436] [2022-11-25 16:40:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:40:58,704 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 16:40:58,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 16:40:58,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/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 16:40:58,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/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 16:40:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:40:58,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:40:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:40:59,065 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 16:40:59,068 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:40:59,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 16:40:59,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 16:40:59,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/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 16:40:59,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/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 16:40:59,292 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 16:40:59,297 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 16:40:59,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:40:59 BoogieIcfgContainer [2022-11-25 16:40:59,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 16:40:59,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:40:59,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:40:59,347 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:40:59,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:40:58" (3/4) ... [2022-11-25 16:40:59,351 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 16:40:59,351 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:40:59,353 INFO L158 Benchmark]: Toolchain (without parser) took 2856.21ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 57.9MB in the beginning and 64.8MB in the end (delta: -6.9MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-11-25 16:40:59,353 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 69.2MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:40:59,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1427.15ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 37.6MB in the end (delta: 20.3MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2022-11-25 16:40:59,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.62ms. Allocated memory is still 83.9MB. Free memory was 37.6MB in the beginning and 34.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 16:40:59,355 INFO L158 Benchmark]: Boogie Preprocessor took 43.32ms. Allocated memory is still 83.9MB. Free memory was 34.6MB in the beginning and 57.0MB in the end (delta: -22.4MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-11-25 16:40:59,356 INFO L158 Benchmark]: RCFGBuilder took 512.70ms. Allocated memory is still 83.9MB. Free memory was 57.0MB in the beginning and 43.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 16:40:59,357 INFO L158 Benchmark]: TraceAbstraction took 770.96ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 42.3MB in the beginning and 64.8MB in the end (delta: -22.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:40:59,357 INFO L158 Benchmark]: Witness Printer took 5.88ms. Allocated memory is still 100.7MB. Free memory is still 64.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:40:59,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 69.2MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1427.15ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 37.6MB in the end (delta: 20.3MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.62ms. Allocated memory is still 83.9MB. Free memory was 37.6MB in the beginning and 34.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.32ms. Allocated memory is still 83.9MB. Free memory was 34.6MB in the beginning and 57.0MB in the end (delta: -22.4MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * RCFGBuilder took 512.70ms. Allocated memory is still 83.9MB. Free memory was 57.0MB in the beginning and 43.1MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 770.96ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 42.3MB in the beginning and 64.8MB in the end (delta: -22.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.88ms. Allocated memory is still 100.7MB. Free memory is still 64.8MB. 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: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1574. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1563] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1563] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_61_bad() [L1551] int data; [L1552] data = 0 [L1553] CALL, EXPR CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1572] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1574] data = atoi(inputBuffer) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1581] return data; VAL [\old(data)=0, \result=-2147483648, 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] [L1553] RET, EXPR CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1553] data = CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1555] data-- VAL [data=-2147483648, 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: 1555]: 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, 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 16:40:59,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb79f582-7393-4e99-a1d2-8b251e337570/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