./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_15_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_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/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_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_15_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/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_93428743-1649-4f7a-928a-4fa8c7a4c4c5/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 681566e7df7311d7645bdb75117aa675d35ca0381f7478d7b5cdbd43e20482f2 --- 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 17:34:15,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:34:15,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:34:16,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:34:16,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:34:16,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:34:16,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:34:16,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:34:16,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:34:16,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:34:16,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:34:16,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:34:16,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:34:16,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:34:16,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:34:16,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:34:16,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:34:16,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:34:16,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:34:16,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:34:16,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:34:16,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:34:16,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:34:16,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:34:16,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:34:16,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:34:16,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:34:16,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:34:16,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:34:16,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:34:16,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:34:16,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:34:16,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:34:16,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:34:16,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:34:16,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:34:16,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:34:16,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:34:16,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:34:16,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:34:16,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:34:16,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 17:34:16,125 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:34:16,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:34:16,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:34:16,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:34:16,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:34:16,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:34:16,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:34:16,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:34:16,128 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:34:16,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:34:16,129 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:34:16,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:34:16,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:34:16,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:34:16,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:34:16,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:34:16,130 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:34:16,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:34:16,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:34:16,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:34:16,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:34:16,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:34:16,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:34:16,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:34:16,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:34:16,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:34:16,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:34:16,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:34:16,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:34:16,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:34:16,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:34:16,132 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:34:16,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:34:16,133 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_93428743-1649-4f7a-928a-4fa8c7a4c4c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 681566e7df7311d7645bdb75117aa675d35ca0381f7478d7b5cdbd43e20482f2 [2022-11-25 17:34:16,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:34:16,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:34:16,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:34:16,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:34:16,427 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:34:16,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_15_bad.i [2022-11-25 17:34:19,573 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:34:20,051 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:34:20,052 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_15_bad.i [2022-11-25 17:34:20,084 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/data/222fc0fbd/7954ab0141fb41b19e01dae7dbcd9a69/FLAG1bc3b7d4d [2022-11-25 17:34:20,103 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/data/222fc0fbd/7954ab0141fb41b19e01dae7dbcd9a69 [2022-11-25 17:34:20,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:34:20,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:34:20,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:34:20,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:34:20,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:34:20,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:34:20" (1/1) ... [2022-11-25 17:34:20,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32905947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:20, skipping insertion in model container [2022-11-25 17:34:20,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:34:20" (1/1) ... [2022-11-25 17:34:20,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:34:20,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:34:20,701 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:34:21,199 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:34:21,204 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:34:21,206 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:34:21,209 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:34:21,210 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:34:21,238 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:34:21,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:34:21,249 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:34:21,270 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:34:21,336 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:34:21,338 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:34:21,340 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:34:21,346 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:34:21,348 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:34:21,357 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:34:21,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:34:21,512 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:34:21,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21 WrapperNode [2022-11-25 17:34:21,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:34:21,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:34:21,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:34:21,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:34:21,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,603 INFO L138 Inliner]: procedures = 499, calls = 63, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2022-11-25 17:34:21,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:34:21,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:34:21,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:34:21,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:34:21,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,660 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:34:21,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:34:21,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:34:21,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:34:21,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (1/1) ... [2022-11-25 17:34:21,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:34:21,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:34:21,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:34:21,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:34:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:34:21,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:34:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:34:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:34:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:34:21,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:34:21,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:34:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:34:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:34:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:34:21,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:34:22,047 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:34:22,049 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:34:22,241 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:34:22,252 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:34:22,257 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:34:22,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:34:22 BoogieIcfgContainer [2022-11-25 17:34:22,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:34:22,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:34:22,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:34:22,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:34:22,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:34:20" (1/3) ... [2022-11-25 17:34:22,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d762d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:34:22, skipping insertion in model container [2022-11-25 17:34:22,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:34:21" (2/3) ... [2022-11-25 17:34:22,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d762d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:34:22, skipping insertion in model container [2022-11-25 17:34:22,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:34:22" (3/3) ... [2022-11-25 17:34:22,274 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_sub_15_bad.i [2022-11-25 17:34:22,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:34:22,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:34:22,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:34:22,371 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;@746968dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:34:22,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:34:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 17:34:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 17:34:22,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:34:22,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:34:22,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:34:22,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:34:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1594199403, now seen corresponding path program 1 times [2022-11-25 17:34:22,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:34:22,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425718120] [2022-11-25 17:34:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:34:22,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:34:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:34:22,644 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:34:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:34:22,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:34:22,735 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:34:22,737 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:34:22,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:34:22,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:34:22,744 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:34:22,751 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:34:22,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:34:22 BoogieIcfgContainer [2022-11-25 17:34:22,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:34:22,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:34:22,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:34:22,811 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:34:22,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:34:22" (3/4) ... [2022-11-25 17:34:22,815 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 17:34:22,890 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:34:22,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:34:22,893 INFO L158 Benchmark]: Toolchain (without parser) took 2780.52ms. Allocated memory is still 159.4MB. Free memory was 125.4MB in the beginning and 99.4MB in the end (delta: 26.1MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2022-11-25 17:34:22,893 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:34:22,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1399.80ms. Allocated memory is still 159.4MB. Free memory was 125.4MB in the beginning and 62.8MB in the end (delta: 62.7MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2022-11-25 17:34:22,894 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.67ms. Allocated memory is still 159.4MB. Free memory was 62.8MB in the beginning and 60.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:34:22,895 INFO L158 Benchmark]: Boogie Preprocessor took 59.16ms. Allocated memory is still 159.4MB. Free memory was 60.2MB in the beginning and 58.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:34:22,896 INFO L158 Benchmark]: RCFGBuilder took 596.52ms. Allocated memory is still 159.4MB. Free memory was 58.6MB in the beginning and 120.3MB in the end (delta: -61.7MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2022-11-25 17:34:22,896 INFO L158 Benchmark]: TraceAbstraction took 545.80ms. Allocated memory is still 159.4MB. Free memory was 119.5MB in the beginning and 102.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:34:22,899 INFO L158 Benchmark]: Witness Printer took 81.67ms. Allocated memory is still 159.4MB. Free memory was 102.6MB in the beginning and 99.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:34:22,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1399.80ms. Allocated memory is still 159.4MB. Free memory was 125.4MB in the beginning and 62.8MB in the end (delta: 62.7MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.67ms. Allocated memory is still 159.4MB. Free memory was 62.8MB in the beginning and 60.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.16ms. Allocated memory is still 159.4MB. Free memory was 60.2MB in the beginning and 58.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 596.52ms. Allocated memory is still 159.4MB. Free memory was 58.6MB in the beginning and 120.3MB in the end (delta: -61.7MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 545.80ms. Allocated memory is still 159.4MB. Free memory was 119.5MB in the beginning and 102.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 81.67ms. Allocated memory is still 159.4MB. Free memory was 102.6MB in the beginning and 99.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1565]: integer overflow possible integer overflow possible We found a 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] [L1577] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1577] RET printLine("Calling bad()...") VAL [\old(argc)=1073741830, argc=1073741830, argv={1073741828:1073741831}, argv={1073741828:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fscanf_sub_15_bad() [L1550] int data; [L1551] data = 0 [L1554] case 6: [L1563] case 7: [L1565] EXPR \read(data) VAL [\read(data)=-2147483648, data={6:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1565] data - 1 VAL [\read(data)=-2147483648, data={6:0}, 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: 1565]: 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, 27 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=27occurred 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 proved your program to be incorrect! [2022-11-25 17:34:22,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93428743-1649-4f7a-928a-4fa8c7a4c4c5/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)