./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_44_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_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/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_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_44_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/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_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/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 be684161f2dd9a695534eef1a269f21752326f2e94a4710ff06139be4b6bb635 --- 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 16:42:15,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:42:15,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:42:15,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:42:15,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:42:15,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:42:15,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:42:15,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:42:15,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:42:15,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:42:15,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:42:15,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:42:15,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:42:15,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:42:15,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:42:15,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:42:15,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:42:15,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:42:15,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:42:15,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:42:15,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:42:15,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:42:15,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:42:15,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:42:15,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:42:15,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:42:15,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:42:15,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:42:15,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:42:15,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:42:15,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:42:15,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:42:15,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:42:15,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:42:15,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:42:15,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:42:15,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:42:15,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:42:15,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:42:15,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:42:15,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:42:15,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 16:42:15,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:42:15,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:42:15,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:42:15,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:42:15,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:42:15,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:42:15,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:42:15,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:42:15,634 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:42:15,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:42:15,636 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:42:15,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:42:15,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:42:15,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:42:15,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:42:15,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:42:15,637 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:42:15,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:42:15,638 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:42:15,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:42:15,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:42:15,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:42:15,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:42:15,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:42:15,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:42:15,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:42:15,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:42:15,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:42:15,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:42:15,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:42:15,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:42:15,643 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:42:15,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:42:15,643 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_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be684161f2dd9a695534eef1a269f21752326f2e94a4710ff06139be4b6bb635 [2022-11-25 16:42:15,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:42:16,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:42:16,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:42:16,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:42:16,030 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:42:16,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_44_bad.i [2022-11-25 16:42:19,181 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:42:19,547 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:42:19,548 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_44_bad.i [2022-11-25 16:42:19,567 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/data/70514580a/b0d78a0d5c7046e1a2b1e5b4c77af813/FLAGd8cfba48a [2022-11-25 16:42:19,583 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/data/70514580a/b0d78a0d5c7046e1a2b1e5b4c77af813 [2022-11-25 16:42:19,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:42:19,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:42:19,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:42:19,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:42:19,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:42:19,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:19" (1/1) ... [2022-11-25 16:42:19,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ec5319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:19, skipping insertion in model container [2022-11-25 16:42:19,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:19" (1/1) ... [2022-11-25 16:42:19,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:42:19,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:42:20,058 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 16:42:20,701 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:42:20,710 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:42:20,714 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:42:20,727 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:42:20,729 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:42:20,768 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 16:42:20,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:42:20,788 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:42:20,826 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 16:42:20,906 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 16:42:20,908 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:42:20,910 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 16:42:20,912 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:42:20,913 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 16:42:20,918 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 16:42:20,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:42:21,088 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:42:21,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21 WrapperNode [2022-11-25 16:42:21,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:42:21,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:42:21,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:42:21,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:42:21,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,190 INFO L138 Inliner]: procedures = 501, calls = 61, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 51 [2022-11-25 16:42:21,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:42:21,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:42:21,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:42:21,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:42:21,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,247 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:42:21,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:42:21,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:42:21,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:42:21,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (1/1) ... [2022-11-25 16:42:21,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:42:21,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:42:21,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:42:21,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:42:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 16:42:21,350 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 16:42:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:42:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:42:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:42:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:42:21,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:42:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:42:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 16:42:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:42:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:42:21,524 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:42:21,541 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:42:21,720 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:42:21,726 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:42:21,727 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 16:42:21,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:21 BoogieIcfgContainer [2022-11-25 16:42:21,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:42:21,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:42:21,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:42:21,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:42:21,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:42:19" (1/3) ... [2022-11-25 16:42:21,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2b2365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:21, skipping insertion in model container [2022-11-25 16:42:21,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:21" (2/3) ... [2022-11-25 16:42:21,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2b2365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:21, skipping insertion in model container [2022-11-25 16:42:21,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:21" (3/3) ... [2022-11-25 16:42:21,739 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_predec_44_bad.i [2022-11-25 16:42:21,760 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:42:21,760 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 16:42:21,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:42:21,820 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;@124b872, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:42:21,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 16:42:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 16:42:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 16:42:21,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:42:21,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:21,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 16:42:21,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:21,841 INFO L85 PathProgramCache]: Analyzing trace with hash -664697225, now seen corresponding path program 1 times [2022-11-25 16:42:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:21,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831095889] [2022-11-25 16:42:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:21,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:42:22,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:42:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:42:22,103 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:42:22,105 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:42:22,106 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 16:42:22,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 16:42:22,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:42:22,121 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 16:42:22,127 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 16:42:22,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:42:22 BoogieIcfgContainer [2022-11-25 16:42:22,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 16:42:22,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:42:22,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:42:22,170 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:42:22,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:21" (3/4) ... [2022-11-25 16:42:22,173 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 16:42:22,254 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 16:42:22,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:42:22,255 INFO L158 Benchmark]: Toolchain (without parser) took 2668.39ms. Allocated memory is still 180.4MB. Free memory was 134.8MB in the beginning and 101.0MB in the end (delta: 33.8MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2022-11-25 16:42:22,256 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 140.5MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:42:22,256 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1501.25ms. Allocated memory is still 180.4MB. Free memory was 134.1MB in the beginning and 137.6MB in the end (delta: -3.5MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2022-11-25 16:42:22,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.15ms. Allocated memory is still 180.4MB. Free memory was 137.6MB in the beginning and 134.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:42:22,257 INFO L158 Benchmark]: Boogie Preprocessor took 68.13ms. Allocated memory is still 180.4MB. Free memory was 134.5MB in the beginning and 133.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:42:22,258 INFO L158 Benchmark]: RCFGBuilder took 467.93ms. Allocated memory is still 180.4MB. Free memory was 133.4MB in the beginning and 120.6MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 16:42:22,258 INFO L158 Benchmark]: TraceAbstraction took 435.67ms. Allocated memory is still 180.4MB. Free memory was 119.7MB in the beginning and 103.1MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 16:42:22,263 INFO L158 Benchmark]: Witness Printer took 85.04ms. Allocated memory is still 180.4MB. Free memory was 103.1MB in the beginning and 101.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:42:22,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 140.5MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1501.25ms. Allocated memory is still 180.4MB. Free memory was 134.1MB in the beginning and 137.6MB in the end (delta: -3.5MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.15ms. Allocated memory is still 180.4MB. Free memory was 137.6MB in the beginning and 134.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.13ms. Allocated memory is still 180.4MB. Free memory was 134.5MB in the beginning and 133.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 467.93ms. Allocated memory is still 180.4MB. Free memory was 133.4MB in the beginning and 120.6MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 435.67ms. Allocated memory is still 180.4MB. Free memory was 119.7MB in the beginning and 103.1MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 85.04ms. Allocated memory is still 180.4MB. Free memory was 103.1MB in the beginning and 101.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 1551]: 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] [L1567] 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) [L1567] RET printLine("Calling bad()...") VAL [\old(argc)=1073741829, argc=1073741829, argv={1073741825:1073741831}, argv={1073741825:1073741831}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1568] CALL CWE191_Integer_Underflow__int_fscanf_predec_44_bad() [L1558] int data; [L1559] void (*funcPtr) (int) = badSink; [L1560] data = 0 [L1562] EXPR \read(data) [L1562] CALL funcPtr(data) [L1551] --data VAL [\old(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: 1551]: 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, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 9 NumberOfCodeBlocks, 9 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 16:42:22,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee0b7a3-532a-44fb-b64d-a9b97dd65b25/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)