./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash db598f24fd764e67b522f5d4f98f2564bb3f2d8c9e3be827ad1aeb8b6c3f693a --- 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 22:19:22,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:19:22,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:19:22,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:19:22,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:19:22,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:19:22,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:19:22,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:19:22,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:19:22,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:19:22,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:19:22,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:19:22,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:19:22,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:19:22,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:19:22,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:19:22,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:19:22,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:19:22,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:19:22,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:19:22,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:19:22,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:19:22,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:19:22,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:19:22,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:19:22,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:19:22,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:19:22,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:19:22,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:19:22,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:19:22,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:19:22,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:19:22,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:19:22,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:19:22,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:19:22,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:19:22,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:19:22,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:19:22,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:19:22,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:19:22,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:19:22,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 22:19:22,685 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:19:22,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:19:22,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:19:22,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:19:22,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:19:22,688 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:19:22,688 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:19:22,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:19:22,689 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:19:22,689 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:19:22,690 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:19:22,690 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:19:22,690 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:19:22,691 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:19:22,691 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:19:22,691 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:19:22,691 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:19:22,692 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:19:22,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:19:22,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:19:22,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:19:22,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:19:22,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:19:22,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:19:22,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:19:22,694 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:19:22,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:19:22,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:19:22,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:19:22,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:19:22,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:19:22,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:22,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:19:22,697 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:19:22,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:19:22,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:19:22,697 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:19:22,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:19:22,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:19:22,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:19:22,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db598f24fd764e67b522f5d4f98f2564bb3f2d8c9e3be827ad1aeb8b6c3f693a [2022-11-25 22:19:23,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:19:23,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:19:23,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:19:23,068 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:19:23,068 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:19:23,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2022-11-25 22:19:26,118 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:19:26,538 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:19:26,538 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2022-11-25 22:19:26,567 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/data/b69e1588a/3e8a98fd44ce463ba1170cfd0696de31/FLAG282078747 [2022-11-25 22:19:26,583 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/data/b69e1588a/3e8a98fd44ce463ba1170cfd0696de31 [2022-11-25 22:19:26,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:19:26,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:19:26,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:19:26,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:19:26,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:19:26,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:19:26" (1/1) ... [2022-11-25 22:19:26,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32246d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:26, skipping insertion in model container [2022-11-25 22:19:26,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:19:26" (1/1) ... [2022-11-25 22:19:26,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:19:26,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:19:27,131 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:19:27,596 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:19:27,602 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:19:27,604 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:19:27,607 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:19:27,608 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:19:27,636 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:19:27,639 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:19:27,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:19:27,658 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:19:27,679 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:19:27,728 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:19:27,730 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:19:27,732 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:19:27,735 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:19:27,735 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:19:27,740 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:19:27,741 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:19:27,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:19:27,925 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:19:27,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27 WrapperNode [2022-11-25 22:19:27,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:19:27,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:19:27,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:19:27,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:19:27,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:27,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:27,994 INFO L138 Inliner]: procedures = 504, calls = 66, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 60 [2022-11-25 22:19:27,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:19:27,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:19:27,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:19:27,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:19:28,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:28,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:28,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:28,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:28,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:28,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:28,019 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:28,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:28,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:19:28,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:19:28,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:19:28,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:19:28,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (1/1) ... [2022-11-25 22:19:28,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:28,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:19:28,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:19:28,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:19:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 22:19:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 22:19:28,126 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 22:19:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:19:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 22:19:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:19:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:19:28,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:19:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:19:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 22:19:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:19:28,348 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:19:28,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:19:28,473 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:19:28,517 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:19:28,517 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:19:28,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:28 BoogieIcfgContainer [2022-11-25 22:19:28,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:19:28,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:19:28,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:19:28,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:19:28,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:19:26" (1/3) ... [2022-11-25 22:19:28,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e095dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:19:28, skipping insertion in model container [2022-11-25 22:19:28,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:27" (2/3) ... [2022-11-25 22:19:28,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e095dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:19:28, skipping insertion in model container [2022-11-25 22:19:28,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:28" (3/3) ... [2022-11-25 22:19:28,537 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2022-11-25 22:19:28,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:19:28,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:19:28,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:19:28,631 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=FINITE_AUTOMATA, 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;@32e6a2f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:19:28,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:19:28,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 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 22:19:28,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:19:28,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:28,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:28,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 22:19:28,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash -178044757, now seen corresponding path program 1 times [2022-11-25 22:19:28,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:28,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48302977] [2022-11-25 22:19:28,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:28,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:19:28,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:19:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:19:28,879 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 22:19:28,881 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:19:28,883 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 22:19:28,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 22:19:28,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:19:28,891 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 22:19:28,899 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:19:28,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:19:28 BoogieIcfgContainer [2022-11-25 22:19:28,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:19:28,934 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:19:28,934 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:19:28,935 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:19:28,935 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:28" (3/4) ... [2022-11-25 22:19:28,940 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 22:19:28,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:19:28,941 INFO L158 Benchmark]: Toolchain (without parser) took 2353.73ms. Allocated memory is still 167.8MB. Free memory was 119.5MB in the beginning and 77.7MB in the end (delta: 41.9MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2022-11-25 22:19:28,942 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory was 70.4MB in the beginning and 70.3MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:19:28,942 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1335.45ms. Allocated memory is still 167.8MB. Free memory was 119.5MB in the beginning and 115.4MB in the end (delta: 4.1MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. [2022-11-25 22:19:28,943 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.72ms. Allocated memory is still 167.8MB. Free memory was 115.4MB in the beginning and 112.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:19:28,944 INFO L158 Benchmark]: Boogie Preprocessor took 27.22ms. Allocated memory is still 167.8MB. Free memory was 112.4MB in the beginning and 111.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:19:28,944 INFO L158 Benchmark]: RCFGBuilder took 495.83ms. Allocated memory is still 167.8MB. Free memory was 111.2MB in the beginning and 95.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 22:19:28,945 INFO L158 Benchmark]: TraceAbstraction took 412.36ms. Allocated memory is still 167.8MB. Free memory was 95.6MB in the beginning and 78.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 22:19:28,945 INFO L158 Benchmark]: Witness Printer took 6.02ms. Allocated memory is still 167.8MB. Free memory was 78.6MB in the beginning and 77.7MB in the end (delta: 923.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:19:28,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory was 70.4MB in the beginning and 70.3MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1335.45ms. Allocated memory is still 167.8MB. Free memory was 119.5MB in the beginning and 115.4MB in the end (delta: 4.1MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.72ms. Allocated memory is still 167.8MB. Free memory was 115.4MB in the beginning and 112.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.22ms. Allocated memory is still 167.8MB. Free memory was 112.4MB in the beginning and 111.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 495.83ms. Allocated memory is still 167.8MB. Free memory was 111.2MB in the beginning and 95.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 412.36ms. Allocated memory is still 167.8MB. Free memory was 95.6MB in the beginning and 78.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 6.02ms. Allocated memory is still 167.8MB. Free memory was 78.6MB in the beginning and 77.7MB in the end (delta: 923.8kB). 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 - UnprovableResult [Line: 1593]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=1073741825, argc=1073741825, argv={1073741828:1073741827}, argv={1073741828:1073741827}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_multiply_54_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_multiply_54b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_multiply_54c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_multiply_54d_badSink(data) [L1587] CALL CWE191_Integer_Underflow__int_fgets_multiply_54e_badSink(data) [L1591] COND TRUE data < 0 VAL [\old(data)=-1073741825, data=-1073741825, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1593] data * 2 VAL [\old(data)=-1073741825, data=-1073741825, 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: 1593]: 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, 17 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=17occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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 could not prove your program: unable to determine feasibility of some traces [2022-11-25 22:19:28,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash db598f24fd764e67b522f5d4f98f2564bb3f2d8c9e3be827ad1aeb8b6c3f693a --- 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 22:19:31,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:19:31,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:19:31,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:19:31,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:19:31,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:19:31,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:19:31,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:19:31,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:19:31,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:19:31,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:19:31,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:19:31,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:19:31,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:19:31,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:19:31,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:19:31,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:19:31,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:19:31,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:19:31,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:19:31,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:19:31,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:19:31,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:19:31,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:19:31,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:19:31,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:19:31,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:19:31,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:19:31,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:19:31,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:19:31,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:19:31,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:19:31,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:19:31,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:19:31,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:19:31,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:19:31,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:19:31,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:19:31,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:19:31,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:19:31,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:19:31,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-25 22:19:31,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:19:31,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:19:31,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:19:31,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:19:31,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:19:31,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:19:31,595 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:19:31,595 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:19:31,596 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:19:31,596 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:19:31,597 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:19:31,597 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:19:31,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:19:31,598 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:19:31,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:19:31,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:19:31,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:19:31,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:19:31,600 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:19:31,600 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 22:19:31,600 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:19:31,600 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 22:19:31,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:19:31,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:19:31,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:19:31,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:19:31,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 22:19:31,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:19:31,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:31,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:19:31,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:19:31,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:19:31,603 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 22:19:31,604 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 22:19:31,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:19:31,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:19:31,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 22:19:31,604 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db598f24fd764e67b522f5d4f98f2564bb3f2d8c9e3be827ad1aeb8b6c3f693a [2022-11-25 22:19:31,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:19:32,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:19:32,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:19:32,017 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:19:32,018 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:19:32,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2022-11-25 22:19:35,071 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:19:35,539 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:19:35,540 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2022-11-25 22:19:35,569 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/data/28fbef729/d3940e363326446297fb7bedbe28f13a/FLAG98b740336 [2022-11-25 22:19:35,598 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/data/28fbef729/d3940e363326446297fb7bedbe28f13a [2022-11-25 22:19:35,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:19:35,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:19:35,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:19:35,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:19:35,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:19:35,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:19:35" (1/1) ... [2022-11-25 22:19:35,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bdc364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:35, skipping insertion in model container [2022-11-25 22:19:35,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:19:35" (1/1) ... [2022-11-25 22:19:35,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:19:35,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:19:36,144 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:19:36,958 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:19:36,964 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:19:36,967 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:19:36,974 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:19:36,975 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:19:37,000 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:19:37,005 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:19:37,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:19:37,031 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:19:37,049 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 22:19:37,103 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 22:19:37,104 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:19:37,105 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 22:19:37,107 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:19:37,108 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 22:19:37,116 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 22:19:37,120 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 22:19:37,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:19:37,311 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:19:37,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37 WrapperNode [2022-11-25 22:19:37,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:19:37,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:19:37,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:19:37,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:19:37,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,387 INFO L138 Inliner]: procedures = 509, calls = 66, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 59 [2022-11-25 22:19:37,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:19:37,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:19:37,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:19:37,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:19:37,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,416 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:19:37,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:19:37,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:19:37,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:19:37,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (1/1) ... [2022-11-25 22:19:37,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:37,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:19:37,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:19:37,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:19:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 22:19:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 22:19:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 22:19:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:19:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 22:19:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:19:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:19:37,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:19:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:19:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 22:19:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 22:19:37,756 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:19:37,758 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:19:37,963 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:19:37,968 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:19:37,969 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 22:19:37,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:37 BoogieIcfgContainer [2022-11-25 22:19:37,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:19:37,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:19:37,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:19:37,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:19:37,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:19:35" (1/3) ... [2022-11-25 22:19:37,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6747f7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:19:37, skipping insertion in model container [2022-11-25 22:19:37,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:37" (2/3) ... [2022-11-25 22:19:37,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6747f7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:19:37, skipping insertion in model container [2022-11-25 22:19:37,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:37" (3/3) ... [2022-11-25 22:19:37,981 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2022-11-25 22:19:38,001 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:19:38,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:19:38,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:19:38,058 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=FINITE_AUTOMATA, 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;@1affeed5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:19:38,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:19:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 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 22:19:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 22:19:38,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:38,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:38,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 22:19:38,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:38,079 INFO L85 PathProgramCache]: Analyzing trace with hash -754782598, now seen corresponding path program 1 times [2022-11-25 22:19:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:19:38,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655503229] [2022-11-25 22:19:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:38,097 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 22:19:38,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:19:38,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/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 22:19:38,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/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 22:19:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:19:38,304 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:19:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:19:38,386 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 22:19:38,388 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:19:38,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 22:19:38,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 22:19:38,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/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 22:19:38,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/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 22:19:38,597 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 22:19:38,603 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:19:38,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:19:38 BoogieIcfgContainer [2022-11-25 22:19:38,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:19:38,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:19:38,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:19:38,645 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:19:38,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:37" (3/4) ... [2022-11-25 22:19:38,652 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 22:19:38,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:19:38,654 INFO L158 Benchmark]: Toolchain (without parser) took 3051.82ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 54.7MB in the beginning and 53.2MB in the end (delta: 1.5MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-11-25 22:19:38,655 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 60.8MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:19:38,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1709.36ms. Allocated memory is still 79.7MB. Free memory was 54.5MB in the beginning and 49.2MB in the end (delta: 5.3MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2022-11-25 22:19:38,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.80ms. Allocated memory is still 79.7MB. Free memory was 49.2MB in the beginning and 46.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:19:38,661 INFO L158 Benchmark]: Boogie Preprocessor took 32.82ms. Allocated memory is still 79.7MB. Free memory was 46.2MB in the beginning and 44.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:19:38,663 INFO L158 Benchmark]: RCFGBuilder took 548.99ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 44.2MB in the beginning and 71.9MB in the end (delta: -27.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 22:19:38,664 INFO L158 Benchmark]: TraceAbstraction took 669.07ms. Allocated memory is still 100.7MB. Free memory was 71.1MB in the beginning and 53.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 22:19:38,665 INFO L158 Benchmark]: Witness Printer took 7.72ms. Allocated memory is still 100.7MB. Free memory was 53.8MB in the beginning and 53.2MB in the end (delta: 562.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:19:38,672 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 60.8MB. Free memory is still 38.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1709.36ms. Allocated memory is still 79.7MB. Free memory was 54.5MB in the beginning and 49.2MB in the end (delta: 5.3MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.80ms. Allocated memory is still 79.7MB. Free memory was 49.2MB in the beginning and 46.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.82ms. Allocated memory is still 79.7MB. Free memory was 46.2MB in the beginning and 44.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 548.99ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 44.2MB in the beginning and 71.9MB in the end (delta: -27.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 669.07ms. Allocated memory is still 100.7MB. Free memory was 71.1MB in the beginning and 53.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 7.72ms. Allocated memory is still 100.7MB. Free memory was 53.8MB in the beginning and 53.2MB in the end (delta: 562.2kB). 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: 1593]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_multiply_54_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_multiply_54b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_multiply_54c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_multiply_54d_badSink(data) [L1587] CALL CWE191_Integer_Underflow__int_fgets_multiply_54e_badSink(data) [L1591] COND TRUE data < 0 VAL [\old(data)=-2147483616, data=-2147483616, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1593] data * 2 VAL [\old(data)=-2147483616, data=-2147483616, 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: 1593]: 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: 0.6s, 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=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 could not prove your program: unable to determine feasibility of some traces [2022-11-25 22:19:38,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0ff555-5250-41f2-89ac-5db8172db4c7/bin/utaipan-ByfvJB40ur/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