./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_04_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_04_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh --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 65e8a0a9ca254c7952538dbe77a1c5314ecc616f0d4fbd62f6ebdc2d7f1ee180 --- 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-2329fc7 [2022-12-14 11:44:47,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:44:47,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:44:47,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:44:47,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:44:47,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:44:47,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:44:47,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:44:47,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:44:47,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:44:47,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:44:47,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:44:47,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:44:47,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:44:47,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:44:47,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:44:47,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:44:47,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:44:47,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:44:47,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:44:47,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:44:47,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:44:47,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:44:47,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:44:47,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:44:47,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:44:47,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:44:47,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:44:47,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:44:47,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:44:47,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:44:47,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:44:47,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:44:47,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:44:47,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:44:47,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:44:47,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:44:47,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:44:47,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:44:47,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:44:47,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:44:47,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 11:44:47,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:44:47,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:44:47,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:44:47,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:44:47,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:44:47,623 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:44:47,624 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:44:47,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:44:47,624 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:44:47,624 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:44:47,629 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:44:47,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:44:47,630 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:44:47,630 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:44:47,630 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:44:47,630 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:44:47,630 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:44:47,631 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:44:47,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:44:47,632 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:44:47,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:44:47,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:44:47,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:44:47,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:44:47,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:44:47,633 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:44:47,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:44:47,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:44:47,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:44:47,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:44:47,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:44:47,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:44:47,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:44:47,634 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:44:47,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:44:47,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:44:47,635 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:44:47,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:44:47,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:44:47,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:44:47,636 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_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65e8a0a9ca254c7952538dbe77a1c5314ecc616f0d4fbd62f6ebdc2d7f1ee180 [2022-12-14 11:44:47,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:44:47,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:44:47,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:44:47,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:44:47,851 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:44:47,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_04_bad.i [2022-12-14 11:44:50,378 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:44:50,643 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:44:50,644 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_04_bad.i [2022-12-14 11:44:50,660 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/data/28ff9beb6/1a51b2a75a0246ebbe1e2788a6c643a6/FLAG1ebff04f0 [2022-12-14 11:44:50,958 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/data/28ff9beb6/1a51b2a75a0246ebbe1e2788a6c643a6 [2022-12-14 11:44:50,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:44:50,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:44:50,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:44:50,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:44:50,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:44:50,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:44:50" (1/1) ... [2022-12-14 11:44:50,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9faa40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:50, skipping insertion in model container [2022-12-14 11:44:50,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:44:50" (1/1) ... [2022-12-14 11:44:50,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:44:51,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:44:51,261 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:44:51,631 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:44:51,635 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:44:51,637 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:44:51,639 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:44:51,639 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:44:51,657 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:44:51,661 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:44:51,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:44:51,670 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:44:51,683 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:44:51,711 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:44:51,712 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:44:51,713 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:44:51,715 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:44:51,715 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:44:51,718 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:44:51,719 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:44:51,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:44:51,814 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:44:51,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51 WrapperNode [2022-12-14 11:44:51,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:44:51,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:44:51,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:44:51,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:44:51,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,863 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-12-14 11:44:51,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:44:51,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:44:51,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:44:51,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:44:51,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:44:51,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:44:51,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:44:51,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:44:51,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (1/1) ... [2022-12-14 11:44:51,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:44:51,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:44:51,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:44:51,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:44:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 11:44:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 11:44:51,950 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 11:44:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:44:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 11:44:51,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:44:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:44:51,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:44:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:44:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 11:44:51,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:44:52,065 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:44:52,067 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:44:52,188 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:44:52,219 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:44:52,219 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:44:52,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:44:52 BoogieIcfgContainer [2022-12-14 11:44:52,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:44:52,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:44:52,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:44:52,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:44:52,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:44:50" (1/3) ... [2022-12-14 11:44:52,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f83093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:44:52, skipping insertion in model container [2022-12-14 11:44:52,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:51" (2/3) ... [2022-12-14 11:44:52,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f83093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:44:52, skipping insertion in model container [2022-12-14 11:44:52,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:44:52" (3/3) ... [2022-12-14 11:44:52,231 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_04_bad.i [2022-12-14 11:44:52,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:44:52,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 11:44:52,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:44:52,295 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;@c108d15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:44:52,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 11:44:52,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 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) [2022-12-14 11:44:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 11:44:52,306 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:44:52,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:44:52,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:44:52,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:44:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash 805598275, now seen corresponding path program 1 times [2022-12-14 11:44:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:44:52,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027000476] [2022-12-14 11:44:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:44:52,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:44:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:44:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:44:52,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:44:52,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027000476] [2022-12-14 11:44:52,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027000476] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:44:52,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:44:52,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:44:52,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541402046] [2022-12-14 11:44:52,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:44:52,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:44:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:44:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:44:52,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:44:52,584 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:44:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:44:52,619 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-12-14 11:44:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:44:52,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-12-14 11:44:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:44:52,626 INFO L225 Difference]: With dead ends: 31 [2022-12-14 11:44:52,626 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 11:44:52,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:44:52,632 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:44:52,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:44:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 11:44:52,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 11:44:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 12 states have internal predecessors, (12), 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) [2022-12-14 11:44:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-12-14 11:44:52,658 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2022-12-14 11:44:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:44:52,659 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-12-14 11:44:52,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:44:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-12-14 11:44:52,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 11:44:52,661 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:44:52,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:44:52,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:44:52,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:44:52,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:44:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash 789107816, now seen corresponding path program 1 times [2022-12-14 11:44:52,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:44:52,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984425227] [2022-12-14 11:44:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:44:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:44:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:44:52,685 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:44:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:44:52,714 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:44:52,714 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:44:52,715 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 11:44:52,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 11:44:52,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:44:52,720 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 11:44:52,723 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:44:52,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:44:52 BoogieIcfgContainer [2022-12-14 11:44:52,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:44:52,740 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:44:52,740 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:44:52,740 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:44:52,741 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:44:52" (3/4) ... [2022-12-14 11:44:52,743 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:44:52,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:44:52,744 INFO L158 Benchmark]: Toolchain (without parser) took 1779.95ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 113.3MB in the beginning and 94.3MB in the end (delta: 19.0MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2022-12-14 11:44:52,744 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 148.9MB. Free memory was 118.7MB in the beginning and 118.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:44:52,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 849.34ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 113.3MB in the beginning and 146.7MB in the end (delta: -33.4MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. [2022-12-14 11:44:52,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.80ms. Allocated memory is still 180.4MB. Free memory was 146.7MB in the beginning and 143.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 11:44:52,745 INFO L158 Benchmark]: Boogie Preprocessor took 23.54ms. Allocated memory is still 180.4MB. Free memory was 143.6MB in the beginning and 142.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:44:52,745 INFO L158 Benchmark]: RCFGBuilder took 333.85ms. Allocated memory is still 180.4MB. Free memory was 142.6MB in the beginning and 127.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 11:44:52,746 INFO L158 Benchmark]: TraceAbstraction took 515.39ms. Allocated memory is still 180.4MB. Free memory was 126.8MB in the beginning and 94.3MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 11:44:52,746 INFO L158 Benchmark]: Witness Printer took 3.11ms. Allocated memory is still 180.4MB. Free memory was 94.3MB in the beginning and 94.3MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:44:52,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 148.9MB. Free memory was 118.7MB in the beginning and 118.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 849.34ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 113.3MB in the beginning and 146.7MB in the end (delta: -33.4MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.80ms. Allocated memory is still 180.4MB. Free memory was 146.7MB in the beginning and 143.6MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.54ms. Allocated memory is still 180.4MB. Free memory was 143.6MB in the beginning and 142.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 333.85ms. Allocated memory is still 180.4MB. Free memory was 142.6MB in the beginning and 127.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 515.39ms. Allocated memory is still 180.4MB. Free memory was 126.8MB in the beginning and 94.3MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 3.11ms. Allocated memory is still 180.4MB. Free memory was 94.3MB in the beginning and 94.3MB in the end (delta: 2.7kB). 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: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 0; [L1580] 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}, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_multiply_04_bad() [L1552] int data; [L1553] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1568] COND TRUE \read(STATIC_CONST_TRUE) VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1570] COND TRUE data < 0 VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1572] data * 2 VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] - UnprovableResult [Line: 1572]: 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, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 16 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-12-14 11:44:52,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_04_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh --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 65e8a0a9ca254c7952538dbe77a1c5314ecc616f0d4fbd62f6ebdc2d7f1ee180 --- 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-2329fc7 [2022-12-14 11:44:54,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:44:54,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:44:54,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:44:54,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:44:54,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:44:54,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:44:54,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:44:54,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:44:54,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:44:54,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:44:54,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:44:54,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:44:54,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:44:54,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:44:54,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:44:54,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:44:54,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:44:54,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:44:54,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:44:54,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:44:54,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:44:54,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:44:54,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:44:54,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:44:54,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:44:54,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:44:54,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:44:54,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:44:54,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:44:54,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:44:54,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:44:54,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:44:54,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:44:54,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:44:54,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:44:54,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:44:54,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:44:54,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:44:54,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:44:54,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:44:54,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 11:44:54,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:44:54,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:44:54,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:44:54,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:44:54,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:44:54,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:44:54,403 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:44:54,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:44:54,404 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:44:54,404 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:44:54,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:44:54,404 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:44:54,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:44:54,405 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 11:44:54,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:44:54,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:44:54,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:44:54,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:44:54,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:44:54,406 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 11:44:54,406 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 11:44:54,406 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 11:44:54,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:44:54,406 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:44:54,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:44:54,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:44:54,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 11:44:54,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:44:54,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:44:54,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:44:54,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:44:54,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:44:54,408 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 11:44:54,408 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 11:44:54,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:44:54,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:44:54,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 11:44:54,408 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_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65e8a0a9ca254c7952538dbe77a1c5314ecc616f0d4fbd62f6ebdc2d7f1ee180 [2022-12-14 11:44:54,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:44:54,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:44:54,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:44:54,666 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:44:54,666 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:44:54,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_04_bad.i [2022-12-14 11:44:57,342 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:44:57,620 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:44:57,621 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_04_bad.i [2022-12-14 11:44:57,647 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/data/4e0287dad/6e6bcc6f6c3a4620a2737a151b458e23/FLAG4003811e6 [2022-12-14 11:44:57,661 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/data/4e0287dad/6e6bcc6f6c3a4620a2737a151b458e23 [2022-12-14 11:44:57,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:44:57,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:44:57,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:44:57,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:44:57,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:44:57,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:44:57" (1/1) ... [2022-12-14 11:44:57,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435a4e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:57, skipping insertion in model container [2022-12-14 11:44:57,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:44:57" (1/1) ... [2022-12-14 11:44:57,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:44:57,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:44:57,957 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:44:58,242 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:44:58,246 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:44:58,247 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:44:58,249 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:44:58,249 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:44:58,262 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:44:58,266 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:44:58,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:44:58,277 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:44:58,291 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 11:44:58,344 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:44:58,345 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:44:58,347 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 11:44:58,349 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:44:58,350 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 11:44:58,355 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 11:44:58,357 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 11:44:58,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:44:58,437 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:44:58,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58 WrapperNode [2022-12-14 11:44:58,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:44:58,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:44:58,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:44:58,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:44:58,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,490 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-12-14 11:44:58,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:44:58,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:44:58,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:44:58,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:44:58,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:44:58,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:44:58,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:44:58,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:44:58,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (1/1) ... [2022-12-14 11:44:58,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:44:58,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:44:58,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:44:58,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:44:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 11:44:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 11:44:58,572 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 11:44:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:44:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 11:44:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:44:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:44:58,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:44:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:44:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 11:44:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 11:44:58,688 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:44:58,690 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:44:58,802 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:44:58,808 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:44:58,808 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:44:58,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:44:58 BoogieIcfgContainer [2022-12-14 11:44:58,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:44:58,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:44:58,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:44:58,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:44:58,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:44:57" (1/3) ... [2022-12-14 11:44:58,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56770672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:44:58, skipping insertion in model container [2022-12-14 11:44:58,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:44:58" (2/3) ... [2022-12-14 11:44:58,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56770672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:44:58, skipping insertion in model container [2022-12-14 11:44:58,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:44:58" (3/3) ... [2022-12-14 11:44:58,818 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_04_bad.i [2022-12-14 11:44:58,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:44:58,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 11:44:58,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:44:58,883 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;@1cd1929a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:44:58,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 11:44:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 21 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) [2022-12-14 11:44:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 11:44:58,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:44:58,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:44:58,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:44:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:44:58,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1426013167, now seen corresponding path program 1 times [2022-12-14 11:44:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:44:58,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089161000] [2022-12-14 11:44:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:44:58,908 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 [2022-12-14 11:44:58,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:44:58,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:44:58,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:44:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:44:59,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 11:44:59,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:44:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:44:59,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:44:59,070 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:44:59,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089161000] [2022-12-14 11:44:59,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089161000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:44:59,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:44:59,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:44:59,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565818609] [2022-12-14 11:44:59,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:44:59,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:44:59,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:44:59,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:44:59,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:44:59,099 INFO L87 Difference]: Start difference. First operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 21 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) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:44:59,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:44:59,122 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2022-12-14 11:44:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:44:59,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-12-14 11:44:59,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:44:59,128 INFO L225 Difference]: With dead ends: 42 [2022-12-14 11:44:59,129 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 11:44:59,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:44:59,132 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:44:59,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:44:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 11:44:59,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 11:44:59,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-12-14 11:44:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-12-14 11:44:59,156 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-12-14 11:44:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:44:59,157 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-12-14 11:44:59,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 11:44:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-12-14 11:44:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 11:44:59,158 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:44:59,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:44:59,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:44:59,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:44:59,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 11:44:59,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:44:59,363 INFO L85 PathProgramCache]: Analyzing trace with hash -600807242, now seen corresponding path program 1 times [2022-12-14 11:44:59,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:44:59,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682056691] [2022-12-14 11:44:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:44:59,365 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 [2022-12-14 11:44:59,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:44:59,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/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) [2022-12-14 11:44:59,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/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 (3)] Waiting until timeout for monitored process [2022-12-14 11:44:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:44:59,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:44:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:44:59,684 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 11:44:59,684 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:44:59,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 11:44:59,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 11:44:59,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/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 (3)] Ended with exit code 0 [2022-12-14 11:44:59,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/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 [2022-12-14 11:44:59,898 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 11:44:59,908 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:44:59,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:44:59 BoogieIcfgContainer [2022-12-14 11:44:59,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:44:59,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:44:59,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:44:59,948 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:44:59,948 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:44:58" (3/4) ... [2022-12-14 11:44:59,951 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:44:59,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:44:59,951 INFO L158 Benchmark]: Toolchain (without parser) took 2286.80ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 23.8MB in the beginning and 57.4MB in the end (delta: -33.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:44:59,952 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 58.7MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:44:59,952 INFO L158 Benchmark]: CACSL2BoogieTranslator took 772.26ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 23.6MB in the beginning and 30.0MB in the end (delta: -6.4MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-12-14 11:44:59,952 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.86ms. Allocated memory is still 75.5MB. Free memory was 30.0MB in the beginning and 48.0MB in the end (delta: -18.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:44:59,953 INFO L158 Benchmark]: Boogie Preprocessor took 27.71ms. Allocated memory is still 75.5MB. Free memory was 48.0MB in the beginning and 45.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:44:59,953 INFO L158 Benchmark]: RCFGBuilder took 290.55ms. Allocated memory is still 75.5MB. Free memory was 45.9MB in the beginning and 32.0MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 11:44:59,954 INFO L158 Benchmark]: TraceAbstraction took 1135.19ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 31.2MB in the beginning and 57.4MB in the end (delta: -26.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:44:59,954 INFO L158 Benchmark]: Witness Printer took 3.16ms. Allocated memory is still 92.3MB. Free memory is still 57.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:44:59,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 58.7MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 772.26ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 23.6MB in the beginning and 30.0MB in the end (delta: -6.4MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.86ms. Allocated memory is still 75.5MB. Free memory was 30.0MB in the beginning and 48.0MB in the end (delta: -18.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.71ms. Allocated memory is still 75.5MB. Free memory was 48.0MB in the beginning and 45.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 290.55ms. Allocated memory is still 75.5MB. Free memory was 45.9MB in the beginning and 32.0MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1135.19ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 31.2MB in the beginning and 57.4MB in the end (delta: -26.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.16ms. Allocated memory is still 92.3MB. Free memory is still 57.4MB. 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: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1580] 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}, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1414] COND TRUE line != ((void *)0) [L1580] 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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_multiply_04_bad() [L1552] int data; [L1553] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1568] COND TRUE \read(STATIC_CONST_TRUE) VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1570] COND TRUE data < 0 VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] [L1572] data * 2 VAL [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, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1] - UnprovableResult [Line: 1572]: 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, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 27 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-12-14 11:44:59,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a980652-588a-455c-a5a8-b6cf055a19f8/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample