./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_68_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/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_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/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_2172e34a-459e-4774-b8f5-2f4d38850f33/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 bef63c42b87a0bfebee91ff77870715a71ca1795bcfbb7b0cd1ce6ff664812e4 --- 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 08:51:09,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:51:09,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:51:09,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:51:09,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:51:09,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:51:09,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:51:09,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:51:09,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:51:09,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:51:09,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:51:09,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:51:09,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:51:09,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:51:09,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:51:09,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:51:09,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:51:09,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:51:09,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:51:09,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:51:09,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:51:09,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:51:09,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:51:09,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:51:09,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:51:09,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:51:09,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:51:09,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:51:09,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:51:09,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:51:09,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:51:09,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:51:09,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:51:09,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:51:09,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:51:09,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:51:09,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:51:09,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:51:09,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:51:09,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:51:09,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:51:09,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 08:51:09,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:51:09,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:51:09,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:51:09,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:51:09,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:51:09,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:51:09,276 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:51:09,276 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:51:09,276 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:51:09,276 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:51:09,276 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:51:09,277 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:51:09,277 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:51:09,277 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:51:09,277 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:51:09,277 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:51:09,277 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:51:09,278 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:51:09,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:51:09,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:51:09,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:51:09,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:51:09,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:51:09,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:51:09,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:51:09,280 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 08:51:09,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:51:09,280 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:51:09,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:51:09,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:51:09,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:51:09,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:51:09,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:51:09,281 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:51:09,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:51:09,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:51:09,282 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:51:09,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:51:09,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:51:09,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:51:09,282 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_2172e34a-459e-4774-b8f5-2f4d38850f33/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bef63c42b87a0bfebee91ff77870715a71ca1795bcfbb7b0cd1ce6ff664812e4 [2022-12-14 08:51:09,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:51:09,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:51:09,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:51:09,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:51:09,498 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:51:09,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_68_bad.i [2022-12-14 08:51:12,040 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:51:12,268 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:51:12,268 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_68_bad.i [2022-12-14 08:51:12,281 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/data/c6ee467a3/e40c7db7a2fa43dbb34c4c6d4d4da04e/FLAGae1ac17b8 [2022-12-14 08:51:12,608 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/data/c6ee467a3/e40c7db7a2fa43dbb34c4c6d4d4da04e [2022-12-14 08:51:12,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:51:12,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:51:12,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:51:12,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:51:12,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:51:12,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:51:12" (1/1) ... [2022-12-14 08:51:12,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4004c44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:12, skipping insertion in model container [2022-12-14 08:51:12,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:51:12" (1/1) ... [2022-12-14 08:51:12,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:51:12,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:51:12,939 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:51:13,289 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:51:13,293 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:13,294 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:13,296 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:13,296 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:13,318 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:51:13,321 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:51:13,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:51:13,332 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:51:13,345 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:51:13,378 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:51:13,379 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:13,380 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:13,381 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:13,382 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:13,385 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:51:13,386 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:51:13,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:51:13,490 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:51:13,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13 WrapperNode [2022-12-14 08:51:13,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:51:13,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:51:13,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:51:13,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:51:13,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,526 INFO L138 Inliner]: procedures = 501, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-12-14 08:51:13,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:51:13,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:51:13,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:51:13,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:51:13,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:51:13,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:51:13,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:51:13,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:51:13,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (1/1) ... [2022-12-14 08:51:13,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:51:13,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:51:13,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:51:13,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:51:13,609 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 08:51:13,609 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 08:51:13,610 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 08:51:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:51:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 08:51:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:51:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:51:13,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:51:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:51:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 08:51:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:51:13,712 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:51:13,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:51:13,808 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:51:13,832 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:51:13,832 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 08:51:13,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:13 BoogieIcfgContainer [2022-12-14 08:51:13,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:51:13,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:51:13,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:51:13,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:51:13,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:51:12" (1/3) ... [2022-12-14 08:51:13,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f363b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:51:13, skipping insertion in model container [2022-12-14 08:51:13,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:13" (2/3) ... [2022-12-14 08:51:13,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f363b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:51:13, skipping insertion in model container [2022-12-14 08:51:13,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:13" (3/3) ... [2022-12-14 08:51:13,841 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_68_bad.i [2022-12-14 08:51:13,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:51:13,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 08:51:13,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:51:13,891 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;@317819b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:51:13,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 08:51:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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 08:51:13,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 08:51:13,900 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:51:13,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:51:13,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:51:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:51:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash 108804142, now seen corresponding path program 1 times [2022-12-14 08:51:13,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:51:13,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957874250] [2022-12-14 08:51:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:51:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:51:14,005 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:51:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:51:14,036 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 08:51:14,037 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:51:14,038 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 08:51:14,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 08:51:14,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:51:14,043 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 08:51:14,047 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:51:14,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:51:14 BoogieIcfgContainer [2022-12-14 08:51:14,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:51:14,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:51:14,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:51:14,062 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:51:14,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:13" (3/4) ... [2022-12-14 08:51:14,065 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:51:14,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:51:14,066 INFO L158 Benchmark]: Toolchain (without parser) took 1453.80ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 84.5MB in the beginning and 83.0MB in the end (delta: 1.6MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2022-12-14 08:51:14,066 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 123.7MB. Free memory was 89.8MB in the beginning and 89.8MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:51:14,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 877.23ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 84.1MB in the beginning and 120.7MB in the end (delta: -36.6MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. [2022-12-14 08:51:14,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.66ms. Allocated memory is still 180.4MB. Free memory was 120.7MB in the beginning and 117.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:51:14,067 INFO L158 Benchmark]: Boogie Preprocessor took 22.80ms. Allocated memory is still 180.4MB. Free memory was 117.6MB in the beginning and 115.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:51:14,068 INFO L158 Benchmark]: RCFGBuilder took 283.82ms. Allocated memory is still 180.4MB. Free memory was 115.5MB in the beginning and 100.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 08:51:14,068 INFO L158 Benchmark]: TraceAbstraction took 226.01ms. Allocated memory is still 180.4MB. Free memory was 100.8MB in the beginning and 84.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 08:51:14,068 INFO L158 Benchmark]: Witness Printer took 2.96ms. Allocated memory is still 180.4MB. Free memory was 84.0MB in the beginning and 83.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:51:14,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 123.7MB. Free memory was 89.8MB in the beginning and 89.8MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 877.23ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 84.1MB in the beginning and 120.7MB in the end (delta: -36.6MB). Peak memory consumption was 51.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.66ms. Allocated memory is still 180.4MB. Free memory was 120.7MB in the beginning and 117.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.80ms. Allocated memory is still 180.4MB. Free memory was 117.6MB in the beginning and 115.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 283.82ms. Allocated memory is still 180.4MB. Free memory was 115.5MB in the beginning and 100.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 226.01ms. Allocated memory is still 180.4MB. Free memory was 100.8MB in the beginning and 84.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.96ms. Allocated memory is still 180.4MB. Free memory was 84.0MB in the beginning and 83.0MB in the end (delta: 1.0MB). 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: 1585]: 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); [L1549] int CWE191_Integer_Underflow__int_fgets_sub_68_goodG2BData; [L1550] int CWE191_Integer_Underflow__int_fgets_sub_68_goodB2GData; [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_sub_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_sub_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1573] RET printLine("Calling bad()...") VAL [\old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, argv={1073741828:1073741827}, CWE191_Integer_Underflow__int_fgets_sub_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_sub_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] CALL CWE191_Integer_Underflow__int_fgets_sub_68_bad() [L1554] int data; [L1555] data = 0 [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)] = ""; [L1567] CWE191_Integer_Underflow__int_fgets_sub_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_sub_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_sub_68_badData; VAL [CWE191_Integer_Underflow__int_fgets_sub_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_sub_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_sub_68_goodG2BData=0, 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] [L1585] data - 1 VAL [CWE191_Integer_Underflow__int_fgets_sub_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_sub_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_sub_68_goodG2BData=0, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1585]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 08:51:14,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/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_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/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_2172e34a-459e-4774-b8f5-2f4d38850f33/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 bef63c42b87a0bfebee91ff77870715a71ca1795bcfbb7b0cd1ce6ff664812e4 --- 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 08:51:15,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:51:15,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:51:15,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:51:15,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:51:15,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:51:15,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:51:15,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:51:15,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:51:15,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:51:15,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:51:15,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:51:15,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:51:15,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:51:15,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:51:15,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:51:15,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:51:15,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:51:15,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:51:15,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:51:15,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:51:15,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:51:15,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:51:15,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:51:15,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:51:15,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:51:15,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:51:15,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:51:15,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:51:15,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:51:15,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:51:15,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:51:15,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:51:15,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:51:15,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:51:15,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:51:15,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:51:15,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:51:15,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:51:15,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:51:15,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:51:15,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 08:51:15,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:51:15,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:51:15,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:51:15,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:51:15,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:51:15,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:51:15,780 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:51:15,780 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:51:15,781 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:51:15,781 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:51:15,781 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:51:15,781 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:51:15,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:51:15,782 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:51:15,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:51:15,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:51:15,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:51:15,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:51:15,783 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:51:15,783 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:51:15,783 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 08:51:15,783 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:51:15,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:51:15,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:51:15,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:51:15,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:51:15,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:51:15,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:51:15,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:51:15,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:51:15,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:51:15,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:51:15,785 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:51:15,785 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:51:15,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:51:15,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:51:15,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:51:15,786 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_2172e34a-459e-4774-b8f5-2f4d38850f33/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bef63c42b87a0bfebee91ff77870715a71ca1795bcfbb7b0cd1ce6ff664812e4 [2022-12-14 08:51:16,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:51:16,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:51:16,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:51:16,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:51:16,057 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:51:16,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_68_bad.i [2022-12-14 08:51:18,691 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:51:18,904 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:51:18,905 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_68_bad.i [2022-12-14 08:51:18,918 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/data/2c3b9935a/1580211fd9a84b3796d6550286d3978e/FLAGfa69b6dba [2022-12-14 08:51:18,929 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/data/2c3b9935a/1580211fd9a84b3796d6550286d3978e [2022-12-14 08:51:18,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:51:18,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:51:18,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:51:18,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:51:18,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:51:18,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:51:18" (1/1) ... [2022-12-14 08:51:18,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c41eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:18, skipping insertion in model container [2022-12-14 08:51:18,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:51:18" (1/1) ... [2022-12-14 08:51:18,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:51:18,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:51:19,287 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:51:19,596 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:51:19,600 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:19,601 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:19,602 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:19,603 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:19,618 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:51:19,620 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:51:19,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:51:19,634 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:51:19,648 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:51:19,681 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:51:19,682 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:19,683 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:19,684 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:19,685 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:19,688 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:51:19,689 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:51:19,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:51:19,765 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:51:19,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19 WrapperNode [2022-12-14 08:51:19,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:51:19,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:51:19,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:51:19,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:51:19,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,803 INFO L138 Inliner]: procedures = 506, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 54 [2022-12-14 08:51:19,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:51:19,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:51:19,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:51:19,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:51:19,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,820 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:51:19,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:51:19,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:51:19,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:51:19,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (1/1) ... [2022-12-14 08:51:19,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:51:19,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:51:19,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:51:19,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:51:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 08:51:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 08:51:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 08:51:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:51:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 08:51:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:51:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:51:19,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:51:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:51:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 08:51:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 08:51:20,008 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:51:20,010 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:51:20,132 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:51:20,138 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:51:20,138 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 08:51:20,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:20 BoogieIcfgContainer [2022-12-14 08:51:20,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:51:20,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:51:20,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:51:20,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:51:20,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:51:18" (1/3) ... [2022-12-14 08:51:20,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c298b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:51:20, skipping insertion in model container [2022-12-14 08:51:20,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:19" (2/3) ... [2022-12-14 08:51:20,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c298b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:51:20, skipping insertion in model container [2022-12-14 08:51:20,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:20" (3/3) ... [2022-12-14 08:51:20,149 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_68_bad.i [2022-12-14 08:51:20,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:51:20,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 08:51:20,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:51:20,210 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;@70b60c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:51:20,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 08:51:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 08:51:20,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 08:51:20,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:51:20,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:51:20,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:51:20,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:51:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2022-12-14 08:51:20,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:51:20,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638402399] [2022-12-14 08:51:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:20,233 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 08:51:20,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:51:20,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/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 08:51:20,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/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 08:51:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:51:20,376 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:51:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:51:20,439 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 08:51:20,441 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:51:20,442 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 08:51:20,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 08:51:20,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/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 08:51:20,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/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 08:51:20,652 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 08:51:20,659 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:51:20,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:51:20 BoogieIcfgContainer [2022-12-14 08:51:20,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:51:20,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:51:20,734 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:51:20,735 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:51:20,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:20" (3/4) ... [2022-12-14 08:51:20,747 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:51:20,748 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:51:20,752 INFO L158 Benchmark]: Toolchain (without parser) took 1817.91ms. Allocated memory is still 77.6MB. Free memory was 54.5MB in the beginning and 49.3MB in the end (delta: 5.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-12-14 08:51:20,754 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 35.2MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:51:20,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 832.68ms. Allocated memory is still 77.6MB. Free memory was 54.3MB in the beginning and 44.4MB in the end (delta: 9.9MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-12-14 08:51:20,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.20ms. Allocated memory is still 77.6MB. Free memory was 44.4MB in the beginning and 41.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 08:51:20,760 INFO L158 Benchmark]: Boogie Preprocessor took 20.18ms. Allocated memory is still 77.6MB. Free memory was 41.3MB in the beginning and 39.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:51:20,762 INFO L158 Benchmark]: RCFGBuilder took 316.59ms. Allocated memory is still 77.6MB. Free memory was 39.2MB in the beginning and 45.3MB in the end (delta: -6.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-12-14 08:51:20,765 INFO L158 Benchmark]: TraceAbstraction took 588.86ms. Allocated memory is still 77.6MB. Free memory was 44.4MB in the beginning and 49.7MB in the end (delta: -5.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 08:51:20,767 INFO L158 Benchmark]: Witness Printer took 14.57ms. Allocated memory is still 77.6MB. Free memory was 49.3MB in the beginning and 49.3MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:51:20,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 35.2MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 832.68ms. Allocated memory is still 77.6MB. Free memory was 54.3MB in the beginning and 44.4MB in the end (delta: 9.9MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.20ms. Allocated memory is still 77.6MB. Free memory was 44.4MB in the beginning and 41.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.18ms. Allocated memory is still 77.6MB. Free memory was 41.3MB in the beginning and 39.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.59ms. Allocated memory is still 77.6MB. Free memory was 39.2MB in the beginning and 45.3MB in the end (delta: -6.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * TraceAbstraction took 588.86ms. Allocated memory is still 77.6MB. Free memory was 44.4MB in the beginning and 49.7MB in the end (delta: -5.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 14.57ms. Allocated memory is still 77.6MB. Free memory was 49.3MB in the beginning and 49.3MB in the end (delta: 2.6kB). 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: 1585]: 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] int CWE191_Integer_Underflow__int_fgets_sub_68_badData; VAL [CWE191_Integer_Underflow__int_fgets_sub_68_badData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_sub_68_badData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1573] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, CWE191_Integer_Underflow__int_fgets_sub_68_badData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] CALL CWE191_Integer_Underflow__int_fgets_sub_68_bad() [L1554] int data; [L1555] data = 0 [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)] = ""; [L1567] CWE191_Integer_Underflow__int_fgets_sub_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_sub_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_sub_68_badData; VAL [CWE191_Integer_Underflow__int_fgets_sub_68_badData=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1585] data - 1 VAL [CWE191_Integer_Underflow__int_fgets_sub_68_badData=-2147483648, data=-2147483648, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 08:51:20,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172e34a-459e-4774-b8f5-2f4d38850f33/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