./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:11:13,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:11:13,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:11:13,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:11:13,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:11:13,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:11:13,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:11:13,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:11:13,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:11:13,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:11:13,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:11:13,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:11:13,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:11:13,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:11:13,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:11:13,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:11:13,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:11:13,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:11:13,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:11:13,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:11:13,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:11:13,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:11:13,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:11:13,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:11:13,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:11:13,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:11:13,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:11:13,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:11:13,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:11:13,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:11:13,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:11:13,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:11:13,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:11:13,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:11:13,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:11:13,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:11:13,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:11:13,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:11:13,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:11:13,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:11:13,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:11:13,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:11:13,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:11:13,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:11:13,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:11:13,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:11:13,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:11:13,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:11:13,306 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:11:13,306 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:11:13,307 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:11:13,307 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:11:13,307 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:11:13,307 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:11:13,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:11:13,307 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:11:13,308 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:11:13,308 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:11:13,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:11:13,308 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:11:13,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:11:13,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:11:13,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:11:13,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:11:13,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:11:13,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:11:13,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:11:13,310 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:11:13,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:11:13,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:11:13,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:11:13,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:11:13,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:11:13,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:11:13,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:11:13,312 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:11:13,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:11:13,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:11:13,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:11:13,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:11:13,312 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c [2021-11-25 18:11:13,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:11:13,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:11:13,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:11:13,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:11:13,598 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:11:13,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-11-25 18:11:13,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/data/82599f729/b13e03f835e34b1ebcb1a96bb51b5a26/FLAG696facd40 [2021-11-25 18:11:14,542 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:11:14,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-11-25 18:11:14,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/data/82599f729/b13e03f835e34b1ebcb1a96bb51b5a26/FLAG696facd40 [2021-11-25 18:11:14,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/data/82599f729/b13e03f835e34b1ebcb1a96bb51b5a26 [2021-11-25 18:11:14,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:11:14,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:11:14,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:11:14,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:11:14,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:11:14,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:14" (1/1) ... [2021-11-25 18:11:14,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb11ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:14, skipping insertion in model container [2021-11-25 18:11:14,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:14" (1/1) ... [2021-11-25 18:11:15,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:11:15,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:11:15,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4492,4505] [2021-11-25 18:11:15,460 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4552,4565] [2021-11-25 18:11:16,607 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:16,608 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:16,608 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:16,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:16,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:16,624 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:16,624 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:16,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:16,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,024 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:11:17,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:11:17,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:11:17,028 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:11:17,029 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:11:17,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:11:17,031 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:11:17,032 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:11:17,032 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:11:17,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:11:17,190 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:11:17,286 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:11:17,409 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:11:17,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4492,4505] [2021-11-25 18:11:17,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4552,4565] [2021-11-25 18:11:17,518 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,520 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,528 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,528 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,530 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,572 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:11:17,573 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:11:17,573 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:11:17,574 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:11:17,575 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:11:17,576 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:11:17,576 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:11:17,577 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:11:17,577 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:11:17,578 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:11:17,599 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:11:17,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:11:17,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:11:17,987 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:11:17,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17 WrapperNode [2021-11-25 18:11:17,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:11:17,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:11:17,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:11:17,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:11:18,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (1/1) ... [2021-11-25 18:11:18,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (1/1) ... [2021-11-25 18:11:18,275 INFO L137 Inliner]: procedures = 691, calls = 2650, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 873 [2021-11-25 18:11:18,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:11:18,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:11:18,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:11:18,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:11:18,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (1/1) ... [2021-11-25 18:11:18,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (1/1) ... [2021-11-25 18:11:18,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (1/1) ... [2021-11-25 18:11:18,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (1/1) ... [2021-11-25 18:11:18,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (1/1) ... [2021-11-25 18:11:18,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (1/1) ... [2021-11-25 18:11:18,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (1/1) ... [2021-11-25 18:11:18,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:11:18,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:11:18,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:11:18,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:11:18,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (1/1) ... [2021-11-25 18:11:18,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:11:18,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:18,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:11:18,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:11:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-25 18:11:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-25 18:11:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 18:11:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:11:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 18:11:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 18:11:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:11:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-11-25 18:11:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-11-25 18:11:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:11:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:11:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:11:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:11:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-25 18:11:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-25 18:11:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:11:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:11:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:11:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 18:11:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 18:11:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-25 18:11:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-25 18:11:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:11:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:11:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:11:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:11:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-25 18:11:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-25 18:11:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:11:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 18:11:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 18:11:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:11:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-25 18:11:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-25 18:11:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:11:18,824 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:11:18,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:11:20,241 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:11:20,402 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:11:20,402 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:11:20,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:20 BoogieIcfgContainer [2021-11-25 18:11:20,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:11:20,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:11:20,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:11:20,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:11:20,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:11:14" (1/3) ... [2021-11-25 18:11:20,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b96ed87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:20, skipping insertion in model container [2021-11-25 18:11:20,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:17" (2/3) ... [2021-11-25 18:11:20,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b96ed87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:20, skipping insertion in model container [2021-11-25 18:11:20,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:20" (3/3) ... [2021-11-25 18:11:20,415 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_harness.i [2021-11-25 18:11:20,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:11:20,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:11:20,467 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:11:20,473 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:11:20,476 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:11:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 55 states have (on average 1.2) internal successors, (66), 56 states have internal predecessors, (66), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-25 18:11:20,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-25 18:11:20,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:20,512 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:20,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:20,517 INFO L85 PathProgramCache]: Analyzing trace with hash 7795166, now seen corresponding path program 1 times [2021-11-25 18:11:20,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:20,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128599260] [2021-11-25 18:11:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:20,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-25 18:11:23,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:23,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128599260] [2021-11-25 18:11:23,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128599260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:11:23,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480130632] [2021-11-25 18:11:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:23,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:11:23,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:23,848 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:11:23,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dee468f-f720-49b4-94e7-80332e26bbd7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:11:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:24,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2645 conjuncts, 140 conjunts are in the unsatisfiable core [2021-11-25 18:11:24,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:11:24,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 18:11:24,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:11:24,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:11:27,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-11-25 18:11:27,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2021-11-25 18:11:27,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-11-25 18:11:27,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2021-11-25 18:11:27,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2021-11-25 18:11:33,605 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:11:33,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 13 [2021-11-25 18:11:33,650 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:11:33,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 69 [2021-11-25 18:11:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 18:11:33,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:11:34,834 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2021-11-25 18:11:45,465 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.