./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS --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 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --- 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-8393723 [2022-11-19 08:34:17,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:34:17,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:34:17,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:34:17,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:34:17,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:34:17,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:34:17,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:34:17,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:34:17,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:34:17,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:34:17,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:34:17,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:34:17,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:34:17,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:34:17,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:34:17,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:34:17,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:34:17,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:34:17,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:34:17,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:34:17,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:34:17,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:34:17,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:34:18,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:34:18,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:34:18,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:34:18,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:34:18,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:34:18,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:34:18,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:34:18,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:34:18,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:34:18,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:34:18,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:34:18,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:34:18,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:34:18,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:34:18,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:34:18,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:34:18,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:34:18,010 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:34:18,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:34:18,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:34:18,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:34:18,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:34:18,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:34:18,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:34:18,031 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:34:18,032 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:34:18,032 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:34:18,032 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:34:18,032 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:34:18,033 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:34:18,033 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:34:18,033 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:34:18,033 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:34:18,034 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:34:18,034 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:34:18,034 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:34:18,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:34:18,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:34:18,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:34:18,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:34:18,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:34:18,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:34:18,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:34:18,036 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:34:18,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:34:18,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:34:18,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:34:18,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:34:18,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:34:18,039 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:34:18,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:34:18,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:34:18,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:34:18,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:34:18,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:34:18,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:34:18,041 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_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 [2022-11-19 08:34:18,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:34:18,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:34:18,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:34:18,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:34:18,389 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:34:18,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2022-11-19 08:34:18,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/data/8518c98a7/60949245ee2946028e2c88d6fbbda2cf/FLAG07b41183c [2022-11-19 08:34:19,384 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:34:19,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2022-11-19 08:34:19,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/data/8518c98a7/60949245ee2946028e2c88d6fbbda2cf/FLAG07b41183c [2022-11-19 08:34:19,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/data/8518c98a7/60949245ee2946028e2c88d6fbbda2cf [2022-11-19 08:34:19,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:34:19,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:34:19,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:34:19,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:34:19,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:34:19,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:34:19" (1/1) ... [2022-11-19 08:34:19,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47938f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:19, skipping insertion in model container [2022-11-19 08:34:19,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:34:19" (1/1) ... [2022-11-19 08:34:19,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:34:19,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:34:20,262 WARN L234 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_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2022-11-19 08:34:20,271 WARN L234 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_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2022-11-19 08:34:21,293 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:21,298 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:21,299 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:21,300 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:21,303 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:21,319 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:21,321 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:21,322 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:21,325 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:21,722 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 08:34:21,723 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 08:34:21,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 08:34:21,725 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 08:34:21,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 08:34:21,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 08:34:21,728 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 08:34:21,729 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 08:34:21,729 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 08:34:21,730 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 08:34:21,956 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 08:34:22,033 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,034 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,130 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,130 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:34:22,283 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:34:22,311 WARN L234 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_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2022-11-19 08:34:22,320 WARN L234 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_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2022-11-19 08:34:22,374 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,374 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,375 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,375 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,377 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,404 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,404 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,405 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,406 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,462 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 08:34:22,463 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 08:34:22,464 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 08:34:22,464 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 08:34:22,466 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 08:34:22,466 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 08:34:22,467 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 08:34:22,467 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 08:34:22,468 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 08:34:22,468 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 08:34:22,496 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 08:34:22,513 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,513 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,568 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,568 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:34:22,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:34:22,955 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:34:22,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22 WrapperNode [2022-11-19 08:34:22,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:34:22,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:34:22,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:34:22,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:34:22,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,152 INFO L138 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 958 [2022-11-19 08:34:23,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:34:23,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:34:23,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:34:23,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:34:23,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:34:23,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:34:23,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:34:23,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:34:23,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (1/1) ... [2022-11-19 08:34:23,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:34:23,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:23,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:34:23,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:34:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-19 08:34:23,343 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-19 08:34:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-19 08:34:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-19 08:34:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:34:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-19 08:34:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-19 08:34:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:34:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-19 08:34:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-19 08:34:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 08:34:23,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 08:34:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:34:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:34:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:34:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:34:23,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:34:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-19 08:34:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-19 08:34:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:34:23,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:34:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:34:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-19 08:34:23,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-19 08:34:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:34:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:34:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-19 08:34:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-19 08:34:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-19 08:34:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-19 08:34:23,349 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-11-19 08:34:23,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-11-19 08:34:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-19 08:34:23,350 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-19 08:34:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:34:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:34:23,737 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:34:23,739 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:34:25,164 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:34:25,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:34:25,592 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:34:25,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:34:25 BoogieIcfgContainer [2022-11-19 08:34:25,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:34:25,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:34:25,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:34:25,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:34:25,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:34:19" (1/3) ... [2022-11-19 08:34:25,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d5b1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:34:25, skipping insertion in model container [2022-11-19 08:34:25,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:34:22" (2/3) ... [2022-11-19 08:34:25,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d5b1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:34:25, skipping insertion in model container [2022-11-19 08:34:25,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:34:25" (3/3) ... [2022-11-19 08:34:25,606 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2022-11-19 08:34:25,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:34:25,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:34:25,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:34:25,701 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;@7653d202, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:34:25,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:34:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-19 08:34:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 08:34:25,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:34:25,718 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 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] [2022-11-19 08:34:25,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:34:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:34:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2063670608, now seen corresponding path program 1 times [2022-11-19 08:34:25,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:34:25,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4393088] [2022-11-19 08:34:25,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:34:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-19 08:34:34,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:34:34,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4393088] [2022-11-19 08:34:34,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4393088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:34:34,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733607679] [2022-11-19 08:34:34,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:34:34,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:34:34,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:34:34,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:34:34,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3727e89d-6dfa-4791-bf95-2dbb6608fa9d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:34:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:34:35,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-19 08:34:35,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:34:35,473 INFO L350 Elim1Store]: Elim1 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 6 treesize of output 5 [2022-11-19 08:34:35,479 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:35,488 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 08:34:37,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:37,527 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 08:34:37,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2022-11-19 08:34:37,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:34:37,540 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 08:34:37,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2022-11-19 08:34:38,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2022-11-19 08:34:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:34:38,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:34:39,514 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2022-11-19 08:34:55,319 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.