./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/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_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh --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 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 --- 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 13:51:56,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:51:56,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:51:56,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:51:56,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:51:56,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:51:56,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:51:56,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:51:56,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:51:56,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:51:56,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:51:56,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:51:56,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:51:56,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:51:56,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:51:56,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:51:56,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:51:56,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:51:56,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:51:56,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:51:56,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:51:56,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:51:56,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:51:56,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:51:56,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:51:56,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:51:56,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:51:56,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:51:56,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:51:56,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:51:56,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:51:56,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:51:56,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:51:56,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:51:56,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:51:56,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:51:56,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:51:56,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:51:56,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:51:56,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:51:56,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:51:56,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 13:51:56,869 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:51:56,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:51:56,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:51:56,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:51:56,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:51:56,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:51:56,870 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:51:56,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:51:56,871 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:51:56,871 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:51:56,871 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:51:56,871 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:51:56,871 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:51:56,871 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:51:56,872 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:51:56,872 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:51:56,872 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:51:56,872 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:51:56,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:51:56,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:51:56,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:51:56,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:51:56,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:51:56,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:51:56,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:51:56,874 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:51:56,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:51:56,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:51:56,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:51:56,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:51:56,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:51:56,875 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:51:56,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:51:56,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:51:56,876 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:51:56,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:51:56,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:51:56,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:51:56,876 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_e78540c1-ed44-4436-b188-a820e84a3594/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0658a835d559c56129f1a85a00e9d3bbd205d66ef64b5c7d14ae72b3d1b496e0 [2022-12-14 13:51:57,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:51:57,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:51:57,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:51:57,104 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:51:57,104 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:51:57,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2022-12-14 13:51:59,682 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:51:59,994 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:51:59,994 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i [2022-12-14 13:52:00,012 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/data/f60d84dee/d201c4ed5d174438a932322fa37dcd01/FLAG3e2d8c5a0 [2022-12-14 13:52:00,022 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/data/f60d84dee/d201c4ed5d174438a932322fa37dcd01 [2022-12-14 13:52:00,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:52:00,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:52:00,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:52:00,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:52:00,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:52:00,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:52:00" (1/1) ... [2022-12-14 13:52:00,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a806a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:00, skipping insertion in model container [2022-12-14 13:52:00,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:52:00" (1/1) ... [2022-12-14 13:52:00,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:52:00,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:52:00,308 WARN L237 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_e78540c1-ed44-4436-b188-a820e84a3594/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2022-12-14 13:52:00,317 WARN L237 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_e78540c1-ed44-4436-b188-a820e84a3594/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2022-12-14 13:52:01,051 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,052 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,052 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,053 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,054 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,072 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,072 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,073 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,074 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,143 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:52:01,143 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:52:01,144 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:52:01,148 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 13:52:01,150 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 13:52:01,151 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 13:52:01,372 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 13:52:01,374 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 13:52:01,375 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 13:52:01,376 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 13:52:01,377 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 13:52:01,378 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 13:52:01,379 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 13:52:01,379 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 13:52:01,380 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 13:52:01,380 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 13:52:01,381 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 13:52:01,506 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 13:52:01,526 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 13:52:01,543 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 13:52:01,552 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 13:52:01,574 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,575 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,610 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 13:52:01,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:52:01,644 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:52:01,653 WARN L237 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_e78540c1-ed44-4436-b188-a820e84a3594/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4504,4517] [2022-12-14 13:52:01,653 WARN L237 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_e78540c1-ed44-4436-b188-a820e84a3594/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lookup_harness.i[4564,4577] [2022-12-14 13:52:01,675 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,676 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,676 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,676 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,677 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,681 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,681 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,682 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,682 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,687 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:52:01,687 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:52:01,687 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 13:52:01,689 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 13:52:01,690 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 13:52:01,690 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 13:52:01,718 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 13:52:01,719 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 13:52:01,720 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 13:52:01,721 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 13:52:01,721 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 13:52:01,722 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 13:52:01,723 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 13:52:01,723 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 13:52:01,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 13:52:01,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 13:52:01,725 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 13:52:01,746 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 13:52:01,759 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 13:52:01,770 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 13:52:01,777 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 13:52:01,802 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,802 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 13:52:01,830 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 13:52:01,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:52:01,989 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:52:01,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01 WrapperNode [2022-12-14 13:52:01,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:52:01,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:52:01,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:52:01,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:52:01,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,115 INFO L138 Inliner]: procedures = 691, calls = 2648, calls flagged for inlining = 58, calls inlined = 4, statements flattened = 828 [2022-12-14 13:52:02,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:52:02,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:52:02,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:52:02,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:52:02,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,167 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:52:02,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:52:02,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:52:02,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:52:02,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (1/1) ... [2022-12-14 13:52:02,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:52:02,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:52:02,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:52:02,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:52:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-12-14 13:52:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-12-14 13:52:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:52:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 13:52:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 13:52:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 13:52:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-12-14 13:52:02,240 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-12-14 13:52:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 13:52:02,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 13:52:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 13:52:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:52:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-12-14 13:52:02,240 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-12-14 13:52:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 13:52:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:52:02,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:52:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 13:52:02,241 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 13:52:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-14 13:52:02,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-14 13:52:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 13:52:02,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 13:52:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:52:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 13:52:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 13:52:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 13:52:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-12-14 13:52:02,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-12-14 13:52:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lookup [2022-12-14 13:52:02,242 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lookup [2022-12-14 13:52:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:52:02,422 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:52:02,423 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:52:03,287 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:52:03,399 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:52:03,399 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:52:03,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:52:03 BoogieIcfgContainer [2022-12-14 13:52:03,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:52:03,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:52:03,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:52:03,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:52:03,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:52:00" (1/3) ... [2022-12-14 13:52:03,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1408727c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:52:03, skipping insertion in model container [2022-12-14 13:52:03,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:52:01" (2/3) ... [2022-12-14 13:52:03,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1408727c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:52:03, skipping insertion in model container [2022-12-14 13:52:03,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:52:03" (3/3) ... [2022-12-14 13:52:03,409 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lookup_harness.i [2022-12-14 13:52:03,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:52:03,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:52:03,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:52:03,463 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;@5137f0cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:52:03,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:52:03,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 57 states have internal predecessors, (68), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-12-14 13:52:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 13:52:03,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:52:03,474 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2022-12-14 13:52:03,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:52:03,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:52:03,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1596270366, now seen corresponding path program 1 times [2022-12-14 13:52:03,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:52:03,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289852301] [2022-12-14 13:52:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:52:03,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:52:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:52:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 13:52:08,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:52:08,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289852301] [2022-12-14 13:52:08,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289852301] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:52:08,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834544731] [2022-12-14 13:52:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:52:08,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:52:08,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:52:08,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:52:08,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e78540c1-ed44-4436-b188-a820e84a3594/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:52:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:52:09,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 99 conjunts are in the unsatisfiable core [2022-12-14 13:52:09,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:52:09,212 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 [2022-12-14 13:52:09,217 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 [2022-12-14 13:52:09,733 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 17 treesize of output 13 [2022-12-14 13:52:09,738 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 17 treesize of output 13 [2022-12-14 13:52:09,743 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 21 treesize of output 13 [2022-12-14 13:52:09,747 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 21 treesize of output 13 [2022-12-14 13:52:09,758 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 [2022-12-14 13:52:10,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:52:10,910 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:52:10,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 39 [2022-12-14 13:52:10,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:52:10,921 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-12-14 13:52:10,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 32 [2022-12-14 13:52:11,298 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 21 treesize of output 13 [2022-12-14 13:52:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 13:52:11,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:52:12,284 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-12-14 13:52:22,925 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.