./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW --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 efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e --- 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-4e7fbc6 [2022-11-23 14:58:44,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:58:44,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:58:44,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:58:44,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:58:44,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:58:44,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:58:44,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:58:44,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:58:44,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:58:44,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:58:44,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:58:44,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:58:44,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:58:44,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:58:44,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:58:44,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:58:44,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:58:44,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:58:44,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:58:44,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:58:44,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:58:44,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:58:44,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:58:44,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:58:44,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:58:44,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:58:44,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:58:44,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:58:44,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:58:44,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:58:44,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:58:44,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:58:44,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:58:44,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:58:44,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:58:44,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:58:44,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:58:44,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:58:44,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:58:44,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:58:44,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:58:44,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:58:44,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:58:44,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:58:44,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:58:44,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:58:44,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:58:44,680 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:58:44,680 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:58:44,680 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:58:44,681 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:58:44,682 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:58:44,682 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:58:44,682 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:58:44,683 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:58:44,683 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:58:44,683 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:58:44,684 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:58:44,684 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:58:44,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:58:44,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:58:44,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:58:44,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:58:44,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:58:44,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:58:44,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:58:44,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:58:44,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:58:44,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:58:44,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:58:44,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:58:44,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:58:44,689 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:58:44,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:58:44,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:58:44,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:58:44,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:58:44,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:58:44,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:58:44,691 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_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e [2022-11-23 14:58:45,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:58:45,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:58:45,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:58:45,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:58:45,059 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:58:45,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2022-11-23 14:58:48,200 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:58:48,755 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:58:48,756 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2022-11-23 14:58:48,797 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/data/d3e9dc98a/6a8857fb91144cf58a1a9047dc423e2b/FLAGb8a91001b [2022-11-23 14:58:48,815 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/data/d3e9dc98a/6a8857fb91144cf58a1a9047dc423e2b [2022-11-23 14:58:48,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:58:48,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:58:48,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:58:48,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:58:48,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:58:48,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:58:48" (1/1) ... [2022-11-23 14:58:48,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16651ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:48, skipping insertion in model container [2022-11-23 14:58:48,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:58:48" (1/1) ... [2022-11-23 14:58:48,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:58:48,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:58:49,316 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_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2022-11-23 14:58:49,325 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_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2022-11-23 14:58:50,377 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:50,382 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:50,383 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:50,384 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:50,386 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:50,413 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:50,414 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:50,416 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:50,417 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:50,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 14:58:50,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 14:58:50,915 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 14:58:50,917 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 14:58:50,921 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 14:58:50,923 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 14:58:50,926 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 14:58:50,928 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 14:58:50,930 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 14:58:50,931 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 14:58:51,114 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 14:58:51,289 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,290 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:58:51,469 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:58:51,502 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_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2022-11-23 14:58:51,504 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_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2022-11-23 14:58:51,558 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,559 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,559 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,560 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,560 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,567 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,568 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,569 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,569 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,616 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 14:58:51,617 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 14:58:51,617 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 14:58:51,619 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 14:58:51,623 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 14:58:51,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 14:58:51,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 14:58:51,625 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 14:58:51,626 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 14:58:51,630 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 14:58:51,667 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 14:58:51,755 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,755 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 14:58:51,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:58:52,061 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:58:52,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52 WrapperNode [2022-11-23 14:58:52,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:58:52,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:58:52,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:58:52,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:58:52,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,368 INFO L138 Inliner]: procedures = 691, calls = 2665, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 886 [2022-11-23 14:58:52,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:58:52,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:58:52,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:58:52,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:58:52,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:58:52,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:58:52,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:58:52,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:58:52,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (1/1) ... [2022-11-23 14:58:52,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:58:52,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:58:52,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:58:52,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:58:52,604 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-23 14:58:52,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-23 14:58:52,604 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:58:52,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:58:52,605 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-23 14:58:52,606 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-23 14:58:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:58:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 14:58:52,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 14:58:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:58:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:58:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-11-23 14:58:52,608 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-11-23 14:58:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:58:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-23 14:58:52,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-23 14:58:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:58:52,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:58:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-23 14:58:52,610 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-23 14:58:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-23 14:58:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-23 14:58:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:58:52,611 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:58:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:58:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:58:52,611 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-11-23 14:58:52,612 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-11-23 14:58:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:58:52,612 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-23 14:58:52,613 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-23 14:58:52,613 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-23 14:58:52,613 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-23 14:58:52,613 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-11-23 14:58:52,613 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-11-23 14:58:52,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:58:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2022-11-23 14:58:52,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2022-11-23 14:58:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:58:53,009 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:58:53,011 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:58:54,437 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:58:54,759 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:58:54,759 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:58:54,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:58:54 BoogieIcfgContainer [2022-11-23 14:58:54,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:58:54,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:58:54,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:58:54,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:58:54,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:58:48" (1/3) ... [2022-11-23 14:58:54,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241bbb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:58:54, skipping insertion in model container [2022-11-23 14:58:54,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:58:52" (2/3) ... [2022-11-23 14:58:54,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241bbb83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:58:54, skipping insertion in model container [2022-11-23 14:58:54,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:58:54" (3/3) ... [2022-11-23 14:58:54,780 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness.i [2022-11-23 14:58:54,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:58:54,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:58:54,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:58:54,884 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;@76978a44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:58:54,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:58:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 61 states have (on average 1.180327868852459) internal successors, (72), 62 states have internal predecessors, (72), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-23 14:58:54,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 14:58:54,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:58:54,901 INFO L195 NwaCegarLoop]: trace histogram [7, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:58:54,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:58:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:58:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1989659951, now seen corresponding path program 1 times [2022-11-23 14:58:54,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:58:54,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870211284] [2022-11-23 14:58:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:58:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:58:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 14:59:18,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:59:18,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870211284] [2022-11-23 14:59:18,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870211284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:59:18,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624271992] [2022-11-23 14:59:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:59:18,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:59:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:59:18,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:59:18,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6898b60-2d9c-4a70-8c84-718e0aeb5e83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:59:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:59:19,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 132 conjunts are in the unsatisfiable core [2022-11-23 14:59:19,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:59:19,316 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:59:19,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-11-23 14:59:20,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:20,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:20,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:20,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:59:20,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 51 [2022-11-23 14:59:20,818 INFO L350 Elim1Store]: Elim1 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 38 treesize of output 38 [2022-11-23 14:59:20,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-23 14:59:21,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-11-23 14:59:21,025 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-23 14:59:31,146 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:59:31,147 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 47 [2022-11-23 14:59:31,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:59:31,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 141 treesize of output 133 [2022-11-23 14:59:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 14:59:32,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:59:35,090 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-23 15:07:01,767 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.