./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:28:45,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:28:45,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:28:45,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:28:45,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:28:45,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:28:45,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:28:45,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:28:45,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:28:45,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:28:45,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:28:45,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:28:45,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:28:45,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:28:45,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:28:45,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:28:45,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:28:45,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:28:45,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:28:45,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:28:45,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:28:45,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:28:45,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:28:45,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:28:45,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:28:45,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:28:45,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:28:45,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:28:45,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:28:45,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:28:45,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:28:45,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:28:45,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:28:45,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:28:45,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:28:45,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:28:45,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:28:45,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:28:45,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:28:45,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:28:45,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:28:45,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:28:45,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:28:45,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:28:45,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:28:45,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:28:45,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:28:45,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:28:45,784 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:28:45,784 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:28:45,784 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:28:45,785 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:28:45,785 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:28:45,785 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:28:45,785 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:28:45,786 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:28:45,787 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:28:45,788 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:28:45,788 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:28:45,789 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:28:45,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:28:45,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:28:45,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:28:45,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:28:45,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:28:45,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:28:45,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:28:45,793 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:28:45,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:28:45,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:28:45,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:28:45,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:28:45,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:28:45,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:28:45,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:28:45,795 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:28:45,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:28:45,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:28:45,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:28:45,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:28:45,797 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2021-11-25 20:28:46,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:28:46,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:28:46,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:28:46,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:28:46,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:28:46,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-25 20:28:46,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/data/776463b23/a74f97061a494592b44ae55c85dfa9de/FLAGab142cefd [2021-11-25 20:28:47,344 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:28:47,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-25 20:28:47,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/data/776463b23/a74f97061a494592b44ae55c85dfa9de/FLAGab142cefd [2021-11-25 20:28:47,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/data/776463b23/a74f97061a494592b44ae55c85dfa9de [2021-11-25 20:28:47,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:28:47,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:28:47,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:28:47,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:28:47,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:28:47,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:28:47" (1/1) ... [2021-11-25 20:28:47,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63dc8c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:47, skipping insertion in model container [2021-11-25 20:28:47,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:28:47" (1/1) ... [2021-11-25 20:28:47,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:28:47,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:28:48,226 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-25 20:28:48,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-25 20:28:49,474 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:49,475 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:49,476 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:49,477 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:49,479 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:49,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:49,506 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:49,509 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:49,510 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,054 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:28:50,056 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:28:50,058 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:28:50,059 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:28:50,062 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:28:50,068 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:28:50,069 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:28:50,070 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:28:50,074 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:28:50,084 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:28:50,415 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:28:50,592 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,597 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:28:50,772 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:28:50,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-25 20:28:50,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-25 20:28:50,882 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,894 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,904 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:50,947 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 20:28:50,948 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 20:28:50,949 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 20:28:50,950 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 20:28:50,951 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 20:28:50,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 20:28:50,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 20:28:50,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 20:28:50,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 20:28:50,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 20:28:50,991 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 20:28:51,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:51,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 20:28:51,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:28:51,651 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:28:51,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51 WrapperNode [2021-11-25 20:28:51,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:28:51,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:28:51,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:28:51,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:28:51,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (1/1) ... [2021-11-25 20:28:51,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (1/1) ... [2021-11-25 20:28:51,967 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 861 [2021-11-25 20:28:51,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:28:51,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:28:51,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:28:51,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:28:51,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (1/1) ... [2021-11-25 20:28:51,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (1/1) ... [2021-11-25 20:28:52,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (1/1) ... [2021-11-25 20:28:52,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (1/1) ... [2021-11-25 20:28:52,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (1/1) ... [2021-11-25 20:28:52,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (1/1) ... [2021-11-25 20:28:52,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (1/1) ... [2021-11-25 20:28:52,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:28:52,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:28:52,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:28:52,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:28:52,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (1/1) ... [2021-11-25 20:28:52,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:28:52,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:28:52,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:28:52,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:28:52,230 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-25 20:28:52,231 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-25 20:28:52,231 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-25 20:28:52,232 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton32 [2021-11-25 20:28:52,233 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton32 [2021-11-25 20:28:52,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:28:52,234 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 20:28:52,235 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 20:28:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:28:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:28:52,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:28:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:28:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:28:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:28:52,237 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-25 20:28:52,237 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-25 20:28:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:28:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:28:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 20:28:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 20:28:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-25 20:28:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-25 20:28:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:28:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:28:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-25 20:28:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-25 20:28:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:28:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:28:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-25 20:28:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-25 20:28:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:28:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 20:28:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 20:28:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:28:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:28:52,582 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:28:52,592 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:28:54,261 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:28:54,559 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:28:54,560 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:28:54,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:28:54 BoogieIcfgContainer [2021-11-25 20:28:54,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:28:54,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:28:54,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:28:54,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:28:54,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:28:47" (1/3) ... [2021-11-25 20:28:54,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453ebf79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:28:54, skipping insertion in model container [2021-11-25 20:28:54,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:28:51" (2/3) ... [2021-11-25 20:28:54,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453ebf79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:28:54, skipping insertion in model container [2021-11-25 20:28:54,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:28:54" (3/3) ... [2021-11-25 20:28:54,577 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness.i [2021-11-25 20:28:54,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:28:54,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:28:54,678 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:28:54,707 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:28:54,708 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:28:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 55 states have internal predecessors, (64), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-25 20:28:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 20:28:54,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:54,745 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:54,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:28:54,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:54,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1691549819, now seen corresponding path program 1 times [2021-11-25 20:28:54,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:54,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466128906] [2021-11-25 20:28:54,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:54,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-25 20:29:02,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:29:02,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466128906] [2021-11-25 20:29:02,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466128906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:29:02,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216471858] [2021-11-25 20:29:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:29:02,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:29:02,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:29:02,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:29:02,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cd54e3-e22b-4a83-bb52-d04a3f83bfd8/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:29:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:02,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 2611 conjuncts, 123 conjunts are in the unsatisfiable core [2021-11-25 20:29:02,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:29:03,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 20:29:03,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 20:29:03,993 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:29:03,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 20:29:04,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 20:29:04,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:29:09,663 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-25 20:29:09,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-11-25 20:29:09,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 15 [2021-11-25 20:29:10,332 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 20:29:10,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 20:29:10,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-11-25 20:29:11,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-11-25 20:29:17,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 143 treesize of output 127 [2021-11-25 20:29:17,443 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:29:17,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 166 treesize of output 134 [2021-11-25 20:29:17,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 95 treesize of output 79 [2021-11-25 20:29:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 20:29:17,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:29:21,204 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-25 20:37:37,230 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.