./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_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_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/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_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/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_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/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 e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:19:08,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:19:08,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:19:08,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:19:08,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:19:08,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:19:08,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:19:08,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:19:08,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:19:08,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:19:08,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:19:08,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:19:08,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:19:08,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:19:08,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:19:08,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:19:08,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:19:08,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:19:08,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:19:08,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:19:08,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:19:08,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:19:08,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:19:08,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:19:08,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:19:08,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:19:08,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:19:08,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:19:08,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:19:08,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:19:08,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:19:08,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:19:08,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:19:08,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:19:08,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:19:08,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:19:08,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:19:08,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:19:08,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:19:08,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:19:08,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:19:08,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:19:08,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:19:08,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:19:08,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:19:08,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:19:08,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:19:08,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:19:08,507 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:19:08,508 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:19:08,508 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:19:08,508 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:19:08,509 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:19:08,510 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:19:08,510 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:19:08,510 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:19:08,511 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:19:08,511 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:19:08,511 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:19:08,512 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:19:08,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:19:08,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:19:08,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:19:08,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:19:08,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:19:08,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:19:08,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:19:08,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:19:08,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:19:08,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:19:08,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:19:08,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:19:08,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:19:08,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:19:08,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:19:08,519 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:19:08,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:19:08,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:19:08,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:19:08,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:19:08,520 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_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 [2021-11-25 19:19:08,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:19:08,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:19:08,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:19:08,848 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:19:08,848 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:19:08,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2021-11-25 19:19:08,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/data/5405350eb/92c2379ef85c4c9e987f072e037c9305/FLAG78005e709 [2021-11-25 19:19:09,765 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:19:09,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2021-11-25 19:19:09,818 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/data/5405350eb/92c2379ef85c4c9e987f072e037c9305/FLAG78005e709 [2021-11-25 19:19:10,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/data/5405350eb/92c2379ef85c4c9e987f072e037c9305 [2021-11-25 19:19:10,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:19:10,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:19:10,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:19:10,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:19:10,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:19:10,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:19:10" (1/1) ... [2021-11-25 19:19:10,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120fe364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:10, skipping insertion in model container [2021-11-25 19:19:10,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:19:10" (1/1) ... [2021-11-25 19:19:10,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:19:10,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:19:10,771 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_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4497,4510] [2021-11-25 19:19:10,778 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_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4557,4570] [2021-11-25 19:19:11,784 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:11,785 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:11,785 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:11,786 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:11,787 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:11,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:11,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:11,812 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:11,813 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,197 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:19:12,198 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:19:12,199 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:19:12,200 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:19:12,202 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:19:12,203 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:19:12,203 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:19:12,204 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:19:12,205 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:19:12,205 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:19:12,358 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:19:12,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:19:12,695 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:19:12,727 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_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4497,4510] [2021-11-25 19:19:12,728 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_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4557,4570] [2021-11-25 19:19:12,798 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,799 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,800 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,800 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,801 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,823 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,824 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,825 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:12,880 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:19:12,881 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:19:12,882 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:19:12,883 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:19:12,884 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:19:12,885 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:19:12,885 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:19:12,886 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:19:12,886 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:19:12,887 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:19:12,913 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:19:13,001 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:13,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:19:13,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:19:13,280 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:19:13,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13 WrapperNode [2021-11-25 19:19:13,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:19:13,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:19:13,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:19:13,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:19:13,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (1/1) ... [2021-11-25 19:19:13,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (1/1) ... [2021-11-25 19:19:13,573 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 866 [2021-11-25 19:19:13,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:19:13,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:19:13,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:19:13,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:19:13,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (1/1) ... [2021-11-25 19:19:13,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (1/1) ... [2021-11-25 19:19:13,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (1/1) ... [2021-11-25 19:19:13,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (1/1) ... [2021-11-25 19:19:13,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (1/1) ... [2021-11-25 19:19:13,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (1/1) ... [2021-11-25 19:19:13,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (1/1) ... [2021-11-25 19:19:13,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:19:13,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:19:13,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:19:13,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:19:13,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (1/1) ... [2021-11-25 19:19:13,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:19:13,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:13,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:19:13,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:19:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure htons [2021-11-25 19:19:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-25 19:19:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-25 19:19:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:19:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 19:19:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 19:19:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:19:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:19:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:19:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:19:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:19:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:19:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-25 19:19:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-25 19:19:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:19:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:19:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 19:19:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 19:19:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-25 19:19:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-25 19:19:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:19:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:19:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-25 19:19:13,802 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-25 19:19:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:19:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:19:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-25 19:19:13,803 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-25 19:19:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:19:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 19:19:13,804 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 19:19:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:19:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:19:14,146 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:19:14,149 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:19:15,246 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:19:15,497 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:19:15,497 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:19:15,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:19:15 BoogieIcfgContainer [2021-11-25 19:19:15,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:19:15,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:19:15,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:19:15,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:19:15,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:19:10" (1/3) ... [2021-11-25 19:19:15,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1056530f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:19:15, skipping insertion in model container [2021-11-25 19:19:15,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:19:13" (2/3) ... [2021-11-25 19:19:15,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1056530f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:19:15, skipping insertion in model container [2021-11-25 19:19:15,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:19:15" (3/3) ... [2021-11-25 19:19:15,511 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness.i [2021-11-25 19:19:15,517 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:19:15,518 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:19:15,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:19:15,600 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 19:19:15,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:19:15,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 53 states have internal predecessors, (62), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-25 19:19:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 19:19:15,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:19:15,637 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] [2021-11-25 19:19:15,638 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:19:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:19:15,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1503298337, now seen corresponding path program 1 times [2021-11-25 19:19:15,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:19:15,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238699587] [2021-11-25 19:19:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:15,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:19:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-25 19:19:21,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:19:21,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238699587] [2021-11-25 19:19:21,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238699587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:19:21,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904859541] [2021-11-25 19:19:21,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:19:21,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:19:21,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:19:21,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:19:21,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca9cb98a-02fc-43c7-b09d-bb12a7235cdf/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:19:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:19:22,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 137 conjunts are in the unsatisfiable core [2021-11-25 19:19:22,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:19:22,787 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 19:19:23,487 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 19:19:23,730 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:19:23,731 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 19:19:23,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:19:23,867 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 19:19:28,712 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-25 19:19:28,713 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 19:19:29,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:19:29,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:19:29,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2021-11-25 19:19:29,542 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 19:19:29,542 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 19:19:29,578 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 28 treesize of output 23 [2021-11-25 19:19:30,782 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 28 treesize of output 23 [2021-11-25 19:19:30,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2021-11-25 19:19:38,486 INFO L354 Elim1Store]: treesize reduction 6, result has 92.2 percent of original size [2021-11-25 19:19:38,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 119 treesize of output 133 [2021-11-25 19:19:38,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:19:38,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2021-11-25 19:19:43,243 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 19:19:43,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:19:45,746 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2021-11-25 19:27:52,206 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.