./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur --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 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- 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-38b53e6 [2022-11-25 22:39:59,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:39:59,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:39:59,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:39:59,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:39:59,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:39:59,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:39:59,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:39:59,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:39:59,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:39:59,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:39:59,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:39:59,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:39:59,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:39:59,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:39:59,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:39:59,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:39:59,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:39:59,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:39:59,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:39:59,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:39:59,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:39:59,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:39:59,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:39:59,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:39:59,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:39:59,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:39:59,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:39:59,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:39:59,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:39:59,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:39:59,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:39:59,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:39:59,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:39:59,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:39:59,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:39:59,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:39:59,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:39:59,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:39:59,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:39:59,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:39:59,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 22:39:59,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:39:59,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:39:59,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:39:59,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:39:59,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:39:59,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:39:59,523 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:39:59,524 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:39:59,524 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:39:59,524 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:39:59,524 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:39:59,525 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:39:59,525 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:39:59,525 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:39:59,526 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:39:59,526 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:39:59,526 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:39:59,526 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:39:59,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:39:59,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:39:59,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:39:59,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:39:59,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:39:59,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:39:59,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:39:59,529 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:39:59,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:39:59,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:39:59,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:39:59,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:39:59,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:39:59,531 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:39:59,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:39:59,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:39:59,532 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:39:59,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:39:59,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:39:59,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:39:59,533 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_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2022-11-25 22:39:59,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:39:59,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:39:59,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:39:59,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:39:59,883 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:39:59,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-11-25 22:40:03,647 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:40:04,297 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:40:04,298 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-11-25 22:40:04,340 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/data/a37e80cf5/e8d312100e1c44be853e879d55da5b40/FLAGad2bc0f7a [2022-11-25 22:40:04,365 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/data/a37e80cf5/e8d312100e1c44be853e879d55da5b40 [2022-11-25 22:40:04,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:40:04,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:40:04,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:40:04,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:40:04,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:40:04,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:40:04" (1/1) ... [2022-11-25 22:40:04,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e0b28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:04, skipping insertion in model container [2022-11-25 22:40:04,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:40:04" (1/1) ... [2022-11-25 22:40:04,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:40:04,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:40:04,895 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_992f0eea-746d-4e2d-a7da-045f06912642/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-11-25 22:40:04,907 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_992f0eea-746d-4e2d-a7da-045f06912642/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-11-25 22:40:05,983 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:06,004 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:06,014 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,015 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,016 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,017 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,019 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,025 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:06,037 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,038 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,041 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,042 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,143 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:40:06,144 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:40:06,145 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:40:06,152 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 22:40:06,156 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 22:40:06,157 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 22:40:06,371 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:06,596 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 22:40:06,597 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 22:40:06,599 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 22:40:06,600 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 22:40:06,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 22:40:06,603 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 22:40:06,604 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 22:40:06,605 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 22:40:06,606 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 22:40:06,607 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 22:40:06,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 22:40:06,822 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 22:40:06,875 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:06,877 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:06,887 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:06,891 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:06,893 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:06,894 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 22:40:06,906 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:40:06,940 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:40:06,950 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,950 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:06,966 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:06,994 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,027 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 22:40:07,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:40:07,137 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:40:07,167 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_992f0eea-746d-4e2d-a7da-045f06912642/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-11-25 22:40:07,168 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_992f0eea-746d-4e2d-a7da-045f06912642/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-11-25 22:40:07,203 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,217 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,262 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,263 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,263 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,264 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,265 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,267 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,273 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,273 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,274 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,293 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,352 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:40:07,353 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:40:07,353 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 22:40:07,359 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 22:40:07,367 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 22:40:07,368 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 22:40:07,372 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,416 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 22:40:07,418 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 22:40:07,419 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 22:40:07,421 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 22:40:07,422 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 22:40:07,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 22:40:07,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 22:40:07,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 22:40:07,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 22:40:07,428 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 22:40:07,428 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 22:40:07,480 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 22:40:07,513 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,517 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,525 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,533 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,534 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,535 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 22:40:07,550 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:40:07,583 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 22:40:07,592 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,592 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 22:40:07,606 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,611 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 22:40:07,639 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 22:40:07,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:40:07,880 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:40:07,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07 WrapperNode [2022-11-25 22:40:07,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:40:07,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:40:07,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:40:07,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:40:07,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,142 INFO L138 Inliner]: procedures = 691, calls = 2676, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 967 [2022-11-25 22:40:08,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:40:08,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:40:08,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:40:08,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:40:08,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,218 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:40:08,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:40:08,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:40:08,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:40:08,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (1/1) ... [2022-11-25 22:40:08,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:40:08,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:40:08,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:40:08,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:40:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-25 22:40:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-25 22:40:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:40:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 22:40:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 22:40:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 22:40:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:40:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:40:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:40:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:40:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:40:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-25 22:40:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-25 22:40:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:40:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:40:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 22:40:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 22:40:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-25 22:40:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-25 22:40:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 22:40:08,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 22:40:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:40:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:40:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 22:40:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-25 22:40:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-25 22:40:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-11-25 22:40:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-11-25 22:40:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 22:40:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-25 22:40:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-25 22:40:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-25 22:40:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-25 22:40:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:40:08,836 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:40:08,839 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:40:10,699 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:40:10,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:40:10,989 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 22:40:10,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:40:10 BoogieIcfgContainer [2022-11-25 22:40:10,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:40:10,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:40:10,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:40:11,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:40:11,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:40:04" (1/3) ... [2022-11-25 22:40:11,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf8b510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:40:11, skipping insertion in model container [2022-11-25 22:40:11,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:40:07" (2/3) ... [2022-11-25 22:40:11,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf8b510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:40:11, skipping insertion in model container [2022-11-25 22:40:11,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:40:10" (3/3) ... [2022-11-25 22:40:11,008 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2022-11-25 22:40:11,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:40:11,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:40:11,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:40:11,132 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;@4ad79af8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:40:11,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:40:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-25 22:40:11,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 22:40:11,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:11,155 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 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] [2022-11-25 22:40:11,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:40:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:11,165 INFO L85 PathProgramCache]: Analyzing trace with hash -318388025, now seen corresponding path program 1 times [2022-11-25 22:40:11,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:11,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082691376] [2022-11-25 22:40:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:11,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 22:40:12,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:12,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082691376] [2022-11-25 22:40:12,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082691376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:40:12,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:40:12,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:40:12,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540946979] [2022-11-25 22:40:12,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:40:12,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:40:12,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:40:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:40:12,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:40:12,315 INFO L87 Difference]: Start difference. First operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 22:40:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:12,850 INFO L93 Difference]: Finished difference Result 228 states and 344 transitions. [2022-11-25 22:40:12,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:40:12,853 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 61 [2022-11-25 22:40:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:12,864 INFO L225 Difference]: With dead ends: 228 [2022-11-25 22:40:12,864 INFO L226 Difference]: Without dead ends: 138 [2022-11-25 22:40:12,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:40:12,873 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:12,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:40:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-25 22:40:12,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-25 22:40:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-25 22:40:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 192 transitions. [2022-11-25 22:40:13,001 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 192 transitions. Word has length 61 [2022-11-25 22:40:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:13,005 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 192 transitions. [2022-11-25 22:40:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 22:40:13,006 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 192 transitions. [2022-11-25 22:40:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 22:40:13,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:13,013 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:40:13,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:40:13,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:40:13,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash -402709972, now seen corresponding path program 1 times [2022-11-25 22:40:13,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:13,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339188163] [2022-11-25 22:40:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:13,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 22:40:31,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:31,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339188163] [2022-11-25 22:40:31,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339188163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:40:31,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:40:31,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 22:40:31,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237067021] [2022-11-25 22:40:31,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:40:31,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 22:40:31,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:40:31,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 22:40:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:40:31,769 INFO L87 Difference]: Start difference. First operand 138 states and 192 transitions. Second operand has 11 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 22:40:36,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:36,754 INFO L93 Difference]: Finished difference Result 188 states and 264 transitions. [2022-11-25 22:40:36,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:40:36,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 64 [2022-11-25 22:40:36,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:36,759 INFO L225 Difference]: With dead ends: 188 [2022-11-25 22:40:36,759 INFO L226 Difference]: Without dead ends: 186 [2022-11-25 22:40:36,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:40:36,761 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 121 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:36,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1610 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 22:40:36,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-25 22:40:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 142. [2022-11-25 22:40:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 74 states have (on average 1.162162162162162) internal successors, (86), 75 states have internal predecessors, (86), 55 states have call successors, (55), 12 states have call predecessors, (55), 12 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-25 22:40:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2022-11-25 22:40:36,801 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 195 transitions. Word has length 64 [2022-11-25 22:40:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:36,802 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 195 transitions. [2022-11-25 22:40:36,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 22:40:36,803 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 195 transitions. [2022-11-25 22:40:36,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 22:40:36,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:36,805 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 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] [2022-11-25 22:40:36,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:40:36,806 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:40:36,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash -660648870, now seen corresponding path program 1 times [2022-11-25 22:40:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:36,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470049724] [2022-11-25 22:40:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:41:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-25 22:41:03,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:41:03,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470049724] [2022-11-25 22:41:03,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470049724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:41:03,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542579335] [2022-11-25 22:41:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:41:03,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:41:03,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:41:03,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:41:03,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_992f0eea-746d-4e2d-a7da-045f06912642/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:41:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:41:17,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2864 conjuncts, 239 conjunts are in the unsatisfiable core [2022-11-25 22:41:17,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:41:17,785 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:41:17,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-25 22:41:18,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2022-11-25 22:41:19,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:41:20,211 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 [2022-11-25 22:41:20,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:20,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:20,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-11-25 22:41:20,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-25 22:41:26,852 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 26 treesize of output 26 [2022-11-25 22:41:26,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:26,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:26,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:26,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:26,897 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 77 treesize of output 69 [2022-11-25 22:41:27,330 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-25 22:41:27,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 53 [2022-11-25 22:41:42,856 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:41:42,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 79 treesize of output 78 [2022-11-25 22:41:42,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:42,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:41:42,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2022-11-25 22:41:43,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 15 [2022-11-25 22:41:43,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:43,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-25 22:41:43,277 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-11-25 22:41:43,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2022-11-25 22:41:51,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:51,320 INFO L350 Elim1Store]: Elim1 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 97 treesize of output 73 [2022-11-25 22:41:51,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:51,336 INFO L350 Elim1Store]: Elim1 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 51 treesize of output 39 [2022-11-25 22:41:51,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 24 [2022-11-25 22:41:51,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:41:51,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:41:51,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2022-11-25 22:41:51,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 75 treesize of output 63 [2022-11-25 22:42:27,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:42:27,314 INFO L350 Elim1Store]: Elim1 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 176 treesize of output 128 [2022-11-25 22:42:27,549 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:42:27,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2022-11-25 22:42:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 22:42:28,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:42:32,431 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-25 22:52:00,976 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.