./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/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_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/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_be8dbe27-2377-4cb9-8758-544b61442adb/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 f57bc64edf303a057c8eafb48480d4e5b764bd411481261d53eb2a101eb82ae8 --- 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 [2022-11-26 01:07:09,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:07:09,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:07:09,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:07:09,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:07:09,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:07:09,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:07:09,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:07:09,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:07:09,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:07:09,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:07:09,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:07:09,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:07:09,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:07:09,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:07:09,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:07:09,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:07:09,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:07:09,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:07:09,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:07:09,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:07:09,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:07:09,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:07:09,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:07:09,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:07:09,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:07:09,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:07:09,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:07:09,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:07:09,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:07:09,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:07:09,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:07:09,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:07:09,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:07:09,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:07:09,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:07:09,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:07:09,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:07:09,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:07:09,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:07:09,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:07:09,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 01:07:09,567 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:07:09,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:07:09,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:07:09,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:07:09,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:07:09,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:07:09,570 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:07:09,570 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:07:09,570 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:07:09,571 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:07:09,572 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:07:09,572 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:07:09,572 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:07:09,572 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:07:09,572 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:07:09,573 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:07:09,573 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:07:09,573 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:07:09,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:07:09,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:07:09,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:07:09,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:07:09,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:07:09,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:07:09,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:07:09,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:07:09,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:07:09,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:07:09,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:07:09,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:07:09,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:07:09,577 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:07:09,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:07:09,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:07:09,578 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:07:09,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:07:09,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:07:09,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:07:09,578 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_be8dbe27-2377-4cb9-8758-544b61442adb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f57bc64edf303a057c8eafb48480d4e5b764bd411481261d53eb2a101eb82ae8 [2022-11-26 01:07:09,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:07:09,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:07:09,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:07:09,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:07:09,850 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:07:09,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i [2022-11-26 01:07:12,806 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:07:13,291 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:07:13,292 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i [2022-11-26 01:07:13,320 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/data/752e37c3d/6cc03f27f6904bc9a3634ff7bd88d56d/FLAG20be8087a [2022-11-26 01:07:13,335 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/data/752e37c3d/6cc03f27f6904bc9a3634ff7bd88d56d [2022-11-26 01:07:13,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:07:13,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:07:13,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:07:13,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:07:13,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:07:13,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:07:13" (1/1) ... [2022-11-26 01:07:13,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4b9884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:13, skipping insertion in model container [2022-11-26 01:07:13,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:07:13" (1/1) ... [2022-11-26 01:07:13,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:07:13,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:07:13,687 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_be8dbe27-2377-4cb9-8758-544b61442adb/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2022-11-26 01:07:13,695 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_be8dbe27-2377-4cb9-8758-544b61442adb/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2022-11-26 01:07:14,698 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 01:07:14,704 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,705 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,706 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,707 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,708 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,723 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,724 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,726 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,727 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,729 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,730 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,731 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,732 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:14,804 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:07:14,805 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:07:14,806 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:07:14,811 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 01:07:14,814 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 01:07:14,815 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 01:07:15,161 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 01:07:15,169 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 01:07:15,170 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 01:07:15,171 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 01:07:15,173 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 01:07:15,177 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 01:07:15,178 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 01:07:15,179 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 01:07:15,180 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 01:07:15,181 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 01:07:15,182 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 01:07:15,381 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 01:07:15,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:07:15,450 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:07:15,477 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_be8dbe27-2377-4cb9-8758-544b61442adb/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4494,4507] [2022-11-26 01:07:15,486 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_be8dbe27-2377-4cb9-8758-544b61442adb/sv-benchmarks/c/aws-c-common/aws_linked_list_back_harness.i[4554,4567] [2022-11-26 01:07:15,540 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 01:07:15,551 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,553 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,553 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,559 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,560 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,567 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,567 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,568 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,569 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,570 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,571 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,571 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,571 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 01:07:15,585 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:07:15,586 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:07:15,586 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 01:07:15,591 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 01:07:15,603 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 01:07:15,603 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 01:07:15,631 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 01:07:15,632 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 01:07:15,632 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 01:07:15,634 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 01:07:15,635 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 01:07:15,637 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 01:07:15,639 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 01:07:15,644 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 01:07:15,645 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 01:07:15,647 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 01:07:15,648 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 01:07:15,680 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 01:07:15,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:07:15,947 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:07:15,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15 WrapperNode [2022-11-26 01:07:15,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:07:15,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:07:15,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:07:15,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:07:15,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,083 INFO L138 Inliner]: procedures = 679, calls = 1044, calls flagged for inlining = 50, calls inlined = 5, statements flattened = 133 [2022-11-26 01:07:16,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:07:16,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:07:16,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:07:16,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:07:16,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:07:16,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:07:16,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:07:16,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:07:16,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (1/1) ... [2022-11-26 01:07:16,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:07:16,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:16,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:07:16,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:07:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_back [2022-11-26 01:07:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_back [2022-11-26 01:07:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:07:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 01:07:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 01:07:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-26 01:07:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-26 01:07:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 01:07:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-11-26 01:07:16,262 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-11-26 01:07:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:07:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 01:07:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:07:16,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:07:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-11-26 01:07:16,264 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-11-26 01:07:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 01:07:16,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 01:07:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:07:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 01:07:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 01:07:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-26 01:07:16,266 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-26 01:07:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-11-26 01:07:16,266 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-11-26 01:07:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:07:16,642 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:07:16,646 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:07:17,083 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:07:17,207 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:07:17,208 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 01:07:17,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:17 BoogieIcfgContainer [2022-11-26 01:07:17,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:07:17,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:07:17,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:07:17,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:07:17,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:07:13" (1/3) ... [2022-11-26 01:07:17,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59df2af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:07:17, skipping insertion in model container [2022-11-26 01:07:17,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:15" (2/3) ... [2022-11-26 01:07:17,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59df2af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:07:17, skipping insertion in model container [2022-11-26 01:07:17,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:17" (3/3) ... [2022-11-26 01:07:17,221 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_back_harness.i [2022-11-26 01:07:17,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:07:17,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:07:17,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:07:17,304 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;@385104e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:07:17,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:07:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-26 01:07:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-26 01:07:17,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:17,320 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:07:17,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:07:17,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash -208090152, now seen corresponding path program 1 times [2022-11-26 01:07:17,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:17,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430496603] [2022-11-26 01:07:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:17,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-26 01:07:18,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:18,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430496603] [2022-11-26 01:07:18,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430496603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:07:18,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856471007] [2022-11-26 01:07:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:18,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:18,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:18,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:07:18,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 01:07:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:18,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-26 01:07:18,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:18,769 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 18 treesize of output 19 [2022-11-26 01:07:18,798 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 18 treesize of output 19 [2022-11-26 01:07:18,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:18,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:18,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:18,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2022-11-26 01:07:18,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:18,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:18,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:18,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2022-11-26 01:07:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-26 01:07:21,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 01:07:21,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856471007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:07:21,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 01:07:21,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2022-11-26 01:07:21,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792239952] [2022-11-26 01:07:21,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:07:21,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 01:07:21,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:07:21,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 01:07:21,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:07:21,235 INFO L87 Difference]: Start difference. First operand has 69 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 36 states have internal predecessors, (43), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-26 01:07:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:22,510 INFO L93 Difference]: Finished difference Result 188 states and 265 transitions. [2022-11-26 01:07:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 01:07:22,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 52 [2022-11-26 01:07:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:22,521 INFO L225 Difference]: With dead ends: 188 [2022-11-26 01:07:22,521 INFO L226 Difference]: Without dead ends: 127 [2022-11-26 01:07:22,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:07:22,528 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 80 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:22,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 347 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 01:07:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-26 01:07:22,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2022-11-26 01:07:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 65 states have internal predecessors, (76), 46 states have call successors, (46), 15 states have call predecessors, (46), 15 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-26 01:07:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2022-11-26 01:07:22,604 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 52 [2022-11-26 01:07:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:22,606 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2022-11-26 01:07:22,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-26 01:07:22,607 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2022-11-26 01:07:22,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-26 01:07:22,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:22,610 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:07:22,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 01:07:22,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-26 01:07:22,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:07:22,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash 575190234, now seen corresponding path program 1 times [2022-11-26 01:07:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:22,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034962217] [2022-11-26 01:07:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:22,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-26 01:07:23,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:23,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034962217] [2022-11-26 01:07:23,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034962217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:07:23,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837408400] [2022-11-26 01:07:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:23,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:23,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:23,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:07:23,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be8dbe27-2377-4cb9-8758-544b61442adb/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 01:07:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:23,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-26 01:07:23,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:23,470 INFO L350 Elim1Store]: Elim1 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 [2022-11-26 01:07:23,642 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 18 treesize of output 19 [2022-11-26 01:07:23,672 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 18 treesize of output 19 [2022-11-26 01:07:23,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:23,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:23,752 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-26 01:07:23,769 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-26 01:07:23,769 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 1 case distinctions, treesize of input 25 treesize of output 29 [2022-11-26 01:07:23,779 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 15 treesize of output 7 [2022-11-26 01:07:23,800 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-26 01:07:23,801 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-26 01:07:23,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:23,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:23,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-26 01:07:23,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-26 01:07:23,954 INFO L321 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2022-11-26 01:07:23,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 158 [2022-11-26 01:07:23,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:23,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:23,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:07:23,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 138 [2022-11-26 01:07:23,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 47 [2022-11-26 01:07:23,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 13 [2022-11-26 01:07:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 5 refuted. 2 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 01:07:28,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:07:35,583 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ 16 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|)) (.cse2 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 16)) (.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse6 (+ 8 |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|))) (and (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse4) 0)) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (= (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse5 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse6) 0)) (or (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (not (= (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|) 0))) (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset|) 0)))) (or (not (= |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base| 0)) (not (= |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset| 0))) (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse4) 0)) (let ((.cse9 (+ |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.offset| 24))) (or (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_224 Int)) (not (= (select (select (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| .cse3)))) (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_224))) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse9) 0))) (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse9) 0))))) (forall ((v_ArrVal_227 (Array Int Int)) (v_ArrVal_226 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_226) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_227) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_back_harness_~#list~0#1.base|) .cse6) 0)))) is different from false [2022-11-26 01:07:36,135 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:07:36,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 380 treesize of output 457 [2022-11-26 01:07:36,810 INFO L321 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2022-11-26 01:07:36,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 119 [2022-11-26 01:07:37,334 INFO L321 Elim1Store]: treesize reduction 228, result has 28.5 percent of original size [2022-11-26 01:07:37,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 22 case distinctions, treesize of input 216 treesize of output 797 [2022-11-26 01:07:39,842 INFO L321 Elim1Store]: treesize reduction 80, result has 27.9 percent of original size [2022-11-26 01:07:39,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 226 [2022-11-26 01:07:40,391 INFO L321 Elim1Store]: treesize reduction 228, result has 28.5 percent of original size [2022-11-26 01:07:40,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 22 case distinctions, treesize of input 352 treesize of output 853 [2022-11-26 01:07:46,064 INFO L321 Elim1Store]: treesize reduction 225, result has 29.5 percent of original size [2022-11-26 01:07:46,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 22 case distinctions, treesize of input 216 treesize of output 800 [2022-11-26 01:07:49,492 INFO L321 Elim1Store]: treesize reduction 225, result has 29.5 percent of original size [2022-11-26 01:07:49,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 22 case distinctions, treesize of input 216 treesize of output 800 [2022-11-26 01:07:52,404 INFO L321 Elim1Store]: treesize reduction 504, result has 22.7 percent of original size [2022-11-26 01:07:52,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 40 case distinctions, treesize of input 852 treesize of output 2142 [2022-11-26 01:08:09,940 INFO L321 Elim1Store]: treesize reduction 690, result has 28.4 percent of original size [2022-11-26 01:08:09,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 45 case distinctions, treesize of input 3624 treesize of output 6169 [2022-11-26 01:08:58,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 01:09:00,286 INFO L321 Elim1Store]: treesize reduction 379, result has 32.4 percent of original size [2022-11-26 01:09:00,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 34 case distinctions, treesize of input 3074 treesize of output 4123 [2022-11-26 01:09:13,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-26 01:09:13,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6