./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_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_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/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_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/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_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/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 5b917a1c951859368fb2463a158063964361d86aeab261c924186dc34055576d --- 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 00:32:25,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:32:25,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:32:25,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:32:25,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:32:25,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:32:25,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:32:25,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:32:25,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:32:25,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:32:25,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:32:25,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:32:25,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:32:25,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:32:25,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:32:25,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:32:25,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:32:25,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:32:25,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:32:25,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:32:25,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:32:25,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:32:25,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:32:25,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:32:25,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:32:25,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:32:25,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:32:25,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:32:25,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:32:25,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:32:25,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:32:25,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:32:25,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:32:25,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:32:25,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:32:25,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:32:25,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:32:25,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:32:25,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:32:25,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:32:25,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:32:25,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:32:25,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:32:25,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:32:25,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:32:25,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:32:25,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:32:25,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:32:25,618 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:32:25,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:32:25,619 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:32:25,619 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:32:25,619 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:32:25,619 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:32:25,620 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:32:25,620 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:32:25,620 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:32:25,620 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:32:25,620 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:32:25,621 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:32:25,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:32:25,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:32:25,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:32:25,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:32:25,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:32:25,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:32:25,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:32:25,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:32:25,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:32:25,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:32:25,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:32:25,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:32:25,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:32:25,628 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:32:25,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:32:25,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:32:25,629 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:32:25,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:32:25,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:32:25,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:32:25,631 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_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b917a1c951859368fb2463a158063964361d86aeab261c924186dc34055576d [2022-11-26 00:32:25,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:32:26,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:32:26,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:32:26,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:32:26,014 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:32:26,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i [2022-11-26 00:32:29,021 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:32:29,499 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:32:29,500 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i [2022-11-26 00:32:29,531 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/data/2dde41bc3/68ef17de279c4ee4836372e301f90b82/FLAG238169bbc [2022-11-26 00:32:29,550 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/data/2dde41bc3/68ef17de279c4ee4836372e301f90b82 [2022-11-26 00:32:29,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:32:29,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:32:29,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:32:29,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:32:29,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:32:29,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:32:29" (1/1) ... [2022-11-26 00:32:29,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bb8921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:29, skipping insertion in model container [2022-11-26 00:32:29,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:32:29" (1/1) ... [2022-11-26 00:32:29,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:32:29,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:32:30,025 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_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2022-11-26 00:32:30,033 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_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2022-11-26 00:32:30,976 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:32:30,982 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:30,983 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:30,984 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:30,985 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:30,986 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,006 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,006 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,008 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,008 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,010 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,011 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,012 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,013 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,083 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:32:31,084 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:32:31,085 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:32:31,090 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 00:32:31,093 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 00:32:31,094 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 00:32:31,373 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 00:32:31,375 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 00:32:31,376 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 00:32:31,378 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 00:32:31,379 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 00:32:31,380 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 00:32:31,381 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 00:32:31,382 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 00:32:31,383 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 00:32:31,383 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 00:32:31,384 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 00:32:31,566 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 00:32:31,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:32:31,615 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:32:31,633 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_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2022-11-26 00:32:31,634 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_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2022-11-26 00:32:31,692 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:32:31,697 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,698 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,699 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,699 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,700 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,712 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,712 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,714 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,715 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,717 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,718 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,718 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,719 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:32:31,730 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:32:31,731 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:32:31,732 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:32:31,737 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 00:32:31,739 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 00:32:31,740 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 00:32:31,771 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 00:32:31,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 00:32:31,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 00:32:31,775 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 00:32:31,776 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 00:32:31,777 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 00:32:31,778 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 00:32:31,779 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 00:32:31,779 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 00:32:31,780 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 00:32:31,781 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 00:32:31,805 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 00:32:31,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:32:32,047 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:32:32,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32 WrapperNode [2022-11-26 00:32:32,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:32:32,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:32:32,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:32:32,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:32:32,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,184 INFO L138 Inliner]: procedures = 679, calls = 1035, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 92 [2022-11-26 00:32:32,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:32:32,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:32:32,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:32:32,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:32:32,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,217 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:32:32,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:32:32,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:32:32,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:32:32,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (1/1) ... [2022-11-26 00:32:32,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:32:32,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:32:32,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:32:32,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:32:32,312 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2022-11-26 00:32:32,312 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2022-11-26 00:32:32,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:32:32,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:32:32,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:32:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-11-26 00:32:32,313 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-11-26 00:32:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-11-26 00:32:32,313 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-11-26 00:32:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:32:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:32:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:32:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:32:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-11-26 00:32:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-11-26 00:32:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 00:32:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 00:32:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:32:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:32:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:32:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:32:32,658 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:32:32,661 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:32:32,906 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:32:33,126 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:32:33,126 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:32:33,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:32:33 BoogieIcfgContainer [2022-11-26 00:32:33,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:32:33,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:32:33,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:32:33,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:32:33,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:32:29" (1/3) ... [2022-11-26 00:32:33,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f72115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:32:33, skipping insertion in model container [2022-11-26 00:32:33,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:32:32" (2/3) ... [2022-11-26 00:32:33,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59f72115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:32:33, skipping insertion in model container [2022-11-26 00:32:33,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:32:33" (3/3) ... [2022-11-26 00:32:33,142 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_init_harness.i [2022-11-26 00:32:33,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:32:33,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:32:33,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:32:33,244 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;@4b8f3f82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:32:33,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:32:33,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-26 00:32:33,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:32:33,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:33,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:33,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:33,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:33,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2020375399, now seen corresponding path program 1 times [2022-11-26 00:32:33,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:33,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426557959] [2022-11-26 00:32:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:33,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:32:35,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:35,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426557959] [2022-11-26 00:32:35,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426557959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:32:35,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:32:35,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:32:35,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497111882] [2022-11-26 00:32:35,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:32:35,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:32:35,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:32:35,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:32:35,676 INFO L87 Difference]: Start difference. First operand has 41 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:32:36,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:36,000 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2022-11-26 00:32:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:32:36,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-26 00:32:36,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:36,012 INFO L225 Difference]: With dead ends: 78 [2022-11-26 00:32:36,012 INFO L226 Difference]: Without dead ends: 41 [2022-11-26 00:32:36,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:32:36,019 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:36,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 179 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:32:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-26 00:32:36,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-26 00:32:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-26 00:32:36,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-11-26 00:32:36,065 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 16 [2022-11-26 00:32:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:36,066 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-11-26 00:32:36,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:32:36,066 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-11-26 00:32:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:32:36,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:36,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:36,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:32:36,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:36,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash 538116661, now seen corresponding path program 1 times [2022-11-26 00:32:36,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:36,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928936114] [2022-11-26 00:32:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:36,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:32:36,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:36,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928936114] [2022-11-26 00:32:36,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928936114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:32:36,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:32:36,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:32:36,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825589336] [2022-11-26 00:32:36,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:32:36,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:32:36,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:36,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:32:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:32:36,238 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:32:36,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:36,438 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2022-11-26 00:32:36,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:32:36,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-11-26 00:32:36,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:36,440 INFO L225 Difference]: With dead ends: 79 [2022-11-26 00:32:36,440 INFO L226 Difference]: Without dead ends: 41 [2022-11-26 00:32:36,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:32:36,441 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:36,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 160 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:32:36,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-26 00:32:36,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-26 00:32:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-26 00:32:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-26 00:32:36,452 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 18 [2022-11-26 00:32:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:36,452 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-26 00:32:36,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:32:36,453 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-26 00:32:36,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-26 00:32:36,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:36,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:36,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:32:36,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:36,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:36,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1170184183, now seen corresponding path program 1 times [2022-11-26 00:32:36,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:36,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475258988] [2022-11-26 00:32:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:36,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:32:36,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:36,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475258988] [2022-11-26 00:32:36,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475258988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:32:36,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:32:36,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:32:36,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852087706] [2022-11-26 00:32:36,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:32:36,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:32:36,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:36,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:32:36,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:32:36,613 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:32:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:36,874 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2022-11-26 00:32:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:32:36,875 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-26 00:32:36,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:36,876 INFO L225 Difference]: With dead ends: 88 [2022-11-26 00:32:36,877 INFO L226 Difference]: Without dead ends: 49 [2022-11-26 00:32:36,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:32:36,878 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 61 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:36,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 170 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:32:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-26 00:32:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-11-26 00:32:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-26 00:32:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-11-26 00:32:36,892 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 20 [2022-11-26 00:32:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:36,892 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-11-26 00:32:36,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:32:36,893 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-11-26 00:32:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-26 00:32:36,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:36,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:32:36,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:32:36,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:36,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1925302219, now seen corresponding path program 1 times [2022-11-26 00:32:36,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:36,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195006150] [2022-11-26 00:32:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:36,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:32:37,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195006150] [2022-11-26 00:32:37,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195006150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:32:37,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:32:37,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:32:37,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64518952] [2022-11-26 00:32:37,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:32:37,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:32:37,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:32:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:32:37,182 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:32:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:37,462 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2022-11-26 00:32:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:32:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-11-26 00:32:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:37,464 INFO L225 Difference]: With dead ends: 88 [2022-11-26 00:32:37,464 INFO L226 Difference]: Without dead ends: 48 [2022-11-26 00:32:37,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:32:37,466 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 54 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:37,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 170 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:32:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-26 00:32:37,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2022-11-26 00:32:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-26 00:32:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-11-26 00:32:37,476 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 21 [2022-11-26 00:32:37,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:37,477 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-11-26 00:32:37,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:32:37,477 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-11-26 00:32:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-26 00:32:37,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:37,478 INFO L195 NwaCegarLoop]: trace histogram [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 00:32:37,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:32:37,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:37,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1961749134, now seen corresponding path program 1 times [2022-11-26 00:32:37,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:37,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720996273] [2022-11-26 00:32:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:37,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:32:38,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:38,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720996273] [2022-11-26 00:32:38,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720996273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:32:38,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:32:38,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:32:38,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097753304] [2022-11-26 00:32:38,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:32:38,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:32:38,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:38,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:32:38,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:32:38,797 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:32:39,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:39,318 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2022-11-26 00:32:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:32:39,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2022-11-26 00:32:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:39,320 INFO L225 Difference]: With dead ends: 85 [2022-11-26 00:32:39,321 INFO L226 Difference]: Without dead ends: 48 [2022-11-26 00:32:39,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:32:39,322 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 42 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:39,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 199 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:32:39,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-26 00:32:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-11-26 00:32:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 29 states have internal predecessors, (33), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-26 00:32:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2022-11-26 00:32:39,342 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 24 [2022-11-26 00:32:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:39,342 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2022-11-26 00:32:39,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-26 00:32:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-11-26 00:32:39,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:32:39,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:39,344 INFO L195 NwaCegarLoop]: trace histogram [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 00:32:39,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:32:39,344 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:32:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:32:39,345 INFO L85 PathProgramCache]: Analyzing trace with hash -314126348, now seen corresponding path program 1 times [2022-11-26 00:32:39,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:32:39,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276742966] [2022-11-26 00:32:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:39,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:32:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:32:39,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:32:39,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276742966] [2022-11-26 00:32:39,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276742966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:32:39,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715249445] [2022-11-26 00:32:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:32:39,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:32:39,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:32:39,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:32:39,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:32:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:32:40,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-26 00:32:40,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:32:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:32:44,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:32:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:32:44,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715249445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:32:44,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [761357287] [2022-11-26 00:32:44,522 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-26 00:32:44,522 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:32:44,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:32:44,533 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:32:44,533 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:32:44,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:44,648 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-26 00:32:44,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 50 [2022-11-26 00:32:44,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:44,724 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:32:44,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-26 00:32:44,755 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-26 00:32:45,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:32:45,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:32:45,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:32:45,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:32:45,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:32:45,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:32:45,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:32:45,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:32:45,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:32:45,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:32:45,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:45,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:32:46,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:32:46,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:32:46,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:32:46,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:32:46,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:32:46,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:32:46,201 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 131 for LOIs [2022-11-26 00:32:46,305 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 133 for LOIs [2022-11-26 00:32:47,480 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 107 for LOIs [2022-11-26 00:32:47,503 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-26 00:32:47,587 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:32:56,309 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1202#(and (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= (select |#length| 3) 12) (<= 0 |__VERIFIER_assert_#in~cond|) (= 0 (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32))) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= 31 (select |#length| 2)) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32)) 0) (<= |__VERIFIER_assert_#in~cond| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| Int)) (and (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 8) 0) (= 32 (select |#length| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 8) 0) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 24)) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 0) 16) (not (= (mod (ite (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 0) 0 1) 256) 0)) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 4)) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 16) 0) (<= 0 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 24) 0) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 0)) (= (select |#valid| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 1) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) 16) 0) (< |#StackHeapBarrier| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 2)) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| 3)))) (= (select |#valid| 4) 1) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 1) 1) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 0) 0) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.base|) (= ~tl_last_error~0 0) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= 40 (select |#length| 4)) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:32:56,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:32:56,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:32:56,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 6] total 22 [2022-11-26 00:32:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20814926] [2022-11-26 00:32:56,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:32:56,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-26 00:32:56,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:32:56,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-26 00:32:56,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2022-11-26 00:32:56,313 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 22 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 9 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-26 00:32:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:32:59,923 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2022-11-26 00:32:59,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:32:59,924 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 9 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 26 [2022-11-26 00:32:59,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:32:59,925 INFO L225 Difference]: With dead ends: 102 [2022-11-26 00:32:59,925 INFO L226 Difference]: Without dead ends: 62 [2022-11-26 00:32:59,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=251, Invalid=2199, Unknown=0, NotChecked=0, Total=2450 [2022-11-26 00:32:59,927 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 161 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:32:59,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 185 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 381 Invalid, 1 Unknown, 0 Unchecked, 1.2s Time] [2022-11-26 00:32:59,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-26 00:32:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2022-11-26 00:32:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-26 00:32:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-11-26 00:32:59,958 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 26 [2022-11-26 00:32:59,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:32:59,958 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-11-26 00:32:59,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 9 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-26 00:32:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-11-26 00:32:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-26 00:32:59,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:32:59,959 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-26 00:32:59,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-26 00:33:00,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:00,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:00,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:00,165 INFO L85 PathProgramCache]: Analyzing trace with hash -694288424, now seen corresponding path program 1 times [2022-11-26 00:33:00,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:00,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921339517] [2022-11-26 00:33:00,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:00,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:33:00,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:00,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921339517] [2022-11-26 00:33:00,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921339517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:00,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:33:00,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:33:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000779925] [2022-11-26 00:33:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:00,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:33:00,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:33:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:33:00,346 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-26 00:33:00,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:00,497 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2022-11-26 00:33:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:33:00,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-26 00:33:00,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:00,502 INFO L225 Difference]: With dead ends: 61 [2022-11-26 00:33:00,502 INFO L226 Difference]: Without dead ends: 59 [2022-11-26 00:33:00,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:33:00,503 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:00,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 244 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:33:00,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-26 00:33:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-11-26 00:33:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 38 states have internal predecessors, (41), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-26 00:33:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-11-26 00:33:00,553 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 27 [2022-11-26 00:33:00,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:00,555 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-11-26 00:33:00,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-26 00:33:00,555 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-11-26 00:33:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-26 00:33:00,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:00,564 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-26 00:33:00,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:33:00,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:00,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash 739444463, now seen corresponding path program 1 times [2022-11-26 00:33:00,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:00,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264880038] [2022-11-26 00:33:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:33:01,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:01,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264880038] [2022-11-26 00:33:01,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264880038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:33:01,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566116304] [2022-11-26 00:33:01,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:01,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:01,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:01,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:01,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:33:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:01,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-26 00:33:01,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:01,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:01,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:01,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:01,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-26 00:33:01,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:01,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:01,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:01,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-26 00:33:24,291 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:33:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:24,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:33:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:33:25,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566116304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:33:25,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [543152438] [2022-11-26 00:33:25,100 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-26 00:33:25,101 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:33:25,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:33:25,102 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:33:25,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:33:25,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,170 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-26 00:33:25,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 50 [2022-11-26 00:33:25,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,241 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:33:25,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-26 00:33:25,270 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-26 00:33:25,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:33:25,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:33:25,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:33:25,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:25,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:33:26,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:33:26,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:33:26,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:33:26,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:33:26,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:33:26,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:33:26,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:33:26,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:33:26,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:33:26,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:33:26,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:33:26,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:33:26,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:33:26,438 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 130 for LOIs [2022-11-26 00:33:26,530 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 133 for LOIs [2022-11-26 00:33:27,551 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 107 for LOIs [2022-11-26 00:33:27,574 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-26 00:33:27,649 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:33:34,889 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1841#(and (= |#funAddr~s_can_fail_realloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= (select |#length| 3) 12) (= 0 (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32))) (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| Int)) (and (= 16 (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 8) 0) (= (select |#valid| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 1) (= 32 (select |#length| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 24) |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| 4)) (not (= (mod (ite (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| 0) 0 1) 256) 0)) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 0) |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (not (= 2 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|)) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 16) 0) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 8) 0) (< |#StackHeapBarrier| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (not (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12| 0)) (not (= 3 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|)) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 24) 0) (<= 0 |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_12|) 16) 0))) (= |~#s_can_fail_allocator_static~0.base| 4) (= |~#s_can_fail_allocator_static~0.offset| 0) (= 31 (select |#length| 2)) (= |#funAddr~s_can_fail_malloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.offset|) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 32)) 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (= (select |#valid| 4) 1) (= |#funAddr~s_can_fail_calloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 1) 1) (= |#funAddr~s_can_fail_realloc_allocator.base| (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 16))) (= |#funAddr~s_can_fail_calloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 24))) (= (select |#valid| 0) 0) (= (select (select |#memory_$Pointer$.base| |~#s_can_fail_allocator_static~0.base|) (+ |~#s_can_fail_allocator_static~0.offset| 8)) |#funAddr~s_can_fail_free_allocator.base|) (= ~tl_last_error~0 0) (= |#funAddr~s_can_fail_malloc_allocator.offset| (select (select |#memory_$Pointer$.offset| |~#s_can_fail_allocator_static~0.base|) |~#s_can_fail_allocator_static~0.offset|)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= 40 (select |#length| 4)) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:33:34,889 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:33:34,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:33:34,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 8] total 25 [2022-11-26 00:33:34,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666545431] [2022-11-26 00:33:34,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:33:34,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-26 00:33:34,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-26 00:33:34,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1699, Unknown=6, NotChecked=0, Total=1892 [2022-11-26 00:33:34,893 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-26 00:33:55,288 WARN L233 SmtUtils]: Spent 20.06s on a formula simplification. DAG size of input: 39 DAG size of output: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:34:05,416 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:34:15,507 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:34:25,593 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:34:35,755 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:34:46,206 WARN L233 SmtUtils]: Spent 10.03s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:34:46,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:34:46,492 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2022-11-26 00:34:46,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:34:46,493 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 30 [2022-11-26 00:34:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:34:46,494 INFO L225 Difference]: With dead ends: 119 [2022-11-26 00:34:46,495 INFO L226 Difference]: Without dead ends: 69 [2022-11-26 00:34:46,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 100.7s TimeCoverageRelationStatistics Valid=300, Invalid=2450, Unknown=6, NotChecked=0, Total=2756 [2022-11-26 00:34:46,497 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 138 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:34:46,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 300 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:34:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-26 00:34:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2022-11-26 00:34:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 11 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-26 00:34:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-11-26 00:34:46,535 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 30 [2022-11-26 00:34:46,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:34:46,535 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-11-26 00:34:46,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (14), 5 states have call predecessors, (14), 6 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-26 00:34:46,536 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-11-26 00:34:46,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-26 00:34:46,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:46,537 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:34:46,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:34:46,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:46,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:34:46,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1842443058, now seen corresponding path program 1 times [2022-11-26 00:34:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:34:46,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821709109] [2022-11-26 00:34:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:34:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:34:47,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:34:47,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821709109] [2022-11-26 00:34:47,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821709109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:34:47,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400368413] [2022-11-26 00:34:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:47,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:47,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:34:47,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:34:47,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:34:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:47,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-26 00:34:47,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:34:48,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:35:01,520 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:35:11,740 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:35:12,200 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:35:12,201 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 26 treesize of output 29 [2022-11-26 00:35:12,216 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:35:12,216 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 24 treesize of output 27 [2022-11-26 00:35:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:35:12,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400368413] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:35:12,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [422648847] [2022-11-26 00:35:12,308 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2022-11-26 00:35:12,309 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:35:12,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:35:12,309 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:35:12,310 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:35:12,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,382 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:35:12,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-26 00:35:12,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-26 00:35:12,421 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-26 00:35:12,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:35:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:35:12,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:35:12,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:12,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:35:13,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:35:13,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:35:13,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:35:13,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:35:13,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:35:13,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:35:13,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:35:13,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:35:13,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:35:13,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:35:13,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:35:13,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:35:13,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:35:13,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:35:13,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:35:13,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:35:13,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:35:13,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:35:13,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:35:13,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:13,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:35:14,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:35:14,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:35:14,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:35:14,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:35:14,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:35:14,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:35:14,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:35:14,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:35:14,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:35:14,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:35:14,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:35:14,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:35:14,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:35:14,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:35:14,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:35:14,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:14,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:35:14,546 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 133 for LOIs [2022-11-26 00:35:14,724 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 194 for LOIs [2022-11-26 00:35:15,119 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 128 for LOIs [2022-11-26 00:35:16,061 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 162 for LOIs [2022-11-26 00:35:16,145 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-26 00:35:16,231 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:35:31,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [422648847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:35:31,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:35:31,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [16, 22, 18] total 65 [2022-11-26 00:35:31,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537653348] [2022-11-26 00:35:31,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:35:31,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-26 00:35:31,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-26 00:35:31,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=3863, Unknown=1, NotChecked=0, Total=4160 [2022-11-26 00:35:31,015 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 16 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-26 00:35:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:37,353 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2022-11-26 00:35:37,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-26 00:35:37,354 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 16 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 40 [2022-11-26 00:35:37,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:37,355 INFO L225 Difference]: With dead ends: 88 [2022-11-26 00:35:37,355 INFO L226 Difference]: Without dead ends: 70 [2022-11-26 00:35:37,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 62 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=404, Invalid=4565, Unknown=1, NotChecked=0, Total=4970 [2022-11-26 00:35:37,358 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:37,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 117 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 00:35:37,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-26 00:35:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-11-26 00:35:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 10 states have call predecessors, (12), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-26 00:35:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2022-11-26 00:35:37,404 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 40 [2022-11-26 00:35:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:37,405 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2022-11-26 00:35:37,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 16 states have internal predecessors, (23), 7 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-26 00:35:37,405 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2022-11-26 00:35:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-26 00:35:37,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:37,406 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2022-11-26 00:35:37,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:35:37,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:35:37,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:35:37,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:37,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1511104578, now seen corresponding path program 1 times [2022-11-26 00:35:37,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:37,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674728251] [2022-11-26 00:35:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:37,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:35:40,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:40,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674728251] [2022-11-26 00:35:40,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674728251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:35:40,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546634416] [2022-11-26 00:35:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:40,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:35:40,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:35:40,042 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:35:40,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:35:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:40,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-26 00:35:40,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:35:40,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:40,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:40,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:40,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-26 00:35:40,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:40,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:40,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:35:40,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-26 00:35:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:35:53,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:36:00,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:36:00,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37542 treesize of output 36734 [2022-11-26 00:36:02,024 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:36:02,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21371 treesize of output 21301 [2022-11-26 00:38:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:38:58,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546634416] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:38:58,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1308718797] [2022-11-26 00:38:58,873 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2022-11-26 00:38:58,873 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:38:58,874 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:38:58,874 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:38:58,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:38:58,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:58,936 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:38:58,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-26 00:38:58,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:58,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-11-26 00:38:59,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:38:59,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:38:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-26 00:38:59,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-11-26 00:38:59,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-26 00:38:59,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-26 00:38:59,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-26 00:38:59,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2022-11-26 00:38:59,767 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_init with input of size 113 for LOIs [2022-11-26 00:38:59,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:38:59,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:39:00,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:39:00,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:39:00,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:39:00,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:39:00,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:39:00,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:39:00,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:39:00,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:39:00,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:39:00,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:00,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:00,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:39:00,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:39:00,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:00,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:00,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:39:00,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:39:00,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:39:00,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:39:00,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:00,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:39:00,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:00,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:00,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:39:01,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:39:01,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:39:01,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:01,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:01,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:39:01,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:39:01,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:01,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:01,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:39:01,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:39:01,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:01,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:01,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:39:01,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:39:01,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:39:01,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:39:01,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-26 00:39:01,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 42 [2022-11-26 00:39:01,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:01,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 87 [2022-11-26 00:39:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 93 [2022-11-26 00:39:01,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-26 00:39:01,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 20 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 95 [2022-11-26 00:39:01,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:01,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-26 00:39:01,970 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_empty with input of size 133 for LOIs [2022-11-26 00:39:02,132 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 162 for LOIs [2022-11-26 00:39:02,200 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 158 for LOIs [2022-11-26 00:39:03,709 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 15 for LOIs [2022-11-26 00:39:03,715 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2022-11-26 00:39:03,779 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:39:21,040 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2998#(and (= |~#s_can_fail_allocator_static~0.base| 4) (= (mod __VERIFIER_assert_~cond 256) 0) (= |~#s_can_fail_allocator_static~0.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= ~tl_last_error~0 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:39:21,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:39:21,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:39:21,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 13] total 40 [2022-11-26 00:39:21,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370018635] [2022-11-26 00:39:21,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:39:21,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-26 00:39:21,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:21,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-26 00:39:21,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=4191, Unknown=0, NotChecked=0, Total=4556 [2022-11-26 00:39:21,044 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 40 states, 32 states have (on average 2.1875) internal successors, (70), 35 states have internal predecessors, (70), 20 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 15 states have call predecessors, (25), 19 states have call successors, (25) [2022-11-26 00:39:23,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:39:27,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:39:27,915 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-11-26 00:39:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-26 00:39:27,916 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 2.1875) internal successors, (70), 35 states have internal predecessors, (70), 20 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 15 states have call predecessors, (25), 19 states have call successors, (25) Word has length 52 [2022-11-26 00:39:27,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:39:27,917 INFO L225 Difference]: With dead ends: 91 [2022-11-26 00:39:27,917 INFO L226 Difference]: Without dead ends: 84 [2022-11-26 00:39:27,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 90 SyntacticMatches, 15 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2994 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=635, Invalid=6675, Unknown=0, NotChecked=0, Total=7310 [2022-11-26 00:39:27,921 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 214 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 80 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:39:27,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 329 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 794 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-26 00:39:27,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-26 00:39:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2022-11-26 00:39:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-26 00:39:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2022-11-26 00:39:27,991 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 52 [2022-11-26 00:39:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:39:27,991 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2022-11-26 00:39:27,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 2.1875) internal successors, (70), 35 states have internal predecessors, (70), 20 states have call successors, (26), 6 states have call predecessors, (26), 11 states have return successors, (25), 15 states have call predecessors, (25), 19 states have call successors, (25) [2022-11-26 00:39:27,992 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2022-11-26 00:39:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-26 00:39:27,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:39:27,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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] [2022-11-26 00:39:28,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:39:28,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 00:39:28,195 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:39:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:39:28,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2062891035, now seen corresponding path program 1 times [2022-11-26 00:39:28,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:39:28,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197751435] [2022-11-26 00:39:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:28,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:39:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:39:31,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:39:31,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197751435] [2022-11-26 00:39:31,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197751435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:39:31,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438656606] [2022-11-26 00:39:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:39:31,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:39:31,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:39:31,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:39:31,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c48d6-8cd9-4f35-84d7-da20798a4dde/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:39:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:39:32,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-26 00:39:32,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:39:32,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:32,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:32,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:32,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-26 00:39:32,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:32,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:32,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:32,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-26 00:39:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:39:48,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:39:59,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10434 treesize of output 10402 [2022-11-26 00:40:00,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:00,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20863618 treesize of output 20699570