./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 588c504bc2fd23c9ce280a0a1b43a680048f163183a3674ad6d00cde5eb05799 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:05:14,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:05:14,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:05:14,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:05:14,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:05:14,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:05:14,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:05:14,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:05:14,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:05:14,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:05:14,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:05:14,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:05:14,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:05:14,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:05:14,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:05:14,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:05:14,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:05:14,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:05:14,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:05:14,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:05:14,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:05:14,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:05:14,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:05:14,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:05:14,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:05:14,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:05:14,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:05:14,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:05:14,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:05:14,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:05:14,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:05:14,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:05:14,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:05:14,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:05:14,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:05:14,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:05:14,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:05:14,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:05:14,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:05:14,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:05:14,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:05:14,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:05:14,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:05:14,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:05:14,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:05:14,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:05:14,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:05:14,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:05:14,367 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:05:14,367 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:05:14,368 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:05:14,368 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:05:14,368 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:05:14,368 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:05:14,369 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:05:14,369 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:05:14,369 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:05:14,370 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:05:14,370 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:05:14,370 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:05:14,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:05:14,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:05:14,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:05:14,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:05:14,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:05:14,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:05:14,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:05:14,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:05:14,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:05:14,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:05:14,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:05:14,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:05:14,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:05:14,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:05:14,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:05:14,373 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:05:14,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:05:14,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:05:14,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:05:14,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:05:14,374 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c504bc2fd23c9ce280a0a1b43a680048f163183a3674ad6d00cde5eb05799 [2021-11-25 18:05:14,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:05:14,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:05:14,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:05:14,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:05:14,689 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:05:14,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i [2021-11-25 18:05:14,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/data/fadfb3de9/655b628622b246db84dc4ef375ee9256/FLAGa4c8a5f3c [2021-11-25 18:05:15,526 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:05:15,527 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i [2021-11-25 18:05:15,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/data/fadfb3de9/655b628622b246db84dc4ef375ee9256/FLAGa4c8a5f3c [2021-11-25 18:05:15,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/data/fadfb3de9/655b628622b246db84dc4ef375ee9256 [2021-11-25 18:05:15,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:05:15,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:05:15,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:05:15,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:05:15,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:05:15,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:05:15" (1/1) ... [2021-11-25 18:05:15,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7432d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:15, skipping insertion in model container [2021-11-25 18:05:15,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:05:15" (1/1) ... [2021-11-25 18:05:15,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:05:15,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:05:16,023 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4496,4509] [2021-11-25 18:05:16,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4556,4569] [2021-11-25 18:05:16,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,888 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,902 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,903 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,905 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,905 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,907 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,908 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,909 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:16,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,301 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:05:17,303 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:05:17,304 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:05:17,305 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:05:17,306 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:05:17,307 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:05:17,308 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:05:17,308 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:05:17,309 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:05:17,309 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:05:17,500 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:05:17,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:05:17,569 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:05:17,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4496,4509] [2021-11-25 18:05:17,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/sv-benchmarks/c/aws-c-common/aws_linked_list_remove_harness.i[4556,4569] [2021-11-25 18:05:17,669 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,671 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,684 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,685 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,689 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,689 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:05:17,801 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:05:17,816 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:05:17,817 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:05:17,818 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:05:17,818 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:05:17,819 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:05:17,819 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:05:17,820 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:05:17,820 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:05:17,821 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:05:17,855 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:05:17,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:05:18,170 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:05:18,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18 WrapperNode [2021-11-25 18:05:18,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:05:18,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:05:18,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:05:18,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:05:18,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (1/1) ... [2021-11-25 18:05:18,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (1/1) ... [2021-11-25 18:05:18,323 INFO L137 Inliner]: procedures = 679, calls = 1048, calls flagged for inlining = 49, calls inlined = 4, statements flattened = 89 [2021-11-25 18:05:18,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:05:18,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:05:18,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:05:18,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:05:18,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (1/1) ... [2021-11-25 18:05:18,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (1/1) ... [2021-11-25 18:05:18,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (1/1) ... [2021-11-25 18:05:18,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (1/1) ... [2021-11-25 18:05:18,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (1/1) ... [2021-11-25 18:05:18,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (1/1) ... [2021-11-25 18:05:18,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (1/1) ... [2021-11-25 18:05:18,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:05:18,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:05:18,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:05:18,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:05:18,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (1/1) ... [2021-11-25 18:05:18,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:05:18,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:05:18,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:05:18,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:05:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-25 18:05:18,533 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-25 18:05:18,533 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2021-11-25 18:05:18,534 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2021-11-25 18:05:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:05:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:05:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:05:18,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:05:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-25 18:05:18,535 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-25 18:05:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:05:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:05:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:05:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:05:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:05:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:05:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:05:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:05:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:05:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:05:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:05:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-11-25 18:05:18,538 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-11-25 18:05:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:05:18,777 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:05:18,779 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:05:19,115 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:05:19,239 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:05:19,242 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:05:19,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:05:19 BoogieIcfgContainer [2021-11-25 18:05:19,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:05:19,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:05:19,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:05:19,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:05:19,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:05:15" (1/3) ... [2021-11-25 18:05:19,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cfc75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:05:19, skipping insertion in model container [2021-11-25 18:05:19,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:18" (2/3) ... [2021-11-25 18:05:19,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77cfc75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:05:19, skipping insertion in model container [2021-11-25 18:05:19,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:05:19" (3/3) ... [2021-11-25 18:05:19,256 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_remove_harness.i [2021-11-25 18:05:19,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:05:19,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:05:19,307 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:05:19,314 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:05:19,314 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:05:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-25 18:05:19,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 18:05:19,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:19,337 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:19,338 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:19,343 INFO L85 PathProgramCache]: Analyzing trace with hash -113877497, now seen corresponding path program 1 times [2021-11-25 18:05:19,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:19,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078981984] [2021-11-25 18:05:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:19,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:19,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:19,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078981984] [2021-11-25 18:05:19,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078981984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:19,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:19,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:05:19,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918494280] [2021-11-25 18:05:19,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:19,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:05:19,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:19,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:05:19,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:05:19,885 INFO L87 Difference]: Start difference. First operand has 52 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:05:19,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:19,973 INFO L93 Difference]: Finished difference Result 92 states and 125 transitions. [2021-11-25 18:05:19,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:05:19,977 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2021-11-25 18:05:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:19,986 INFO L225 Difference]: With dead ends: 92 [2021-11-25 18:05:19,986 INFO L226 Difference]: Without dead ends: 50 [2021-11-25 18:05:19,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:05:19,996 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:19,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:05:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-25 18:05:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-25 18:05:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 17 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-25 18:05:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2021-11-25 18:05:20,045 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 30 [2021-11-25 18:05:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:20,046 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2021-11-25 18:05:20,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:05:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2021-11-25 18:05:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 18:05:20,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:20,049 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:20,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:05:20,050 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1025841595, now seen corresponding path program 1 times [2021-11-25 18:05:20,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:20,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980839416] [2021-11-25 18:05:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:20,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:20,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:20,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980839416] [2021-11-25 18:05:20,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980839416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:20,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:20,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:05:20,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032199513] [2021-11-25 18:05:20,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:20,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:05:20,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:05:20,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:05:20,358 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-25 18:05:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:20,515 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2021-11-25 18:05:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:05:20,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 35 [2021-11-25 18:05:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:20,523 INFO L225 Difference]: With dead ends: 60 [2021-11-25 18:05:20,523 INFO L226 Difference]: Without dead ends: 58 [2021-11-25 18:05:20,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:05:20,525 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:20,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 246 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:05:20,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-25 18:05:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-11-25 18:05:20,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 31 states have internal predecessors, (33), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:05:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-11-25 18:05:20,556 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 35 [2021-11-25 18:05:20,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:20,557 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-11-25 18:05:20,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-25 18:05:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-11-25 18:05:20,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 18:05:20,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:20,561 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:20,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:05:20,561 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:20,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash -668758344, now seen corresponding path program 1 times [2021-11-25 18:05:20,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:20,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23597823] [2021-11-25 18:05:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:20,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:21,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:21,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23597823] [2021-11-25 18:05:21,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23597823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:21,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:21,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:05:21,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616622075] [2021-11-25 18:05:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:21,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:05:21,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:05:21,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:05:21,035 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 18:05:21,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:21,123 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2021-11-25 18:05:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:05:21,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 36 [2021-11-25 18:05:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:21,126 INFO L225 Difference]: With dead ends: 100 [2021-11-25 18:05:21,126 INFO L226 Difference]: Without dead ends: 58 [2021-11-25 18:05:21,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:05:21,128 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 1 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:21,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 154 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:05:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-25 18:05:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-25 18:05:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:05:21,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2021-11-25 18:05:21,138 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 36 [2021-11-25 18:05:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:21,139 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2021-11-25 18:05:21,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 18:05:21,139 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2021-11-25 18:05:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 18:05:21,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:21,141 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:05:21,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:05:21,142 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:21,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1257838343, now seen corresponding path program 1 times [2021-11-25 18:05:21,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:21,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372857880] [2021-11-25 18:05:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:21,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:21,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:21,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372857880] [2021-11-25 18:05:21,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372857880] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:05:21,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134080010] [2021-11-25 18:05:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:21,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:05:21,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:05:21,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:05:21,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:05:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:21,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 18:05:21,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:05:21,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:05:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:22,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:05:22,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-11-25 18:05:22,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-11-25 18:05:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:22,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134080010] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:05:22,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [541589642] [2021-11-25 18:05:22,764 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:05:22,764 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:05:22,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:05:22,773 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:05:22,774 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:05:22,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:22,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:22,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,089 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-25 18:05:23,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-25 18:05:23,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 29 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 91 [2021-11-25 18:05:23,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 22 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 37 [2021-11-25 18:05:23,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-25 18:05:23,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 29 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 91 [2021-11-25 18:05:23,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 19 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 26 [2021-11-25 18:05:23,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:23,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 31 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 56 [2021-11-25 18:05:23,423 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 181 for LOIs [2021-11-25 18:05:24,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:24,802 INFO L354 Elim1Store]: treesize reduction 327, result has 24.8 percent of original size [2021-11-25 18:05:24,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 470 [2021-11-25 18:05:24,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:25,034 INFO L354 Elim1Store]: treesize reduction 387, result has 27.1 percent of original size [2021-11-25 18:05:25,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 637 treesize of output 528 [2021-11-25 18:05:25,115 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:05:25,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:05:25,189 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:05:25,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:05:25,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:25,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:25,286 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:05:25,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 497 treesize of output 301 [2021-11-25 18:05:25,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:25,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:25,363 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:05:25,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 470 treesize of output 297 [2021-11-25 18:05:25,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:25,453 INFO L354 Elim1Store]: treesize reduction 88, result has 3.3 percent of original size [2021-11-25 18:05:25,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 497 treesize of output 307 [2021-11-25 18:05:25,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:25,517 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:05:25,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 470 treesize of output 297 [2021-11-25 18:05:25,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:25,608 INFO L354 Elim1Store]: treesize reduction 47, result has 20.3 percent of original size [2021-11-25 18:05:25,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 470 treesize of output 309 [2021-11-25 18:05:25,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:25,672 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:05:25,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 493 treesize of output 300 [2021-11-25 18:05:25,788 INFO L354 Elim1Store]: treesize reduction 8, result has 84.9 percent of original size [2021-11-25 18:05:25,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 125 [2021-11-25 18:05:25,831 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-25 18:05:25,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 171 treesize of output 82 [2021-11-25 18:05:25,854 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:05:25,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 179 treesize of output 90 [2021-11-25 18:05:26,266 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:26,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:26,435 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-25 18:05:26,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 597 treesize of output 424 [2021-11-25 18:05:26,448 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-25 18:05:26,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 505 treesize of output 350 [2021-11-25 18:05:26,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:26,487 INFO L354 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2021-11-25 18:05:26,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1830 treesize of output 1269 [2021-11-25 18:05:26,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:26,512 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-25 18:05:26,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1237 treesize of output 738 [2021-11-25 18:05:26,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:26,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:26,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:26,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:05:26,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:26,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:26,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2021-11-25 18:05:26,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:26,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2021-11-25 18:05:26,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:26,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 69 [2021-11-25 18:05:26,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:05:26,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:26,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:26,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:27,293 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 47 for LOIs [2021-11-25 18:05:27,342 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2021-11-25 18:05:27,346 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 40 for LOIs [2021-11-25 18:05:27,370 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 172 for LOIs [2021-11-25 18:05:27,602 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 54 for LOIs [2021-11-25 18:05:27,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:27,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:27,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:05:27,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:27,797 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 18 for LOIs [2021-11-25 18:05:27,944 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:05:31,173 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '924#(and (<= 0 |#NULL.base|) (exists ((|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_10| Int) (|v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.offset_BEFORE_CALL_10| Int)) (and (not (= (mod (select (select |#memory_int| |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_10|) |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.offset_BEFORE_CALL_10|) 256) 0)) (not (= (mod (ite (= (ite (or (not (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.base_BEFORE_CALL_10| 0)) (not (= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.offset_BEFORE_CALL_10| 0))) 1 0) 0) 0 1) 256) 0)) (<= 0 |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.offset_BEFORE_CALL_10|) (<= |v_aws_linked_list_remove_aws_linked_list_node_reset_~node#1.offset_BEFORE_CALL_10| 0))) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2021-11-25 18:05:31,174 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:05:31,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:05:31,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 8] total 17 [2021-11-25 18:05:31,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188052631] [2021-11-25 18:05:31,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:05:31,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 18:05:31,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:31,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 18:05:31,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1728, Unknown=0, NotChecked=0, Total=1892 [2021-11-25 18:05:31,177 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 4 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 18:05:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:31,467 INFO L93 Difference]: Finished difference Result 105 states and 127 transitions. [2021-11-25 18:05:31,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:05:31,468 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 4 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 37 [2021-11-25 18:05:31,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:31,470 INFO L225 Difference]: With dead ends: 105 [2021-11-25 18:05:31,470 INFO L226 Difference]: Without dead ends: 61 [2021-11-25 18:05:31,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=176, Invalid=1894, Unknown=0, NotChecked=0, Total=2070 [2021-11-25 18:05:31,474 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 9 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:31,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 557 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 152 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2021-11-25 18:05:31,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-25 18:05:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-25 18:05:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:05:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2021-11-25 18:05:31,486 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 37 [2021-11-25 18:05:31,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:31,487 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2021-11-25 18:05:31,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 4 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 18:05:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2021-11-25 18:05:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 18:05:31,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:31,490 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-25 18:05:31,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:05:31,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:05:31,704 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:31,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:31,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1164062601, now seen corresponding path program 1 times [2021-11-25 18:05:31,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:31,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380138074] [2021-11-25 18:05:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:31,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 18:05:31,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:31,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380138074] [2021-11-25 18:05:31,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380138074] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:05:31,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173804269] [2021-11-25 18:05:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:31,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:05:31,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:05:31,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:05:31,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:05:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:32,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-25 18:05:32,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:05:32,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:05:32,357 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:05:32,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 18:05:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:32,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:05:33,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-11-25 18:05:33,870 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 18:05:33,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 147 treesize of output 141 [2021-11-25 18:05:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:33,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173804269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:05:33,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [227330821] [2021-11-25 18:05:33,987 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:05:33,987 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:05:33,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:05:33,988 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:05:33,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:05:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:34,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:34,083 INFO L354 Elim1Store]: treesize reduction 92, result has 33.8 percent of original size [2021-11-25 18:05:34,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 105 [2021-11-25 18:05:34,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:34,151 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-25 18:05:34,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 41 [2021-11-25 18:05:34,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-25 18:05:34,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,314 INFO L354 Elim1Store]: treesize reduction 200, result has 26.2 percent of original size [2021-11-25 18:05:34,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 96 [2021-11-25 18:05:34,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,545 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-25 18:05:34,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-25 18:05:34,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 29 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 91 [2021-11-25 18:05:34,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:34,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 19 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 26 [2021-11-25 18:05:34,646 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:05:34,652 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:05:34,669 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:05:34,674 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 37 for LOIs [2021-11-25 18:05:35,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:35,383 INFO L354 Elim1Store]: treesize reduction 327, result has 24.8 percent of original size [2021-11-25 18:05:35,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 470 [2021-11-25 18:05:35,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:35,577 INFO L354 Elim1Store]: treesize reduction 387, result has 27.1 percent of original size [2021-11-25 18:05:35,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 637 treesize of output 528 [2021-11-25 18:05:35,665 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:05:35,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:05:35,731 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:05:35,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:05:35,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:35,810 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-25 18:05:35,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 330 treesize of output 182 [2021-11-25 18:05:35,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:35,858 INFO L354 Elim1Store]: treesize reduction 84, result has 7.7 percent of original size [2021-11-25 18:05:35,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 348 treesize of output 203 [2021-11-25 18:05:35,903 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:35,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:35,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:35,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:35,957 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-25 18:05:35,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 330 treesize of output 179 [2021-11-25 18:05:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:35,996 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:05:35,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 348 treesize of output 197 [2021-11-25 18:05:36,360 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:36,383 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:36,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:36,437 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:36,472 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:36,495 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:36,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:36,762 INFO L354 Elim1Store]: treesize reduction 88, result has 3.3 percent of original size [2021-11-25 18:05:36,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 401 treesize of output 253 [2021-11-25 18:05:36,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:36,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:36,803 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-25 18:05:36,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 383 treesize of output 232 [2021-11-25 18:05:37,051 INFO L354 Elim1Store]: treesize reduction 95, result has 15.9 percent of original size [2021-11-25 18:05:37,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 486 treesize of output 292 [2021-11-25 18:05:37,189 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:05:37,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 213 treesize of output 110 [2021-11-25 18:05:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:37,411 INFO L354 Elim1Store]: treesize reduction 67, result has 19.3 percent of original size [2021-11-25 18:05:37,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1568 treesize of output 1123 [2021-11-25 18:05:37,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:37,452 INFO L354 Elim1Store]: treesize reduction 51, result has 21.5 percent of original size [2021-11-25 18:05:37,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1091 treesize of output 744 [2021-11-25 18:05:37,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:37,689 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-25 18:05:37,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 1402 treesize of output 993 [2021-11-25 18:05:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:37,731 INFO L354 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2021-11-25 18:05:37,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 946 treesize of output 628 [2021-11-25 18:05:37,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:37,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:37,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:37,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:05:38,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:38,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:38,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2021-11-25 18:05:38,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:38,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 69 [2021-11-25 18:05:38,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:38,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2021-11-25 18:05:38,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:38,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:38,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:05:38,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:38,499 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 67 for LOIs [2021-11-25 18:05:38,565 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 43 for LOIs [2021-11-25 18:05:38,582 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 41 for LOIs [2021-11-25 18:05:38,685 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 25 for LOIs [2021-11-25 18:05:38,789 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 55 for LOIs [2021-11-25 18:05:38,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:05:38,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:38,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:38,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:38,983 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 25 for LOIs [2021-11-25 18:05:39,097 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:05:42,467 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1462#(and (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (exists ((v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_4 Int) (aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4_67 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_4 Int)) (and (not (= (mod (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_4) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_4 (ite (<= (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4_67 18446744073709551616) 9223372036854775807) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4_67 18446744073709551616) (+ (- 18446744073709551616) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4_67 18446744073709551616))))) 256) 0)) (<= 0 aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4_67) (< aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_4_67 18446744073709551615))) (= |__VERIFIER_assert_#in~cond| 0) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2021-11-25 18:05:42,467 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:05:42,467 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:05:42,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16, 11] total 28 [2021-11-25 18:05:42,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140798482] [2021-11-25 18:05:42,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:05:42,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-25 18:05:42,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-25 18:05:42,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2772, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 18:05:42,471 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 28 states, 25 states have (on average 1.92) internal successors, (48), 26 states have internal predecessors, (48), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-25 18:05:43,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:43,178 INFO L93 Difference]: Finished difference Result 110 states and 134 transitions. [2021-11-25 18:05:43,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 18:05:43,178 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.92) internal successors, (48), 26 states have internal predecessors, (48), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 40 [2021-11-25 18:05:43,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:43,180 INFO L225 Difference]: With dead ends: 110 [2021-11-25 18:05:43,180 INFO L226 Difference]: Without dead ends: 64 [2021-11-25 18:05:43,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=255, Invalid=3405, Unknown=0, NotChecked=0, Total=3660 [2021-11-25 18:05:43,183 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 29 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:43,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 645 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 239 Invalid, 0 Unknown, 32 Unchecked, 0.5s Time] [2021-11-25 18:05:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-25 18:05:43,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-25 18:05:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:05:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2021-11-25 18:05:43,192 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 40 [2021-11-25 18:05:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:43,193 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2021-11-25 18:05:43,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.92) internal successors, (48), 26 states have internal predecessors, (48), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-25 18:05:43,193 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2021-11-25 18:05:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:05:43,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:43,195 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-25 18:05:43,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:05:43,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:05:43,427 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:43,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1248539787, now seen corresponding path program 1 times [2021-11-25 18:05:43,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:43,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119039378] [2021-11-25 18:05:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:43,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:43,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:43,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119039378] [2021-11-25 18:05:43,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119039378] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:05:43,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122826712] [2021-11-25 18:05:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:43,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:05:43,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:05:43,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:05:43,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:05:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:44,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:05:44,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:05:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 18:05:44,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:05:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 18:05:44,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122826712] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 18:05:44,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 18:05:44,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 12 [2021-11-25 18:05:44,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077602865] [2021-11-25 18:05:44,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:44,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:05:44,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:05:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:05:44,295 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 18:05:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:44,354 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2021-11-25 18:05:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:05:44,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 44 [2021-11-25 18:05:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:44,356 INFO L225 Difference]: With dead ends: 96 [2021-11-25 18:05:44,356 INFO L226 Difference]: Without dead ends: 64 [2021-11-25 18:05:44,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:05:44,357 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 5 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:44,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 103 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:05:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-25 18:05:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-25 18:05:44,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 38 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:05:44,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2021-11-25 18:05:44,365 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 44 [2021-11-25 18:05:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:44,365 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2021-11-25 18:05:44,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 18:05:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2021-11-25 18:05:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-25 18:05:44,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:44,367 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-25 18:05:44,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-25 18:05:44,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 18:05:44,587 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:05:44,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:44,587 INFO L85 PathProgramCache]: Analyzing trace with hash -863920311, now seen corresponding path program 2 times [2021-11-25 18:05:44,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:44,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563744765] [2021-11-25 18:05:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:44,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 18:05:44,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:44,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563744765] [2021-11-25 18:05:44,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563744765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:05:44,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598055353] [2021-11-25 18:05:44,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:05:44,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:05:44,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:05:44,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:05:44,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:05:45,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 18:05:45,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:05:45,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-25 18:05:45,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:05:45,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:45,890 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:05:45,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 18:05:45,934 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-25 18:05:45,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-11-25 18:05:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:46,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:05:47,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2021-11-25 18:05:47,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 178 [2021-11-25 18:05:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:05:47,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598055353] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:05:47,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1905085580] [2021-11-25 18:05:47,458 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:05:47,458 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:05:47,459 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:05:47,459 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:05:47,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:05:47,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,737 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-25 18:05:47,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-25 18:05:47,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-25 18:05:47,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2021-11-25 18:05:47,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 29 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 91 [2021-11-25 18:05:47,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-25 18:05:47,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2021-11-25 18:05:47,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 31 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 56 [2021-11-25 18:05:47,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:47,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 29 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 91 [2021-11-25 18:05:47,967 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 181 for LOIs [2021-11-25 18:05:48,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:48,915 INFO L354 Elim1Store]: treesize reduction 327, result has 24.8 percent of original size [2021-11-25 18:05:48,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 470 [2021-11-25 18:05:48,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:49,132 INFO L354 Elim1Store]: treesize reduction 387, result has 27.1 percent of original size [2021-11-25 18:05:49,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 637 treesize of output 528 [2021-11-25 18:05:49,202 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:05:49,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:05:49,256 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:05:49,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:05:49,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:49,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:49,326 INFO L354 Elim1Store]: treesize reduction 20, result has 13.0 percent of original size [2021-11-25 18:05:49,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 457 treesize of output 254 [2021-11-25 18:05:49,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:49,431 INFO L354 Elim1Store]: treesize reduction 98, result has 3.0 percent of original size [2021-11-25 18:05:49,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 480 treesize of output 290 [2021-11-25 18:05:49,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:49,504 INFO L354 Elim1Store]: treesize reduction 83, result has 17.8 percent of original size [2021-11-25 18:05:49,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 457 treesize of output 295 [2021-11-25 18:05:49,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:49,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:49,585 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-25 18:05:49,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 457 treesize of output 251 [2021-11-25 18:05:49,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:49,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:49,660 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-25 18:05:49,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 480 treesize of output 260 [2021-11-25 18:05:49,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:49,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:49,711 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-25 18:05:49,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 457 treesize of output 251 [2021-11-25 18:05:49,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:49,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:49,787 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-25 18:05:49,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 457 treesize of output 251 [2021-11-25 18:05:49,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:49,836 INFO L354 Elim1Store]: treesize reduction 98, result has 3.0 percent of original size [2021-11-25 18:05:49,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 480 treesize of output 290 [2021-11-25 18:05:49,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:49,891 INFO L354 Elim1Store]: treesize reduction 98, result has 3.0 percent of original size [2021-11-25 18:05:49,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 457 treesize of output 281 [2021-11-25 18:05:50,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:50,035 INFO L354 Elim1Store]: treesize reduction 35, result has 25.5 percent of original size [2021-11-25 18:05:50,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 341 treesize of output 194 [2021-11-25 18:05:50,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:50,145 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:05:50,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 49 [2021-11-25 18:05:50,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:50,164 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:05:50,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 49 [2021-11-25 18:05:50,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:50,214 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-25 18:05:50,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 56 [2021-11-25 18:05:50,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:50,293 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-25 18:05:50,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 56 [2021-11-25 18:05:50,312 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:50,550 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:50,674 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:05:50,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:50,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:50,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:50,857 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:05:50,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 761 treesize of output 544 [2021-11-25 18:05:50,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:50,913 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2021-11-25 18:05:50,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 411 treesize of output 266 [2021-11-25 18:05:50,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:50,973 INFO L354 Elim1Store]: treesize reduction 70, result has 15.7 percent of original size [2021-11-25 18:05:50,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 805 treesize of output 593 [2021-11-25 18:05:50,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:50,994 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-25 18:05:50,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 561 treesize of output 380 [2021-11-25 18:05:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:51,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:05:51,077 INFO L354 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2021-11-25 18:05:51,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 760 treesize of output 542 [2021-11-25 18:05:51,096 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:05:51,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 479 treesize of output 324 [2021-11-25 18:05:51,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:51,132 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-25 18:05:51,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 1426 treesize of output 1017 [2021-11-25 18:05:51,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:05:51,177 INFO L354 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2021-11-25 18:05:51,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 959 treesize of output 637 [2021-11-25 18:05:51,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:05:51,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:05:51,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:05:51,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:05:51,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:51,473 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:05:51,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 60 [2021-11-25 18:05:51,496 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:05:51,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2021-11-25 18:05:51,521 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:05:51,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2021-11-25 18:05:51,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:51,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:51,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:51,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:05:51,927 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 67 for LOIs [2021-11-25 18:05:52,007 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2021-11-25 18:05:52,011 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 40 for LOIs [2021-11-25 18:05:52,102 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 172 for LOIs [2021-11-25 18:05:52,267 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 54 for LOIs [2021-11-25 18:05:52,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:52,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:05:52,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:52,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:05:52,412 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 18 for LOIs [2021-11-25 18:05:52,481 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:06:00,032 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2548#(and (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (exists ((v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_5 Int) (aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5_67 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_5 Int)) (and (not (= (mod (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_5) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_5 (ite (<= (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5_67 18446744073709551616) 9223372036854775807) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5_67 18446744073709551616) (+ (- 18446744073709551616) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5_67 18446744073709551616))))) 256) 0)) (<= 0 aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5_67) (< aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_5_67 18446744073709551615))) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2021-11-25 18:06:00,032 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:06:00,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:06:00,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 12] total 27 [2021-11-25 18:06:00,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366591761] [2021-11-25 18:06:00,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:06:00,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 18:06:00,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:00,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 18:06:00,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2657, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 18:06:00,035 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 27 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 26 states have internal predecessors, (51), 4 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 18:06:00,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:00,535 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2021-11-25 18:06:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:06:00,536 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 26 states have internal predecessors, (51), 4 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 43 [2021-11-25 18:06:00,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:00,538 INFO L225 Difference]: With dead ends: 115 [2021-11-25 18:06:00,538 INFO L226 Difference]: Without dead ends: 67 [2021-11-25 18:06:00,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=224, Invalid=2856, Unknown=0, NotChecked=0, Total=3080 [2021-11-25 18:06:00,540 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 14 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:00,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 562 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 204 Invalid, 0 Unknown, 38 Unchecked, 0.4s Time] [2021-11-25 18:06:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-25 18:06:00,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-25 18:06:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 41 states have internal predecessors, (45), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:06:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2021-11-25 18:06:00,548 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 43 [2021-11-25 18:06:00,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:00,549 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2021-11-25 18:06:00,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 26 states have internal predecessors, (51), 4 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 18:06:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2021-11-25 18:06:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 18:06:00,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:00,551 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:00,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-25 18:06:00,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 18:06:00,764 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:06:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash -450714509, now seen corresponding path program 1 times [2021-11-25 18:06:00,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:00,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631506133] [2021-11-25 18:06:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:00,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 18:06:01,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:01,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631506133] [2021-11-25 18:06:01,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631506133] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:06:01,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148837116] [2021-11-25 18:06:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:01,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:06:01,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:06:01,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:06:01,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:06:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:01,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 18:06:01,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:06:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 18:06:01,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:06:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 18:06:01,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148837116] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:06:01,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [190694039] [2021-11-25 18:06:01,571 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2021-11-25 18:06:01,571 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:06:01,572 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:06:01,572 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:06:01,572 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:06:01,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,811 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-25 18:06:01,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-25 18:06:01,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 19 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 26 [2021-11-25 18:06:01,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-25 18:06:01,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2021-11-25 18:06:01,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 29 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 91 [2021-11-25 18:06:01,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 29 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 91 [2021-11-25 18:06:01,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:01,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 31 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 56 [2021-11-25 18:06:02,029 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 182 for LOIs [2021-11-25 18:06:02,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:02,916 INFO L354 Elim1Store]: treesize reduction 327, result has 24.8 percent of original size [2021-11-25 18:06:02,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 470 [2021-11-25 18:06:02,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,083 INFO L354 Elim1Store]: treesize reduction 247, result has 27.1 percent of original size [2021-11-25 18:06:03,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 876 treesize of output 503 [2021-11-25 18:06:03,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 1 [2021-11-25 18:06:03,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 1 [2021-11-25 18:06:03,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 1 [2021-11-25 18:06:03,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 1 [2021-11-25 18:06:03,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 96 [2021-11-25 18:06:03,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,244 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:03,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 258 treesize of output 114 [2021-11-25 18:06:03,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,276 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:03,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 225 treesize of output 111 [2021-11-25 18:06:03,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 93 [2021-11-25 18:06:03,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 96 [2021-11-25 18:06:03,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,362 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:03,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 258 treesize of output 114 [2021-11-25 18:06:03,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,395 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:03,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 225 treesize of output 111 [2021-11-25 18:06:03,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 93 [2021-11-25 18:06:03,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 93 [2021-11-25 18:06:03,492 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:03,511 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:03,524 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:03,542 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:03,555 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:03,568 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:03,578 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:03,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 96 [2021-11-25 18:06:03,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,670 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:03,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 258 treesize of output 114 [2021-11-25 18:06:03,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,698 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:03,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 225 treesize of output 111 [2021-11-25 18:06:03,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 93 [2021-11-25 18:06:03,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 96 [2021-11-25 18:06:03,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,771 INFO L354 Elim1Store]: treesize reduction 72, result has 4.0 percent of original size [2021-11-25 18:06:03,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 258 treesize of output 117 [2021-11-25 18:06:03,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,801 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:03,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 225 treesize of output 111 [2021-11-25 18:06:03,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:03,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 93 [2021-11-25 18:06:04,227 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,255 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,273 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,284 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,304 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,316 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,330 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 93 [2021-11-25 18:06:04,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:04,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 111 [2021-11-25 18:06:04,415 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 93 [2021-11-25 18:06:04,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:04,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 111 [2021-11-25 18:06:04,488 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,500 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 93 [2021-11-25 18:06:04,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:04,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 111 [2021-11-25 18:06:04,575 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,587 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 93 [2021-11-25 18:06:04,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:04,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:04,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 111 [2021-11-25 18:06:04,656 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:04,668 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:05,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 273 treesize of output 102 [2021-11-25 18:06:05,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:05,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 120 [2021-11-25 18:06:05,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:05,705 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:05,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 273 treesize of output 102 [2021-11-25 18:06:05,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:05,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 120 [2021-11-25 18:06:05,800 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:05,814 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:05,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,859 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-25 18:06:05,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 273 treesize of output 105 [2021-11-25 18:06:05,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,892 INFO L354 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2021-11-25 18:06:05,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 291 treesize of output 123 [2021-11-25 18:06:05,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 102 [2021-11-25 18:06:05,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,947 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:05,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 258 treesize of output 120 [2021-11-25 18:06:05,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:05,994 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-25 18:06:05,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 273 treesize of output 105 [2021-11-25 18:06:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,027 INFO L354 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2021-11-25 18:06:06,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 291 treesize of output 123 [2021-11-25 18:06:06,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 102 [2021-11-25 18:06:06,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,102 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:06,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 258 treesize of output 120 [2021-11-25 18:06:06,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,168 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:06:06,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 273 treesize of output 105 [2021-11-25 18:06:06,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,212 INFO L354 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2021-11-25 18:06:06,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 291 treesize of output 123 [2021-11-25 18:06:06,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 102 [2021-11-25 18:06:06,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,269 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:06,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 258 treesize of output 120 [2021-11-25 18:06:06,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,334 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:06:06,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 273 treesize of output 105 [2021-11-25 18:06:06,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,375 INFO L354 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2021-11-25 18:06:06,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 291 treesize of output 123 [2021-11-25 18:06:06,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 102 [2021-11-25 18:06:06,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:06,433 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:06,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 258 treesize of output 120 [2021-11-25 18:06:07,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:07,192 INFO L354 Elim1Store]: treesize reduction 97, result has 14.2 percent of original size [2021-11-25 18:06:07,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 3387 treesize of output 1948 [2021-11-25 18:06:07,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:07,310 INFO L354 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2021-11-25 18:06:07,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 2818 treesize of output 1673 [2021-11-25 18:06:07,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:07,704 INFO L354 Elim1Store]: treesize reduction 83, result has 34.6 percent of original size [2021-11-25 18:06:07,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 2253 treesize of output 1138 [2021-11-25 18:06:07,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:07,918 INFO L354 Elim1Store]: treesize reduction 150, result has 0.7 percent of original size [2021-11-25 18:06:07,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 2360 treesize of output 1281 [2021-11-25 18:06:08,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:08,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:08,023 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-25 18:06:08,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 1199 treesize of output 580 [2021-11-25 18:06:08,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:08,291 INFO L354 Elim1Store]: treesize reduction 51, result has 21.5 percent of original size [2021-11-25 18:06:08,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1326 treesize of output 821 [2021-11-25 18:06:08,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:08,503 INFO L354 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2021-11-25 18:06:08,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 903 treesize of output 547 [2021-11-25 18:06:08,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:06:08,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:08,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:08,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:08,710 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:06:08,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 60 [2021-11-25 18:06:08,727 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:06:08,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2021-11-25 18:06:08,744 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:06:08,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2021-11-25 18:06:08,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:08,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:08,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:08,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:06:08,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:09,113 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 20 for LOIs [2021-11-25 18:06:09,124 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2021-11-25 18:06:09,127 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 38 for LOIs [2021-11-25 18:06:09,184 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 173 for LOIs [2021-11-25 18:06:09,380 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 52 for LOIs [2021-11-25 18:06:09,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:06:09,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:09,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:09,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:09,551 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 15 for LOIs [2021-11-25 18:06:09,638 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:06:12,417 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3142#(and (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (= (mod __VERIFIER_assert_~cond 256) 0) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2021-11-25 18:06:12,417 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:06:12,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:06:12,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 16 [2021-11-25 18:06:12,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503912012] [2021-11-25 18:06:12,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:06:12,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 18:06:12,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 18:06:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1581, Unknown=0, NotChecked=0, Total=1722 [2021-11-25 18:06:12,419 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 16 states, 15 states have (on average 3.2) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 18:06:12,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:12,812 INFO L93 Difference]: Finished difference Result 121 states and 146 transitions. [2021-11-25 18:06:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:06:12,812 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 47 [2021-11-25 18:06:12,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:12,813 INFO L225 Difference]: With dead ends: 121 [2021-11-25 18:06:12,813 INFO L226 Difference]: Without dead ends: 69 [2021-11-25 18:06:12,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=197, Invalid=2253, Unknown=0, NotChecked=0, Total=2450 [2021-11-25 18:06:12,815 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 17 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:12,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 480 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:06:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-25 18:06:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-25 18:06:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 43 states have internal predecessors, (45), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:06:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2021-11-25 18:06:12,824 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 47 [2021-11-25 18:06:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:12,824 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2021-11-25 18:06:12,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 18:06:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2021-11-25 18:06:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-25 18:06:12,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:12,826 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:12,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:06:13,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:06:13,032 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:06:13,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1718329318, now seen corresponding path program 3 times [2021-11-25 18:06:13,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:13,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765809224] [2021-11-25 18:06:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:13,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 18:06:13,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:13,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765809224] [2021-11-25 18:06:13,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765809224] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:06:13,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55455989] [2021-11-25 18:06:13,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:06:13,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:06:13,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:06:13,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:06:13,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:06:13,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:06:13,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:06:13,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-25 18:06:13,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:06:13,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:13,766 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-25 18:06:13,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-25 18:06:13,807 INFO L354 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2021-11-25 18:06:13,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-25 18:06:13,866 INFO L354 Elim1Store]: treesize reduction 135, result has 18.7 percent of original size [2021-11-25 18:06:13,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 50 [2021-11-25 18:06:13,941 INFO L354 Elim1Store]: treesize reduction 164, result has 17.6 percent of original size [2021-11-25 18:06:13,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 56 [2021-11-25 18:06:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:06:14,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:06:15,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2021-11-25 18:06:15,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1584 treesize of output 1576 [2021-11-25 18:06:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:06:15,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55455989] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:06:15,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [636475268] [2021-11-25 18:06:15,983 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:06:15,984 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:06:15,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:06:15,984 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:06:15,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:06:16,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:16,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:16,080 INFO L354 Elim1Store]: treesize reduction 92, result has 33.8 percent of original size [2021-11-25 18:06:16,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 105 [2021-11-25 18:06:16,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,257 INFO L354 Elim1Store]: treesize reduction 200, result has 26.2 percent of original size [2021-11-25 18:06:16,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 96 [2021-11-25 18:06:16,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-25 18:06:16,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2021-11-25 18:06:16,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:16,414 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-25 18:06:16,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 34 [2021-11-25 18:06:16,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,647 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-25 18:06:16,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-25 18:06:16,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:16,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 29 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 91 [2021-11-25 18:06:16,684 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:06:16,686 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:06:16,697 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:06:16,700 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 37 for LOIs [2021-11-25 18:06:17,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:17,364 INFO L354 Elim1Store]: treesize reduction 327, result has 24.8 percent of original size [2021-11-25 18:06:17,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 470 [2021-11-25 18:06:17,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:17,578 INFO L354 Elim1Store]: treesize reduction 247, result has 27.1 percent of original size [2021-11-25 18:06:17,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 611 treesize of output 399 [2021-11-25 18:06:17,637 INFO L354 Elim1Store]: treesize reduction 81, result has 40.4 percent of original size [2021-11-25 18:06:17,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 55 [2021-11-25 18:06:17,676 INFO L354 Elim1Store]: treesize reduction 81, result has 40.4 percent of original size [2021-11-25 18:06:17,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 55 [2021-11-25 18:06:17,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:17,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 44 [2021-11-25 18:06:17,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:17,731 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:17,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 61 [2021-11-25 18:06:17,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:17,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:17,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:17,783 INFO L354 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2021-11-25 18:06:17,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 164 treesize of output 49 [2021-11-25 18:06:17,801 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:17,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:17,844 INFO L354 Elim1Store]: treesize reduction 97, result has 14.2 percent of original size [2021-11-25 18:06:17,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 217 treesize of output 104 [2021-11-25 18:06:18,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:18,175 INFO L354 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2021-11-25 18:06:18,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 1 [2021-11-25 18:06:18,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:18,243 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-25 18:06:18,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 1 [2021-11-25 18:06:18,265 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-25 18:06:18,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 129 [2021-11-25 18:06:18,316 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-25 18:06:18,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 87 [2021-11-25 18:06:18,356 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-25 18:06:18,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 186 treesize of output 101 [2021-11-25 18:06:18,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:18,443 INFO L354 Elim1Store]: treesize reduction 59, result has 23.4 percent of original size [2021-11-25 18:06:18,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1452 treesize of output 959 [2021-11-25 18:06:18,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:18,610 INFO L354 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2021-11-25 18:06:18,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 153 [2021-11-25 18:06:18,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:18,626 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-11-25 18:06:18,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 211 treesize of output 141 [2021-11-25 18:06:18,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:18,667 INFO L354 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2021-11-25 18:06:18,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 261 treesize of output 179 [2021-11-25 18:06:18,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:18,693 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-25 18:06:18,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 245 treesize of output 167 [2021-11-25 18:06:18,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:06:18,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:18,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:18,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:18,962 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:06:18,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 58 [2021-11-25 18:06:18,979 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:06:18,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2021-11-25 18:06:18,996 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:06:18,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2021-11-25 18:06:19,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:19,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:19,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:19,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:06:19,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:19,354 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 67 for LOIs [2021-11-25 18:06:19,403 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 43 for LOIs [2021-11-25 18:06:19,416 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 41 for LOIs [2021-11-25 18:06:19,492 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 25 for LOIs [2021-11-25 18:06:19,573 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 55 for LOIs [2021-11-25 18:06:19,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:19,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:19,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:06:19,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:19,778 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 25 for LOIs [2021-11-25 18:06:19,877 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:06:25,822 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3779#(and (exists ((v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_7 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_7 Int) (aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9_67 Int)) (and (<= 0 aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9_67) (not (= (mod (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_7) (+ (ite (<= (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9_67 18446744073709551616) 9223372036854775807) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9_67 18446744073709551616) (+ (- 18446744073709551616) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9_67 18446744073709551616))) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_7)) 256) 0)) (< aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_9_67 18446744073709551615))) (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2021-11-25 18:06:25,822 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:06:25,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:06:25,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 15] total 35 [2021-11-25 18:06:25,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821105894] [2021-11-25 18:06:25,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:06:25,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-25 18:06:25,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-25 18:06:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3562, Unknown=0, NotChecked=0, Total=3782 [2021-11-25 18:06:25,825 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 35 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 4 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 18:06:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:26,711 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2021-11-25 18:06:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 18:06:26,712 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 4 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 47 [2021-11-25 18:06:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:26,713 INFO L225 Difference]: With dead ends: 124 [2021-11-25 18:06:26,713 INFO L226 Difference]: Without dead ends: 73 [2021-11-25 18:06:26,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=260, Invalid=4030, Unknown=0, NotChecked=0, Total=4290 [2021-11-25 18:06:26,716 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 9 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:26,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 841 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 342 Invalid, 0 Unknown, 231 Unchecked, 0.5s Time] [2021-11-25 18:06:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-25 18:06:26,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2021-11-25 18:06:26,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 45 states have internal predecessors, (47), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:06:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2021-11-25 18:06:26,726 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 47 [2021-11-25 18:06:26,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:26,727 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2021-11-25 18:06:26,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 4 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-25 18:06:26,727 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2021-11-25 18:06:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 18:06:26,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:26,729 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:26,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 18:06:26,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:06:26,944 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:06:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 287755932, now seen corresponding path program 4 times [2021-11-25 18:06:26,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:26,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090120649] [2021-11-25 18:06:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:26,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-25 18:06:27,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:27,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090120649] [2021-11-25 18:06:27,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090120649] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:06:27,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762389910] [2021-11-25 18:06:27,290 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:06:27,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:06:27,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:06:27,291 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:06:27,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:06:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:27,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 87 conjunts are in the unsatisfiable core [2021-11-25 18:06:27,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:06:27,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:27,949 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-11-25 18:06:27,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2021-11-25 18:06:27,997 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-25 18:06:27,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-11-25 18:06:28,057 INFO L354 Elim1Store]: treesize reduction 110, result has 19.1 percent of original size [2021-11-25 18:06:28,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 45 [2021-11-25 18:06:28,146 INFO L354 Elim1Store]: treesize reduction 178, result has 16.8 percent of original size [2021-11-25 18:06:28,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 58 [2021-11-25 18:06:28,267 INFO L354 Elim1Store]: treesize reduction 236, result has 15.7 percent of original size [2021-11-25 18:06:28,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 57 treesize of output 68 [2021-11-25 18:06:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:06:29,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:06:30,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2021-11-25 18:06:31,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2021-11-25 18:06:31,614 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:06:31,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3155 treesize of output 3147 [2021-11-25 18:06:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:06:31,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762389910] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:06:31,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [136212981] [2021-11-25 18:06:31,854 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:06:31,854 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:06:31,854 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:06:31,854 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:06:31,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:06:31,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-25 18:06:31,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2021-11-25 18:06:31,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-25 18:06:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2021-11-25 18:06:31,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:31,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:31,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:31,997 INFO L354 Elim1Store]: treesize reduction 92, result has 33.8 percent of original size [2021-11-25 18:06:31,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 105 [2021-11-25 18:06:32,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:32,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:32,082 INFO L354 Elim1Store]: treesize reduction 84, result has 39.6 percent of original size [2021-11-25 18:06:32,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 113 [2021-11-25 18:06:32,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,233 INFO L354 Elim1Store]: treesize reduction 200, result has 26.2 percent of original size [2021-11-25 18:06:32,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 96 [2021-11-25 18:06:32,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:32,460 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-25 18:06:32,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-25 18:06:32,474 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2021-11-25 18:06:32,479 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2021-11-25 18:06:32,492 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2021-11-25 18:06:32,509 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 37 for LOIs [2021-11-25 18:06:32,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,130 INFO L354 Elim1Store]: treesize reduction 327, result has 24.8 percent of original size [2021-11-25 18:06:33,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 470 [2021-11-25 18:06:33,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,343 INFO L354 Elim1Store]: treesize reduction 387, result has 27.1 percent of original size [2021-11-25 18:06:33,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 637 treesize of output 528 [2021-11-25 18:06:33,390 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:06:33,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:06:33,430 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:06:33,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:06:33,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,526 INFO L354 Elim1Store]: treesize reduction 88, result has 3.3 percent of original size [2021-11-25 18:06:33,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 254 treesize of output 134 [2021-11-25 18:06:33,540 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:33,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,558 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:06:33,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 277 treesize of output 140 [2021-11-25 18:06:33,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,598 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:33,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 266 treesize of output 133 [2021-11-25 18:06:33,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,617 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:33,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 243 treesize of output 124 [2021-11-25 18:06:33,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,677 INFO L354 Elim1Store]: treesize reduction 88, result has 3.3 percent of original size [2021-11-25 18:06:33,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 254 treesize of output 134 [2021-11-25 18:06:33,692 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:33,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,711 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:06:33,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 277 treesize of output 140 [2021-11-25 18:06:33,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,752 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:33,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 266 treesize of output 133 [2021-11-25 18:06:33,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,773 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:33,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 243 treesize of output 124 [2021-11-25 18:06:33,823 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:33,834 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:33,844 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:33,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,938 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:06:33,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 254 treesize of output 1 [2021-11-25 18:06:33,950 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:33,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:33,970 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:06:33,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 277 treesize of output 140 [2021-11-25 18:06:34,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:34,008 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:34,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 266 treesize of output 133 [2021-11-25 18:06:34,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:34,029 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:34,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 243 treesize of output 124 [2021-11-25 18:06:34,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:34,085 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:06:34,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 254 treesize of output 1 [2021-11-25 18:06:34,098 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:34,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:34,118 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:06:34,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 277 treesize of output 140 [2021-11-25 18:06:34,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:34,253 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:34,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 266 treesize of output 133 [2021-11-25 18:06:34,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:34,287 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:34,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 243 treesize of output 124 [2021-11-25 18:06:34,447 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:34,460 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:34,472 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:34,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:34,799 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:34,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 243 treesize of output 130 [2021-11-25 18:06:34,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:34,830 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:34,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 121 [2021-11-25 18:06:34,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:34,875 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:34,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 254 treesize of output 137 [2021-11-25 18:06:34,894 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:34,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:34,915 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:34,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 231 treesize of output 128 [2021-11-25 18:06:34,971 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:34,984 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:34,997 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:35,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,031 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:35,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 243 treesize of output 130 [2021-11-25 18:06:35,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:35,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 121 [2021-11-25 18:06:35,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,099 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:35,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 254 treesize of output 137 [2021-11-25 18:06:35,119 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:35,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,151 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:35,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 231 treesize of output 128 [2021-11-25 18:06:35,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,245 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:35,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 243 treesize of output 130 [2021-11-25 18:06:35,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,280 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:35,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 121 [2021-11-25 18:06:35,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,325 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:35,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 254 treesize of output 137 [2021-11-25 18:06:35,362 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:35,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,383 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:35,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 231 treesize of output 128 [2021-11-25 18:06:35,438 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:35,451 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:35,463 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:35,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,495 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:35,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 243 treesize of output 130 [2021-11-25 18:06:35,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,517 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:35,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 220 treesize of output 121 [2021-11-25 18:06:35,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,562 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:35,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 254 treesize of output 137 [2021-11-25 18:06:35,581 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:35,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,619 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:35,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 231 treesize of output 128 [2021-11-25 18:06:35,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:35,998 INFO L354 Elim1Store]: treesize reduction 80, result has 8.0 percent of original size [2021-11-25 18:06:35,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 2152 treesize of output 1103 [2021-11-25 18:06:36,062 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2021-11-25 18:06:36,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1020 treesize of output 509 [2021-11-25 18:06:36,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:36,144 INFO L354 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2021-11-25 18:06:36,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 314 treesize of output 143 [2021-11-25 18:06:36,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:36,178 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-25 18:06:36,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 86 [2021-11-25 18:06:36,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:36,220 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-25 18:06:36,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 403 treesize of output 192 [2021-11-25 18:06:36,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:36,358 INFO L354 Elim1Store]: treesize reduction 135, result has 19.2 percent of original size [2021-11-25 18:06:36,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 2163 treesize of output 1135 [2021-11-25 18:06:36,586 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-11-25 18:06:36,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 1031 treesize of output 516 [2021-11-25 18:06:36,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:36,646 INFO L354 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2021-11-25 18:06:36,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 414 treesize of output 199 [2021-11-25 18:06:36,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:36,682 INFO L354 Elim1Store]: treesize reduction 92, result has 1.1 percent of original size [2021-11-25 18:06:36,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 208 treesize of output 93 [2021-11-25 18:06:36,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:36,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:36,720 INFO L354 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2021-11-25 18:06:36,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 325 treesize of output 150 [2021-11-25 18:06:37,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:37,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:37,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:37,397 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:06:37,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 633 treesize of output 440 [2021-11-25 18:06:37,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:37,444 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2021-11-25 18:06:37,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 359 treesize of output 222 [2021-11-25 18:06:37,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:37,720 INFO L354 Elim1Store]: treesize reduction 67, result has 19.3 percent of original size [2021-11-25 18:06:37,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1176 treesize of output 815 [2021-11-25 18:06:37,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:37,754 INFO L354 Elim1Store]: treesize reduction 51, result has 21.5 percent of original size [2021-11-25 18:06:37,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 794 treesize of output 511 [2021-11-25 18:06:38,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:38,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:38,023 INFO L354 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2021-11-25 18:06:38,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1144 treesize of output 774 [2021-11-25 18:06:38,042 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:06:38,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 578 treesize of output 367 [2021-11-25 18:06:38,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:38,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:38,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:38,154 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:06:38,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 655 treesize of output 454 [2021-11-25 18:06:38,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:38,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:38,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:38,189 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:06:38,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 633 treesize of output 440 [2021-11-25 18:06:38,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:38,327 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2021-11-25 18:06:38,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 362 treesize of output 229 [2021-11-25 18:06:38,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:38,348 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2021-11-25 18:06:38,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 348 treesize of output 215 [2021-11-25 18:06:38,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:38,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:06:38,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:38,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:38,838 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:06:38,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 60 [2021-11-25 18:06:38,858 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:06:38,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2021-11-25 18:06:38,875 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:06:38,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2021-11-25 18:06:38,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:38,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:06:38,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:38,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:38,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:39,267 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 67 for LOIs [2021-11-25 18:06:39,319 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 43 for LOIs [2021-11-25 18:06:39,334 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 41 for LOIs [2021-11-25 18:06:39,422 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 25 for LOIs [2021-11-25 18:06:39,513 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 55 for LOIs [2021-11-25 18:06:39,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:06:39,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:39,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:39,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:39,652 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 25 for LOIs [2021-11-25 18:06:39,729 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:06:49,133 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4448#(and (exists ((v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_10 Int) (aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_12_68 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_10 Int)) (and (<= 0 aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_12_68) (< aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_12_68 18446744073709551615) (not (= (mod (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_10) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_10 (ite (<= (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_12_68 18446744073709551616) 9223372036854775807) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_12_68 18446744073709551616) (+ (- 18446744073709551616) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_12_68 18446744073709551616))))) 256) 0)))) (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2021-11-25 18:06:49,134 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:06:49,134 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:06:49,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 23, 18] total 46 [2021-11-25 18:06:49,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887642037] [2021-11-25 18:06:49,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:06:49,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-25 18:06:49,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:49,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-25 18:06:49,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=5088, Unknown=1, NotChecked=0, Total=5402 [2021-11-25 18:06:49,138 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 46 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 44 states have internal predecessors, (72), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-25 18:06:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:50,363 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2021-11-25 18:06:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 18:06:50,363 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 44 states have internal predecessors, (72), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 50 [2021-11-25 18:06:50,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:50,364 INFO L225 Difference]: With dead ends: 126 [2021-11-25 18:06:50,364 INFO L226 Difference]: Without dead ends: 74 [2021-11-25 18:06:50,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=375, Invalid=5786, Unknown=1, NotChecked=0, Total=6162 [2021-11-25 18:06:50,367 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 39 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:50,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 988 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 503 Invalid, 0 Unknown, 96 Unchecked, 1.0s Time] [2021-11-25 18:06:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-25 18:06:50,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-25 18:06:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.108695652173913) internal successors, (51), 48 states have internal predecessors, (51), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:06:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2021-11-25 18:06:50,377 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 50 [2021-11-25 18:06:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:50,378 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2021-11-25 18:06:50,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 44 states have internal predecessors, (72), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-25 18:06:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2021-11-25 18:06:50,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-25 18:06:50,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:50,379 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:50,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:06:50,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:06:50,592 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:06:50,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:50,592 INFO L85 PathProgramCache]: Analyzing trace with hash 590347996, now seen corresponding path program 5 times [2021-11-25 18:06:50,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:50,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689130091] [2021-11-25 18:06:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:50,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-25 18:06:50,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:50,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689130091] [2021-11-25 18:06:50,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689130091] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:06:50,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244637352] [2021-11-25 18:06:50,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:06:50,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:06:50,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:06:50,949 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:06:50,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:06:53,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:06:53,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:06:53,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-25 18:06:53,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:06:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-25 18:06:53,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:06:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-25 18:06:54,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244637352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:06:54,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [191259555] [2021-11-25 18:06:54,115 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:06:54,116 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:06:54,116 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:06:54,116 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:06:54,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:06:54,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:54,175 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-25 18:06:54,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 34 [2021-11-25 18:06:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:54,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:54,245 INFO L354 Elim1Store]: treesize reduction 84, result has 39.6 percent of original size [2021-11-25 18:06:54,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 113 [2021-11-25 18:06:54,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:54,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:54,326 INFO L354 Elim1Store]: treesize reduction 92, result has 33.8 percent of original size [2021-11-25 18:06:54,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 105 [2021-11-25 18:06:54,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,519 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-25 18:06:54,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-25 18:06:54,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 31 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 56 [2021-11-25 18:06:54,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 22 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 37 [2021-11-25 18:06:54,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:54,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-25 18:06:54,588 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:06:54,604 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:06:54,614 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:06:54,617 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 37 for LOIs [2021-11-25 18:06:54,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:55,143 INFO L354 Elim1Store]: treesize reduction 327, result has 24.8 percent of original size [2021-11-25 18:06:55,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 470 [2021-11-25 18:06:55,215 INFO L354 Elim1Store]: treesize reduction 137, result has 38.8 percent of original size [2021-11-25 18:06:55,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 87 [2021-11-25 18:06:55,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:55,382 INFO L354 Elim1Store]: treesize reduction 387, result has 27.1 percent of original size [2021-11-25 18:06:55,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 600 treesize of output 495 [2021-11-25 18:06:55,429 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:06:55,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:06:55,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:55,490 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:55,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 319 treesize of output 172 [2021-11-25 18:06:55,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:55,511 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:55,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 319 treesize of output 172 [2021-11-25 18:06:55,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:55,547 INFO L354 Elim1Store]: treesize reduction 88, result has 3.3 percent of original size [2021-11-25 18:06:55,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 330 treesize of output 182 [2021-11-25 18:06:55,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:55,574 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:06:55,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 330 treesize of output 1 [2021-11-25 18:06:55,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:55,776 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:55,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 319 treesize of output 172 [2021-11-25 18:06:55,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:55,799 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:06:55,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 319 treesize of output 172 [2021-11-25 18:06:55,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:55,840 INFO L354 Elim1Store]: treesize reduction 88, result has 3.3 percent of original size [2021-11-25 18:06:55,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 330 treesize of output 182 [2021-11-25 18:06:55,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:55,872 INFO L354 Elim1Store]: treesize reduction 88, result has 3.3 percent of original size [2021-11-25 18:06:55,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 330 treesize of output 182 [2021-11-25 18:06:55,929 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:55,943 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:56,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,133 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:56,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 169 [2021-11-25 18:06:56,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,156 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:56,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 169 [2021-11-25 18:06:56,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,189 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:56,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 307 treesize of output 176 [2021-11-25 18:06:56,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,216 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:56,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 307 treesize of output 176 [2021-11-25 18:06:56,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:56,320 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:06:56,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,369 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:56,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 169 [2021-11-25 18:06:56,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,401 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:06:56,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 169 [2021-11-25 18:06:56,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,435 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:56,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 307 treesize of output 176 [2021-11-25 18:06:56,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,463 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:06:56,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 307 treesize of output 176 [2021-11-25 18:06:56,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,700 INFO L354 Elim1Store]: treesize reduction 140, result has 4.8 percent of original size [2021-11-25 18:06:56,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 424 treesize of output 197 [2021-11-25 18:06:56,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,772 INFO L354 Elim1Store]: treesize reduction 73, result has 16.1 percent of original size [2021-11-25 18:06:56,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 522 treesize of output 240 [2021-11-25 18:06:56,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,827 INFO L354 Elim1Store]: treesize reduction 75, result has 13.8 percent of original size [2021-11-25 18:06:56,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 1049 treesize of output 471 [2021-11-25 18:06:56,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,926 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-25 18:06:56,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 511 treesize of output 223 [2021-11-25 18:06:56,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:56,959 INFO L354 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2021-11-25 18:06:56,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 413 treesize of output 184 [2021-11-25 18:06:57,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:57,051 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-25 18:06:57,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 1038 treesize of output 453 [2021-11-25 18:06:57,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:57,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:57,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:06:57,288 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:06:57,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1242 treesize of output 845 [2021-11-25 18:06:57,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:57,358 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2021-11-25 18:06:57,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 687 treesize of output 422 [2021-11-25 18:06:57,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:57,403 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-25 18:06:57,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 609 treesize of output 428 [2021-11-25 18:06:57,417 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:06:57,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 415 treesize of output 272 [2021-11-25 18:06:57,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:57,446 INFO L354 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2021-11-25 18:06:57,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1303 treesize of output 894 [2021-11-25 18:06:57,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:06:57,470 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-25 18:06:57,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 873 treesize of output 552 [2021-11-25 18:06:57,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:57,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:57,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:06:57,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:06:57,709 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:06:57,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 60 [2021-11-25 18:06:57,731 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:06:57,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2021-11-25 18:06:57,748 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:06:57,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2021-11-25 18:06:57,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:57,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:57,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:57,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:06:57,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:58,144 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 67 for LOIs [2021-11-25 18:06:58,206 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 43 for LOIs [2021-11-25 18:06:58,222 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 41 for LOIs [2021-11-25 18:06:58,349 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 25 for LOIs [2021-11-25 18:06:58,449 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 55 for LOIs [2021-11-25 18:06:58,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:06:58,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:58,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:58,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:06:58,584 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 25 for LOIs [2021-11-25 18:06:58,681 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:07:08,282 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5132#(and (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (exists ((aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13_68 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_11 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_11 Int)) (and (<= 0 aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13_68) (not (= (mod (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_11) (+ v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_11 (ite (<= (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13_68 18446744073709551616) 9223372036854775807) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13_68 18446744073709551616) (+ (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13_68 18446744073709551616) (- 18446744073709551616))))) 256) 0)) (< aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_13_68 18446744073709551615))) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2021-11-25 18:07:08,282 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:07:08,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:07:08,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 11] total 32 [2021-11-25 18:07:08,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210874357] [2021-11-25 18:07:08,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:07:08,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-25 18:07:08,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:08,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-25 18:07:08,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=3212, Unknown=1, NotChecked=0, Total=3540 [2021-11-25 18:07:08,286 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 32 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 31 states have internal predecessors, (52), 5 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-25 18:07:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:11,250 INFO L93 Difference]: Finished difference Result 136 states and 166 transitions. [2021-11-25 18:07:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 18:07:11,251 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 31 states have internal predecessors, (52), 5 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 53 [2021-11-25 18:07:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:11,253 INFO L225 Difference]: With dead ends: 136 [2021-11-25 18:07:11,253 INFO L226 Difference]: Without dead ends: 83 [2021-11-25 18:07:11,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=589, Invalid=4380, Unknown=1, NotChecked=0, Total=4970 [2021-11-25 18:07:11,255 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 60 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:11,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 557 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:07:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-25 18:07:11,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-11-25 18:07:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 57 states have internal predecessors, (60), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:07:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2021-11-25 18:07:11,267 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 53 [2021-11-25 18:07:11,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:11,267 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2021-11-25 18:07:11,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 31 states have internal predecessors, (52), 5 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-25 18:07:11,268 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2021-11-25 18:07:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-25 18:07:11,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:11,269 INFO L514 BasicCegarLoop]: trace histogram [16, 6, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:11,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:07:11,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 18:07:11,482 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:07:11,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:11,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1910262291, now seen corresponding path program 6 times [2021-11-25 18:07:11,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:11,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083157393] [2021-11-25 18:07:11,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:11,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 36 proven. 130 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:07:12,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:12,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083157393] [2021-11-25 18:07:12,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083157393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:07:12,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692766298] [2021-11-25 18:07:12,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:07:12,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:12,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:12,873 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:12,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 18:07:13,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:07:13,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:07:13,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 151 conjunts are in the unsatisfiable core [2021-11-25 18:07:13,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:13,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:07:13,517 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:07:13,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-25 18:07:13,570 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-11-25 18:07:13,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 18:07:13,634 INFO L354 Elim1Store]: treesize reduction 115, result has 19.0 percent of original size [2021-11-25 18:07:13,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 46 [2021-11-25 18:07:13,713 INFO L354 Elim1Store]: treesize reduction 184, result has 16.7 percent of original size [2021-11-25 18:07:13,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 59 [2021-11-25 18:07:13,820 INFO L354 Elim1Store]: treesize reduction 236, result has 15.7 percent of original size [2021-11-25 18:07:13,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 57 treesize of output 68 [2021-11-25 18:07:13,956 INFO L354 Elim1Store]: treesize reduction 332, result has 13.8 percent of original size [2021-11-25 18:07:13,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 67 treesize of output 81 [2021-11-25 18:07:14,145 INFO L354 Elim1Store]: treesize reduction 416, result has 13.0 percent of original size [2021-11-25 18:07:14,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 75 treesize of output 92 [2021-11-25 18:07:14,351 INFO L354 Elim1Store]: treesize reduction 540, result has 11.6 percent of original size [2021-11-25 18:07:14,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 85 treesize of output 105 [2021-11-25 18:07:14,597 INFO L354 Elim1Store]: treesize reduction 673, result has 10.7 percent of original size [2021-11-25 18:07:14,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 95 treesize of output 118 [2021-11-25 18:07:14,948 INFO L354 Elim1Store]: treesize reduction 776, result has 10.3 percent of original size [2021-11-25 18:07:14,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 102 treesize of output 128 [2021-11-25 18:07:15,383 INFO L354 Elim1Store]: treesize reduction 942, result has 9.4 percent of original size [2021-11-25 18:07:15,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 112 treesize of output 141 [2021-11-25 18:07:15,818 INFO L354 Elim1Store]: treesize reduction 1114, result has 8.8 percent of original size [2021-11-25 18:07:15,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 122 treesize of output 154 [2021-11-25 18:07:16,356 INFO L354 Elim1Store]: treesize reduction 1300, result has 8.3 percent of original size [2021-11-25 18:07:16,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 132 treesize of output 167 [2021-11-25 18:07:17,001 INFO L354 Elim1Store]: treesize reduction 1424, result has 8.1 percent of original size [2021-11-25 18:07:17,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 138 treesize of output 176 [2021-11-25 18:07:17,761 INFO L354 Elim1Store]: treesize reduction 1616, result has 7.7 percent of original size [2021-11-25 18:07:17,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 147 treesize of output 188 [2021-11-25 18:07:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:07:20,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:07:47,699 WARN L227 SmtUtils]: Spent 25.07s on a formula simplification that was a NOOP. DAG size: 219 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 18:07:50,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 175 [2021-11-25 18:07:57,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 209 [2021-11-25 18:07:57,850 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:07:57,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3272415 treesize of output 3272407 [2021-11-25 18:08:05,446 WARN L227 SmtUtils]: Spent 7.59s on a formula simplification that was a NOOP. DAG size: 266 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 18:08:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 55 proven. 111 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:08:53,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692766298] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:08:53,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1140544207] [2021-11-25 18:08:53,733 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:08:53,733 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:08:53,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:08:53,734 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:08:53,734 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:08:53,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:53,780 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-25 18:08:53,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 34 [2021-11-25 18:08:53,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:53,813 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-25 18:08:53,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 41 [2021-11-25 18:08:53,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-25 18:08:53,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:53,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:53,892 INFO L354 Elim1Store]: treesize reduction 92, result has 33.8 percent of original size [2021-11-25 18:08:53,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 105 [2021-11-25 18:08:53,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:53,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:53,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:53,980 INFO L354 Elim1Store]: treesize reduction 84, result has 39.6 percent of original size [2021-11-25 18:08:53,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 113 [2021-11-25 18:08:54,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:54,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:54,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:54,189 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-25 18:08:54,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-25 18:08:54,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:54,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:54,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:54,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 31 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 56 [2021-11-25 18:08:54,220 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:08:54,222 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:08:54,232 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-25 18:08:54,234 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 37 for LOIs [2021-11-25 18:08:54,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:54,752 INFO L354 Elim1Store]: treesize reduction 327, result has 24.8 percent of original size [2021-11-25 18:08:54,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 470 [2021-11-25 18:08:54,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:54,932 INFO L354 Elim1Store]: treesize reduction 387, result has 27.1 percent of original size [2021-11-25 18:08:54,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 637 treesize of output 528 [2021-11-25 18:08:54,987 INFO L354 Elim1Store]: treesize reduction 101, result has 44.5 percent of original size [2021-11-25 18:08:54,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 81 [2021-11-25 18:08:55,033 INFO L354 Elim1Store]: treesize reduction 101, result has 44.5 percent of original size [2021-11-25 18:08:55,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 81 [2021-11-25 18:08:55,095 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:55,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:55,135 INFO L354 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2021-11-25 18:08:55,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 432 treesize of output 314 [2021-11-25 18:08:55,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:55,170 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-11-25 18:08:55,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 432 treesize of output 311 [2021-11-25 18:08:55,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:55,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 300 [2021-11-25 18:08:55,235 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:08:55,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:55,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 402 treesize of output 300 [2021-11-25 18:08:55,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:55,399 INFO L354 Elim1Store]: treesize reduction 52, result has 40.2 percent of original size [2021-11-25 18:08:55,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 447 treesize of output 356 [2021-11-25 18:08:55,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:55,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:55,445 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 18:08:55,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 447 treesize of output 1 [2021-11-25 18:08:55,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:55,505 INFO L354 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2021-11-25 18:08:55,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 447 treesize of output 1 [2021-11-25 18:08:55,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:55,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:55,611 INFO L354 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2021-11-25 18:08:55,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 417 treesize of output 314 [2021-11-25 18:08:55,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:55,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:55,653 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-11-25 18:08:55,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 417 treesize of output 311 [2021-11-25 18:08:55,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:55,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:55,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 417 treesize of output 280 [2021-11-25 18:08:56,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:56,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:56,008 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:08:56,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 73 [2021-11-25 18:08:56,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:56,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:56,076 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:08:56,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 179 treesize of output 82 [2021-11-25 18:08:56,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:56,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:56,281 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:08:56,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 171 treesize of output 76 [2021-11-25 18:08:56,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:56,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:56,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:56,422 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:08:56,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 177 treesize of output 80 [2021-11-25 18:08:56,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:56,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:08:56,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:56,444 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:08:56,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 198 treesize of output 85 [2021-11-25 18:08:56,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:56,646 INFO L354 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2021-11-25 18:08:56,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 185 treesize of output 88 [2021-11-25 18:08:57,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,019 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-11-25 18:08:57,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 967 treesize of output 634 [2021-11-25 18:08:57,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,059 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-25 18:08:57,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 182 treesize of output 117 [2021-11-25 18:08:57,079 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-25 18:08:57,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 1038 treesize of output 608 [2021-11-25 18:08:57,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,100 INFO L354 Elim1Store]: treesize reduction 66, result has 4.3 percent of original size [2021-11-25 18:08:57,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 570 treesize of output 396 [2021-11-25 18:08:57,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,134 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-25 18:08:57,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 5 case distinctions, treesize of input 1203 treesize of output 697 [2021-11-25 18:08:57,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,154 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-25 18:08:57,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 662 treesize of output 457 [2021-11-25 18:08:57,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,200 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-25 18:08:57,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 5 case distinctions, treesize of input 1150 treesize of output 656 [2021-11-25 18:08:57,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,223 INFO L354 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2021-11-25 18:08:57,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 614 treesize of output 425 [2021-11-25 18:08:57,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,299 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-25 18:08:57,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 614 treesize of output 394 [2021-11-25 18:08:57,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,324 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:08:57,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 582 treesize of output 378 [2021-11-25 18:08:57,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,380 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-25 18:08:57,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 312 treesize of output 181 [2021-11-25 18:08:57,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:08:57,404 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-25 18:08:57,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 289 treesize of output 158 [2021-11-25 18:08:57,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:08:57,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:08:57,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:08:57,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:08:57,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:57,744 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:08:57,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 58 [2021-11-25 18:08:57,764 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:08:57,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2021-11-25 18:08:57,781 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:08:57,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2021-11-25 18:08:57,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:08:57,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:57,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:57,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:58,153 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 67 for LOIs [2021-11-25 18:08:58,215 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 43 for LOIs [2021-11-25 18:08:58,230 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 41 for LOIs [2021-11-25 18:08:58,325 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 25 for LOIs [2021-11-25 18:08:58,429 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 55 for LOIs [2021-11-25 18:08:58,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:58,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:58,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:08:58,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:08:58,577 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 25 for LOIs [2021-11-25 18:08:58,656 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:09:13,312 WARN L227 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 67 DAG size of output: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:09:13,686 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5974#(and (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (<= ~tl_last_error~0 0) (exists ((aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15_68 Int) (v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_13 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_13 Int)) (and (not (= (mod (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_13) (+ (ite (<= (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15_68 18446744073709551616) 9223372036854775807) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15_68 18446744073709551616) (+ (- 18446744073709551616) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15_68 18446744073709551616))) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_13)) 256) 0)) (<= 0 aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15_68) (< aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_15_68 18446744073709551615))) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2021-11-25 18:09:13,687 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:09:13,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:09:13,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 34, 29] total 86 [2021-11-25 18:09:13,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397339103] [2021-11-25 18:09:13,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:09:13,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-25 18:09:13,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-25 18:09:13,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=777, Invalid=11879, Unknown=0, NotChecked=0, Total=12656 [2021-11-25 18:09:13,693 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 86 states, 84 states have (on average 1.369047619047619) internal successors, (115), 84 states have internal predecessors, (115), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-25 18:09:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:17,434 INFO L93 Difference]: Finished difference Result 115 states and 136 transitions. [2021-11-25 18:09:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-25 18:09:17,435 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 84 states have (on average 1.369047619047619) internal successors, (115), 84 states have internal predecessors, (115), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 62 [2021-11-25 18:09:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:17,436 INFO L225 Difference]: With dead ends: 115 [2021-11-25 18:09:17,436 INFO L226 Difference]: Without dead ends: 87 [2021-11-25 18:09:17,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4285 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=884, Invalid=13158, Unknown=0, NotChecked=0, Total=14042 [2021-11-25 18:09:17,439 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 63 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:17,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 1516 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1187 Invalid, 0 Unknown, 105 Unchecked, 2.9s Time] [2021-11-25 18:09:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-25 18:09:17,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-11-25 18:09:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 57 states have (on average 1.105263157894737) internal successors, (63), 59 states have internal predecessors, (63), 18 states have call successors, (18), 8 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:09:17,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2021-11-25 18:09:17,452 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 62 [2021-11-25 18:09:17,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:17,452 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2021-11-25 18:09:17,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 84 states have (on average 1.369047619047619) internal successors, (115), 84 states have internal predecessors, (115), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-25 18:09:17,453 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2021-11-25 18:09:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 18:09:17,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:17,454 INFO L514 BasicCegarLoop]: trace histogram [16, 4, 4, 3, 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] [2021-11-25 18:09:17,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:09:17,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:17,668 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:17,668 INFO L85 PathProgramCache]: Analyzing trace with hash 342665664, now seen corresponding path program 2 times [2021-11-25 18:09:17,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:17,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912139481] [2021-11-25 18:09:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:17,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 17 proven. 121 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 18:09:19,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:19,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912139481] [2021-11-25 18:09:19,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912139481] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:09:19,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118618058] [2021-11-25 18:09:19,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:09:19,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:19,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:09:19,183 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:09:19,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:09:21,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:09:21,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:09:21,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 18:09:21,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:09:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-25 18:09:22,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:09:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-25 18:09:22,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118618058] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:09:22,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1020608561] [2021-11-25 18:09:22,366 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2021-11-25 18:09:22,366 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:09:22,367 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:09:22,367 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:09:22,367 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:09:22,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:09:22,409 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-25 18:09:22,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 41 [2021-11-25 18:09:22,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-25 18:09:22,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,597 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-25 18:09:22,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-25 18:09:22,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 19 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 26 [2021-11-25 18:09:22,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 29 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 91 [2021-11-25 18:09:22,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 29 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 91 [2021-11-25 18:09:22,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:22,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 31 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 56 [2021-11-25 18:09:22,704 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 177 for LOIs [2021-11-25 18:09:23,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:23,325 INFO L354 Elim1Store]: treesize reduction 327, result has 24.8 percent of original size [2021-11-25 18:09:23,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 470 [2021-11-25 18:09:23,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:23,500 INFO L354 Elim1Store]: treesize reduction 387, result has 27.1 percent of original size [2021-11-25 18:09:23,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 637 treesize of output 528 [2021-11-25 18:09:23,547 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:09:23,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:09:23,593 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:09:23,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:09:23,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:23,657 INFO L354 Elim1Store]: treesize reduction 55, result has 45.5 percent of original size [2021-11-25 18:09:23,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 533 treesize of output 371 [2021-11-25 18:09:23,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:09:23,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:23,692 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-25 18:09:23,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 537 treesize of output 303 [2021-11-25 18:09:23,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:23,742 INFO L354 Elim1Store]: treesize reduction 100, result has 1.0 percent of original size [2021-11-25 18:09:23,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 537 treesize of output 330 [2021-11-25 18:09:23,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:23,824 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:09:23,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 49 [2021-11-25 18:09:23,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:23,873 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:09:23,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 64 [2021-11-25 18:09:23,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:23,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:09:23,910 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:09:23,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 47 [2021-11-25 18:09:23,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:23,949 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-25 18:09:23,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 71 [2021-11-25 18:09:23,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:23,968 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-25 18:09:23,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 56 [2021-11-25 18:09:24,129 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-25 18:09:24,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 428 treesize of output 321 [2021-11-25 18:09:24,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:24,158 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-25 18:09:24,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 364 treesize of output 267 [2021-11-25 18:09:24,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:24,194 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-11-25 18:09:24,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 461 treesize of output 344 [2021-11-25 18:09:24,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:24,225 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-25 18:09:24,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 260 treesize of output 163 [2021-11-25 18:09:24,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:24,262 INFO L354 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2021-11-25 18:09:24,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 906 treesize of output 657 [2021-11-25 18:09:24,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:24,279 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-25 18:09:24,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 625 treesize of output 420 [2021-11-25 18:09:24,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:09:24,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:09:24,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:09:24,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:09:24,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:09:24,567 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:09:24,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 58 [2021-11-25 18:09:24,591 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:09:24,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2021-11-25 18:09:24,615 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:09:24,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2021-11-25 18:09:24,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:09:24,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:09:24,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:09:24,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:09:25,224 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 65 for LOIs [2021-11-25 18:09:26,139 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 20 for LOIs [2021-11-25 18:09:26,142 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 41 for LOIs [2021-11-25 18:09:26,232 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 168 for LOIs [2021-11-25 18:09:26,422 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 55 for LOIs [2021-11-25 18:09:26,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:09:26,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:09:26,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:09:26,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:09:26,559 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 20 for LOIs [2021-11-25 18:09:26,629 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:09:32,776 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6747#(and (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (= (mod __VERIFIER_assert_~cond 256) 0) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (exists ((|v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194| Int) (|v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_146| Int)) (and (<= 0 |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_146|) (<= 0 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194|) (or (and (or (and (= |__VERIFIER_assert_#in~cond| 0) (or (not (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_146|) (+ 8 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194|)) 0)) (not (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_146|) (+ 8 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194|)) 0)))) (and (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_146|) (+ 8 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194|)) 0) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_146|) (+ 8 |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194|)) 0) (= |__VERIFIER_assert_#in~cond| 1))) (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_146|) |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194|) 0) (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_146|) |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194|) 0)) (and (or (not (= (select (select |#memory_$Pointer$.offset| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_146|) |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194|) 0)) (not (= (select (select |#memory_$Pointer$.base| |v_aws_linked_list_remove_~node#1.base_BEFORE_CALL_146|) |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194|) 0))) (= |__VERIFIER_assert_#in~cond| 0))) (<= |v_aws_linked_list_remove_~node#1.offset_BEFORE_CALL_194| 0))) (<= 0 |#StackHeapBarrier|) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2021-11-25 18:09:32,776 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:09:32,777 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:09:32,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 8, 8] total 36 [2021-11-25 18:09:32,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890069546] [2021-11-25 18:09:32,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:09:32,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-25 18:09:32,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:32,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-25 18:09:32,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=4035, Unknown=0, NotChecked=0, Total=4290 [2021-11-25 18:09:32,779 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 36 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 35 states have internal predecessors, (72), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 18:09:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:35,186 INFO L93 Difference]: Finished difference Result 136 states and 161 transitions. [2021-11-25 18:09:35,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 18:09:35,187 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 35 states have internal predecessors, (72), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 65 [2021-11-25 18:09:35,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:35,188 INFO L225 Difference]: With dead ends: 136 [2021-11-25 18:09:35,188 INFO L226 Difference]: Without dead ends: 102 [2021-11-25 18:09:35,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=340, Invalid=5062, Unknown=0, NotChecked=0, Total=5402 [2021-11-25 18:09:35,190 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 72 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:35,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 1072 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:09:35,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-25 18:09:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2021-11-25 18:09:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 69 states have internal predecessors, (74), 18 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:09:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2021-11-25 18:09:35,205 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 65 [2021-11-25 18:09:35,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:35,206 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2021-11-25 18:09:35,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 35 states have internal predecessors, (72), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 18:09:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2021-11-25 18:09:35,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 18:09:35,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:35,208 INFO L514 BasicCegarLoop]: trace histogram [16, 7, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:35,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:09:35,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:35,416 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:35,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash 157240222, now seen corresponding path program 7 times [2021-11-25 18:09:35,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:35,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904460329] [2021-11-25 18:09:35,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:35,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 28 proven. 150 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:09:36,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:36,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904460329] [2021-11-25 18:09:36,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904460329] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:09:36,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855588707] [2021-11-25 18:09:36,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:09:36,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:36,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:09:36,861 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:09:36,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 18:09:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:37,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 154 conjunts are in the unsatisfiable core [2021-11-25 18:09:37,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:09:37,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:09:37,554 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-25 18:09:37,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-25 18:09:37,621 INFO L354 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2021-11-25 18:09:37,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-25 18:09:37,705 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-11-25 18:09:37,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-11-25 18:09:37,828 INFO L354 Elim1Store]: treesize reduction 172, result has 16.9 percent of original size [2021-11-25 18:09:37,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 57 [2021-11-25 18:09:37,999 INFO L354 Elim1Store]: treesize reduction 253, result has 15.1 percent of original size [2021-11-25 18:09:37,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 70 [2021-11-25 18:09:38,190 INFO L354 Elim1Store]: treesize reduction 320, result has 14.2 percent of original size [2021-11-25 18:09:38,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 66 treesize of output 80 [2021-11-25 18:09:38,404 INFO L354 Elim1Store]: treesize reduction 430, result has 12.6 percent of original size [2021-11-25 18:09:38,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 76 treesize of output 93 [2021-11-25 18:09:38,629 INFO L354 Elim1Store]: treesize reduction 550, result has 11.6 percent of original size [2021-11-25 18:09:38,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2021-11-25 18:09:38,886 INFO L354 Elim1Store]: treesize reduction 684, result has 10.7 percent of original size [2021-11-25 18:09:38,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 96 treesize of output 119 [2021-11-25 18:09:39,188 INFO L354 Elim1Store]: treesize reduction 776, result has 10.3 percent of original size [2021-11-25 18:09:39,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 102 treesize of output 128 [2021-11-25 18:09:39,563 INFO L354 Elim1Store]: treesize reduction 920, result has 9.6 percent of original size [2021-11-25 18:09:39,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 111 treesize of output 140 [2021-11-25 18:09:40,015 INFO L354 Elim1Store]: treesize reduction 1076, result has 9.0 percent of original size [2021-11-25 18:09:40,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 120 treesize of output 152 [2021-11-25 18:09:40,562 INFO L354 Elim1Store]: treesize reduction 1270, result has 8.4 percent of original size [2021-11-25 18:09:40,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 165 [2021-11-25 18:09:41,198 INFO L354 Elim1Store]: treesize reduction 1424, result has 8.1 percent of original size [2021-11-25 18:09:41,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 138 treesize of output 176 [2021-11-25 18:09:41,943 INFO L354 Elim1Store]: treesize reduction 1616, result has 7.7 percent of original size [2021-11-25 18:09:41,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 147 treesize of output 188 [2021-11-25 18:09:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:09:44,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:10:39,146 WARN L227 SmtUtils]: Spent 51.53s on a formula simplification. DAG size of input: 221 DAG size of output: 219 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 18:10:42,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 175 [2021-11-25 18:10:50,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 209 [2021-11-25 18:10:50,577 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:10:50,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3211229 treesize of output 3211221 [2021-11-25 18:10:58,264 WARN L227 SmtUtils]: Spent 7.69s on a formula simplification that was a NOOP. DAG size: 266 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 18:11:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 63 proven. 115 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:11:24,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855588707] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:11:24,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [24163113] [2021-11-25 18:11:24,762 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2021-11-25 18:11:24,762 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:11:24,762 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:11:24,763 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:11:24,763 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:11:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:24,810 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-25 18:11:24,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 34 [2021-11-25 18:11:24,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:24,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:24,883 INFO L354 Elim1Store]: treesize reduction 84, result has 39.6 percent of original size [2021-11-25 18:11:24,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 113 [2021-11-25 18:11:24,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:24,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,036 INFO L354 Elim1Store]: treesize reduction 200, result has 26.2 percent of original size [2021-11-25 18:11:25,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 96 [2021-11-25 18:11:25,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-11-25 18:11:25,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2021-11-25 18:11:25,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:25,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:25,176 INFO L354 Elim1Store]: treesize reduction 92, result has 33.8 percent of original size [2021-11-25 18:11:25,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 179 treesize of output 105 [2021-11-25 18:11:25,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,388 INFO L354 Elim1Store]: treesize reduction 312, result has 20.2 percent of original size [2021-11-25 18:11:25,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 70 treesize of output 133 [2021-11-25 18:11:25,402 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2021-11-25 18:11:25,406 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2021-11-25 18:11:25,418 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2021-11-25 18:11:25,426 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_remove with input of size 37 for LOIs [2021-11-25 18:11:25,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:25,937 INFO L354 Elim1Store]: treesize reduction 327, result has 24.8 percent of original size [2021-11-25 18:11:25,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 470 [2021-11-25 18:11:26,002 INFO L354 Elim1Store]: treesize reduction 137, result has 38.8 percent of original size [2021-11-25 18:11:26,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 87 [2021-11-25 18:11:26,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,174 INFO L354 Elim1Store]: treesize reduction 387, result has 27.1 percent of original size [2021-11-25 18:11:26,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 600 treesize of output 495 [2021-11-25 18:11:26,224 INFO L354 Elim1Store]: treesize reduction 97, result has 45.5 percent of original size [2021-11-25 18:11:26,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 81 [2021-11-25 18:11:26,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,276 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:11:26,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 246 treesize of output 143 [2021-11-25 18:11:26,291 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:26,305 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:26,316 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:26,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,347 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:11:26,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 246 treesize of output 143 [2021-11-25 18:11:26,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,369 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-25 18:11:26,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 269 treesize of output 146 [2021-11-25 18:11:26,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,426 INFO L354 Elim1Store]: treesize reduction 47, result has 20.3 percent of original size [2021-11-25 18:11:26,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 264 treesize of output 173 [2021-11-25 18:11:26,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,462 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:11:26,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 287 treesize of output 164 [2021-11-25 18:11:26,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,526 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:11:26,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 246 treesize of output 143 [2021-11-25 18:11:26,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,558 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-25 18:11:26,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 269 treesize of output 146 [2021-11-25 18:11:26,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,595 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:11:26,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 264 treesize of output 161 [2021-11-25 18:11:26,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:26,627 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:11:26,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 287 treesize of output 164 [2021-11-25 18:11:26,700 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:26,718 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:26,738 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:26,754 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:26,916 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:26,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:26,960 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:26,977 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:27,141 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:27,153 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:27,168 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:27,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:27,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,355 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-25 18:11:27,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 292 treesize of output 155 [2021-11-25 18:11:27,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,379 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:11:27,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 152 [2021-11-25 18:11:27,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,411 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:11:27,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 287 treesize of output 170 [2021-11-25 18:11:27,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,438 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:11:27,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 310 treesize of output 173 [2021-11-25 18:11:27,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,507 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-25 18:11:27,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 292 treesize of output 155 [2021-11-25 18:11:27,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,531 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:11:27,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 269 treesize of output 152 [2021-11-25 18:11:27,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,563 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-25 18:11:27,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 287 treesize of output 170 [2021-11-25 18:11:27,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:27,592 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-25 18:11:27,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 310 treesize of output 173 [2021-11-25 18:11:27,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:27,739 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:27,756 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:27,771 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:11:28,064 INFO L354 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2021-11-25 18:11:28,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 231 treesize of output 142 [2021-11-25 18:11:28,104 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:11:28,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 272 treesize of output 155 [2021-11-25 18:11:28,201 INFO L354 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2021-11-25 18:11:28,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 586 treesize of output 311 [2021-11-25 18:11:28,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:28,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:28,408 INFO L354 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2021-11-25 18:11:28,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1064 treesize of output 706 [2021-11-25 18:11:28,418 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:11:28,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 363 treesize of output 240 [2021-11-25 18:11:28,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:28,464 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-25 18:11:28,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 1942 treesize of output 1293 [2021-11-25 18:11:28,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:28,485 INFO L354 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2021-11-25 18:11:28,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 997 treesize of output 627 [2021-11-25 18:11:28,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:28,530 INFO L354 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2021-11-25 18:11:28,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 1181 treesize of output 800 [2021-11-25 18:11:28,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:28,571 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-25 18:11:28,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 768 treesize of output 495 [2021-11-25 18:11:28,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:11:28,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:11:28,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:11:28,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:11:28,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:11:28,983 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:11:28,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 58 [2021-11-25 18:11:29,008 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:11:29,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2021-11-25 18:11:29,024 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-25 18:11:29,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2021-11-25 18:11:29,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:11:29,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:11:29,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:11:29,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:11:29,360 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 67 for LOIs [2021-11-25 18:11:29,422 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 43 for LOIs [2021-11-25 18:11:29,437 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_mem_zeroed with input of size 41 for LOIs [2021-11-25 18:11:29,510 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_prev_is_valid with input of size 25 for LOIs [2021-11-25 18:11:29,588 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 55 for LOIs [2021-11-25 18:11:29,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:11:29,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:11:29,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 18:11:29,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:11:29,735 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_node_next_is_valid with input of size 25 for LOIs [2021-11-25 18:11:29,813 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:11:37,246 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7619#(and (<= 0 |#NULL.base|) (<= 0 |~#s_can_fail_allocator_static~0.offset|) (<= 5 |~#s_can_fail_allocator_static~0.base|) (<= |~#s_can_fail_allocator_static~0.base| 5) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0) (<= ~tl_last_error~0 0) (<= |#NULL.base| 0) (<= 0 ~tl_last_error~0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (exists ((v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_16 Int) (v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_16 Int) (aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20_68 Int)) (and (not (= (mod (select (select |#memory_int| v_aws_is_mem_zeroed_~buf_u8~0.base_BEFORE_RETURN_16) (+ (ite (<= (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20_68 18446744073709551616) 9223372036854775807) (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20_68 18446744073709551616) (+ (mod aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20_68 18446744073709551616) (- 18446744073709551616))) v_aws_is_mem_zeroed_~buf_u8~0.offset_BEFORE_RETURN_16)) 256) 0)) (<= 0 aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20_68) (< aux_mod_v_aws_is_mem_zeroed_~i~0_BEFORE_RETURN_20_68 18446744073709551615))) (<= |~#s_can_fail_allocator_static~0.offset| 0))' at error location [2021-11-25 18:11:37,246 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:11:37,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:11:37,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 35, 30] total 89 [2021-11-25 18:11:37,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779477657] [2021-11-25 18:11:37,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:11:37,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-11-25 18:11:37,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:37,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-11-25 18:11:37,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=772, Invalid=12568, Unknown=0, NotChecked=0, Total=13340 [2021-11-25 18:11:37,248 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand has 89 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 87 states have internal predecessors, (121), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-25 18:11:41,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:41,808 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2021-11-25 18:11:41,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-25 18:11:41,809 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 87 states have internal predecessors, (121), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 64 [2021-11-25 18:11:41,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:41,810 INFO L225 Difference]: With dead ends: 130 [2021-11-25 18:11:41,810 INFO L226 Difference]: Without dead ends: 98 [2021-11-25 18:11:41,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4361 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=867, Invalid=13653, Unknown=0, NotChecked=0, Total=14520 [2021-11-25 18:11:41,813 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 60 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:41,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1734 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1390 Invalid, 0 Unknown, 65 Unchecked, 3.8s Time] [2021-11-25 18:11:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-25 18:11:41,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-11-25 18:11:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 67 states have (on average 1.0895522388059702) internal successors, (73), 69 states have internal predecessors, (73), 18 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2021-11-25 18:11:41,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-11-25 18:11:41,829 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 64 [2021-11-25 18:11:41,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:41,830 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-11-25 18:11:41,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 87 states have internal predecessors, (121), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-25 18:11:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-11-25 18:11:41,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 18:11:41,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:41,832 INFO L514 BasicCegarLoop]: trace histogram [16, 8, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:41,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 18:11:42,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 18:11:42,048 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1542702833, now seen corresponding path program 8 times [2021-11-25 18:11:42,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:42,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252038988] [2021-11-25 18:11:42,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:42,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 21 proven. 171 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:11:43,204 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:43,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252038988] [2021-11-25 18:11:43,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252038988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:11:43,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572009172] [2021-11-25 18:11:43,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:11:43,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:11:43,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:43,205 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:11:43,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcdc5fb4-98f0-49c8-abbf-c9d5a0d77fb6/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 18:12:18,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-25 18:12:18,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:18,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 193 conjunts are in the unsatisfiable core [2021-11-25 18:12:18,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:18,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:18,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:18,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:18,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:18,727 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:12:18,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 28 [2021-11-25 18:12:18,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:18,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:18,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:18,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:18,764 INFO L354 Elim1Store]: treesize reduction 52, result has 32.5 percent of original size [2021-11-25 18:12:18,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 45 [2021-11-25 18:12:18,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:12:18,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2021-11-25 18:12:18,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:12:18,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-11-25 18:12:18,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 18:12:18,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 18:12:18,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 18:12:19,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 18:12:19,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-25 18:12:19,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-25 18:12:19,774 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-11-25 18:12:19,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-25 18:12:19,854 INFO L354 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2021-11-25 18:12:19,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-11-25 18:12:19,960 INFO L354 Elim1Store]: treesize reduction 135, result has 18.7 percent of original size [2021-11-25 18:12:19,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 50 [2021-11-25 18:12:20,066 INFO L354 Elim1Store]: treesize reduction 129, result has 19.4 percent of original size [2021-11-25 18:12:20,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 49 [2021-11-25 18:12:20,229 INFO L354 Elim1Store]: treesize reduction 194, result has 17.1 percent of original size [2021-11-25 18:12:20,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 61 [2021-11-25 18:12:20,380 INFO L354 Elim1Store]: treesize reduction 194, result has 17.1 percent of original size [2021-11-25 18:12:20,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 61 [2021-11-25 18:12:20,524 INFO L354 Elim1Store]: treesize reduction 194, result has 17.1 percent of original size [2021-11-25 18:12:20,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 61 [2021-11-25 18:12:26,716 INFO L354 Elim1Store]: treesize reduction 271, result has 15.3 percent of original size [2021-11-25 18:12:26,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 73 [2021-11-25 18:12:32,936 INFO L354 Elim1Store]: treesize reduction 271, result has 15.3 percent of original size [2021-11-25 18:12:32,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 73 [2021-11-25 18:12:39,159 INFO L354 Elim1Store]: treesize reduction 271, result has 15.3 percent of original size [2021-11-25 18:12:39,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 73 [2021-11-25 18:12:45,379 INFO L354 Elim1Store]: treesize reduction 271, result has 15.3 percent of original size [2021-11-25 18:12:45,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 73 [2021-11-25 18:12:51,620 INFO L354 Elim1Store]: treesize reduction 271, result has 15.3 percent of original size [2021-11-25 18:12:51,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 73 [2021-11-25 18:13:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 3 proven. 178 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 18:13:03,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:13:14,962 WARN L227 SmtUtils]: Spent 7.91s on a formula simplification that was a NOOP. DAG size: 181 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 18:13:15,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 149 [2021-11-25 18:13:22,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input -5440755525117949479 treesize of output -6593677029724796455