./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --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 b8488bc4b38d88c79bc520e9824284003ed2f71ce856a53cf11e7fc61dbeef4b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:06:32,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:06:32,949 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-25 00:06:32,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:06:32,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:06:33,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:06:33,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:06:33,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:06:33,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:06:33,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:06:33,022 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:06:33,023 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:06:33,023 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:06:33,026 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:06:33,026 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:06:33,027 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:06:33,027 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:06:33,027 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:06:33,028 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:06:33,029 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:06:33,029 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:06:33,030 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:06:33,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:06:33,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:06:33,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:06:33,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:06:33,033 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:06:33,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:06:33,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:06:33,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:06:33,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:06:33,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:06:33,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:06:33,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:06:33,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:33,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:06:33,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:06:33,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:06:33,039 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:06:33,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:06:33,039 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:06:33,040 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:06:33,040 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:06:33,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:06:33,041 INFO L153 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_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8488bc4b38d88c79bc520e9824284003ed2f71ce856a53cf11e7fc61dbeef4b [2023-11-25 00:06:33,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:06:33,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:06:33,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:06:33,446 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:06:33,447 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:06:33,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2023-11-25 00:06:36,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:06:37,176 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:06:37,177 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i [2023-11-25 00:06:37,241 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/data/06662594b/485ce19e154d49e78b00741e0a84b3e5/FLAGa145f903c [2023-11-25 00:06:37,259 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/data/06662594b/485ce19e154d49e78b00741e0a84b3e5 [2023-11-25 00:06:37,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:06:37,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:06:37,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:37,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:06:37,277 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:06:37,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:37" (1/1) ... [2023-11-25 00:06:37,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e26c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:37, skipping insertion in model container [2023-11-25 00:06:37,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:06:37" (1/1) ... [2023-11-25 00:06:37,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:06:37,693 WARN L240 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_75b52f2a-a940-430f-9ba8-5b081436be92/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2023-11-25 00:06:37,705 WARN L240 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_75b52f2a-a940-430f-9ba8-5b081436be92/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2023-11-25 00:06:38,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,750 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,750 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,751 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,753 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,769 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,770 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,773 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,776 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,778 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,779 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:38,779 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,254 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:06:39,256 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:06:39,257 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:06:39,259 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:06:39,261 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:06:39,262 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:06:39,262 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:06:39,263 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:06:39,264 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:06:39,265 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:06:39,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:39,514 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:06:39,534 WARN L240 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_75b52f2a-a940-430f-9ba8-5b081436be92/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4495,4508] [2023-11-25 00:06:39,535 WARN L240 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_75b52f2a-a940-430f-9ba8-5b081436be92/sv-benchmarks/c/aws-c-common/aws_linked_list_begin_harness.i[4555,4568] [2023-11-25 00:06:39,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,606 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,607 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,608 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,621 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,629 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,637 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,639 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,643 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,644 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,646 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-25 00:06:39,715 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-25 00:06:39,717 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-25 00:06:39,718 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-25 00:06:39,719 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-25 00:06:39,720 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-25 00:06:39,721 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-25 00:06:39,722 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-25 00:06:39,723 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-25 00:06:39,724 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-25 00:06:39,724 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-25 00:06:39,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:06:40,081 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,081 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,082 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,082 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,082 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,082 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,082 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,082 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,083 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,083 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,083 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,083 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,083 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,083 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,084 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,084 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:06:40,092 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:06:40,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40 WrapperNode [2023-11-25 00:06:40,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:06:40,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:40,094 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:06:40,095 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:06:40,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,233 INFO L138 Inliner]: procedures = 678, calls = 1041, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 141 [2023-11-25 00:06:40,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:06:40,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:06:40,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:06:40,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:06:40,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:06:40,332 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:06:40,332 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:06:40,333 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:06:40,333 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (1/1) ... [2023-11-25 00:06:40,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:06:40,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:40,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:06:40,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:06:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:06:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:06:40,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:06:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-25 00:06:40,487 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-25 00:06:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:06:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-25 00:06:40,488 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-25 00:06:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:06:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:06:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:06:40,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:06:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:06:40,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:06:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:06:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:06:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-25 00:06:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-25 00:06:40,492 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-25 00:06:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:06:40,849 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:06:40,851 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:06:41,155 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:06:41,321 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:06:41,322 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-25 00:06:41,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:41 BoogieIcfgContainer [2023-11-25 00:06:41,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:06:41,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:06:41,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:06:41,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:06:41,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:06:37" (1/3) ... [2023-11-25 00:06:41,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776c2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:41, skipping insertion in model container [2023-11-25 00:06:41,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:06:40" (2/3) ... [2023-11-25 00:06:41,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776c2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:06:41, skipping insertion in model container [2023-11-25 00:06:41,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:06:41" (3/3) ... [2023-11-25 00:06:41,338 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_begin_harness.i [2023-11-25 00:06:41,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:06:41,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:06:41,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:06:41,413 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@52392a1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:06:41,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:06:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:06:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-25 00:06:41,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:41,428 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-25 00:06:41,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:41,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash -506232321, now seen corresponding path program 1 times [2023-11-25 00:06:41,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:41,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48127884] [2023-11-25 00:06:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:41,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-25 00:06:42,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:42,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48127884] [2023-11-25 00:06:42,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48127884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:06:42,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171356753] [2023-11-25 00:06:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:42,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:42,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:42,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:42,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:06:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:42,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-25 00:06:42,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:43,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-25 00:06:43,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-25 00:06:43,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2023-11-25 00:06:43,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2023-11-25 00:06:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:06:46,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:46,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171356753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:46,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:06:46,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2023-11-25 00:06:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48491513] [2023-11-25 00:06:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:46,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-25 00:06:46,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:06:46,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-25 00:06:46,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:06:46,226 INFO L87 Difference]: Start difference. First operand has 46 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-25 00:06:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:47,015 INFO L93 Difference]: Finished difference Result 124 states and 173 transitions. [2023-11-25 00:06:47,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:06:47,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 37 [2023-11-25 00:06:47,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:47,027 INFO L225 Difference]: With dead ends: 124 [2023-11-25 00:06:47,028 INFO L226 Difference]: Without dead ends: 81 [2023-11-25 00:06:47,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:06:47,036 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 34 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:47,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 244 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:06:47,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-25 00:06:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2023-11-25 00:06:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 45 states have (on average 1.288888888888889) internal successors, (58), 47 states have internal predecessors, (58), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-25 00:06:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-11-25 00:06:47,102 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 37 [2023-11-25 00:06:47,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:47,103 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-11-25 00:06:47,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-25 00:06:47,103 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-11-25 00:06:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-25 00:06:47,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:47,107 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-25 00:06:47,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:47,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-25 00:06:47,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:06:47,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:47,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1923609863, now seen corresponding path program 1 times [2023-11-25 00:06:47,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:06:47,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510258422] [2023-11-25 00:06:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:47,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:06:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-25 00:06:47,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:06:47,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510258422] [2023-11-25 00:06:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510258422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:06:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164609555] [2023-11-25 00:06:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:47,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:06:47,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:06:47,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:06:47,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:06:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:47,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-25 00:06:47,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:48,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-25 00:06:48,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-25 00:06:48,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2023-11-25 00:06:48,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:06:48,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-25 00:06:48,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2023-11-25 00:06:48,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:06:48,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-25 00:06:48,389 INFO L349 Elim1Store]: treesize reduction 96, result has 23.2 percent of original size [2023-11-25 00:06:48,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 93 [2023-11-25 00:06:48,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:06:48,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 21 [2023-11-25 00:06:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:06:51,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:07:00,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:07:00,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 388 treesize of output 473 [2023-11-25 00:07:01,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:07:01,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 364 treesize of output 449 [2023-11-25 00:07:02,198 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-25 00:07:02,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 58 [2023-11-25 00:07:02,316 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-25 00:07:02,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 58 [2023-11-25 00:07:02,395 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-25 00:07:02,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 58 [2023-11-25 00:07:02,556 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-25 00:07:02,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 58 [2023-11-25 00:07:02,719 INFO L224 Elim1Store]: Index analysis took 112 ms [2023-11-25 00:07:02,731 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-25 00:07:02,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 58 [2023-11-25 00:07:03,021 INFO L224 Elim1Store]: Index analysis took 112 ms [2023-11-25 00:07:03,034 INFO L349 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-25 00:07:03,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 58 [2023-11-25 00:07:05,450 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-25 00:07:05,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 19 [2023-11-25 00:07:05,573 INFO L349 Elim1Store]: treesize reduction 73, result has 7.6 percent of original size [2023-11-25 00:07:05,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 109 [2023-11-25 00:07:05,722 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-25 00:07:05,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 1 [2023-11-25 00:07:06,178 INFO L349 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2023-11-25 00:07:06,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2023-11-25 00:07:06,859 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:06,899 INFO L349 Elim1Store]: treesize reduction 43, result has 12.2 percent of original size [2023-11-25 00:07:06,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 78 treesize of output 73 [2023-11-25 00:07:07,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 18 [2023-11-25 00:07:07,158 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-25 00:07:07,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 40 [2023-11-25 00:07:07,210 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-25 00:07:07,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 4 [2023-11-25 00:07:07,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-25 00:07:07,245 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:07,279 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2023-11-25 00:07:07,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 35 [2023-11-25 00:07:07,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-25 00:07:07,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-25 00:07:07,471 INFO L349 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2023-11-25 00:07:07,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 236 treesize of output 201 [2023-11-25 00:07:07,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 4 [2023-11-25 00:07:07,582 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:07,631 INFO L349 Elim1Store]: treesize reduction 43, result has 12.2 percent of original size [2023-11-25 00:07:07,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 78 treesize of output 73 [2023-11-25 00:07:07,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 18 [2023-11-25 00:07:07,786 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-25 00:07:07,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 4 [2023-11-25 00:07:08,321 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse13 (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 8)) (.cse19 (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 16)) (.cse8 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 24))) (and (forall ((v_arrayElimArr_6 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_ArrVal_175 Int) (v_prenex_1 Int)) (or (forall ((v_subst_4 Int) (v_subst_3 Int)) (or (forall ((v_arrayElimArr_8 (Array Int Int))) (or (not (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_8))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3) 0)) (forall ((v_DerPreprocessor_88 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_87 Int) (v_subst_1 Int)) (let ((.cse5 (store (store (store v_arrayElimArr_8 v_subst_3 v_DerPreprocessor_87) v_subst_4 v_DerPreprocessor_88) v_subst_1 v_DerPreprocessor_89))) (let ((.cse4 (select .cse5 v_subst_3)) (.cse6 (select .cse5 v_subst_4))) (or (not (= v_DerPreprocessor_87 .cse4)) (not (= (store (store v_arrayElimArr_8 v_subst_3 .cse4) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse5)) (not (= v_DerPreprocessor_88 .cse6)) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse6)))))) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_8 v_subst_3))))) (= v_subst_4 v_subst_3))) (not (= (select (select (let ((.cse7 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse7 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_prenex_1))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3) 0)) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (or (not (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base| 0)) (not (= |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset| 0))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (v_arrayElimArr_8 (Array Int Int)) (v_DerPreprocessor_22 Int) (v_DerPreprocessor_39 Int) (v_DerPreprocessor_37 Int) (v_DerPreprocessor_38 Int) (v_subst_6 Int) (v_subst_5 Int) (v_subst_4 Int) (v_DerPreprocessor_21 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_1 Int)) (let ((.cse9 (store (store (store v_arrayElimArr_6 v_subst_6 v_DerPreprocessor_37) v_subst_5 v_DerPreprocessor_38) v_subst_4 v_DerPreprocessor_39))) (or (not (= (select .cse9 v_subst_5) v_DerPreprocessor_38)) (not (= (select (select (let ((.cse10 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_8))) (store .cse10 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse10 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3) 0)) (not (= (select (select (let ((.cse11 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse11 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse11 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_prenex_1))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3) 0)) (not (= (store v_arrayElimArr_6 v_subst_4 v_DerPreprocessor_39) .cse9)) (not (= v_DerPreprocessor_37 (select .cse9 v_subst_6))) (not (= v_DerPreprocessor_21 (select (store (store v_arrayElimArr_6 v_subst_4 v_DerPreprocessor_21) v_subst_6 v_DerPreprocessor_22) v_subst_4))) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_8 v_subst_4)))))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_9 (Array Int Int)) (v_subst_1 Int)) (or (not (= (select v_arrayElimArr_9 v_subst_1) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) (= (select (select (let ((.cse12 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_9))) (store .cse12 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse12 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse13) 0))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_arrayElimArr_6 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_ArrVal_175 Int) (v_prenex_1 Int)) (or (forall ((v_subst_4 Int) (v_subst_3 Int)) (or (forall ((v_arrayElimArr_8 (Array Int Int))) (or (not (= (select (select (let ((.cse14 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_8))) (store .cse14 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse14 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3) 0)) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_8 v_subst_3))) (forall ((v_DerPreprocessor_88 Int) (v_DerPreprocessor_89 Int) (v_DerPreprocessor_87 Int) (v_subst_1 Int)) (let ((.cse16 (store (store (store v_arrayElimArr_8 v_subst_3 v_DerPreprocessor_87) v_subst_4 v_DerPreprocessor_88) v_subst_1 v_DerPreprocessor_89))) (let ((.cse15 (select .cse16 v_subst_3))) (or (= v_subst_4 v_subst_1) (not (= v_DerPreprocessor_87 .cse15)) (not (= (store (store v_arrayElimArr_8 v_subst_3 .cse15) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse16)))))))) (= v_subst_4 v_subst_3))) (not (= (select (select (let ((.cse17 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse17 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse17 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_prenex_1))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3) 0)) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_5 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_3 Int)) (= (select (select (let ((.cse18 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_5))) (store .cse18 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse18 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_prenex_3))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse19) 0)) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_DerPreprocessor_68 Int) (v_arrayElimArr_10 (Array Int Int)) (v_subst_2 Int) (v_subst_1 Int)) (or (not (= v_DerPreprocessor_68 (select (store (store v_arrayElimArr_10 v_subst_2 v_DerPreprocessor_68) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) v_subst_2))) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_10 v_subst_2))) (= (select (select (let ((.cse20 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_10))) (store .cse20 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse20 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse19) 0))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_10 (Array Int Int)) (v_subst_2 Int)) (or (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_10 v_subst_2))) (= (select (select (let ((.cse21 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_10))) (store .cse21 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse21 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse19) 0))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_arrayElimArr_3 (Array Int Int)) (v_ArrVal_182 Int)) (not (= (select (select (let ((.cse22 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_3))) (store .cse22 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse22 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_182))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|) 0))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_DerPreprocessor_79 Int) (v_arrayElimArr_7 (Array Int Int)) (v_subst_4 Int) (v_subst_1 Int)) (or (not (= (select (select (let ((.cse23 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_7))) (store .cse23 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse23 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.offset|) 0)) (not (= v_DerPreprocessor_79 (select (store (store v_arrayElimArr_7 v_subst_4 v_DerPreprocessor_79) v_subst_1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) v_subst_4))) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_7 v_subst_4))))))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (forall ((v_arrayElimArr_6 (Array Int Int)) (v_arrayElimArr_8 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_1 Int) (v_subst_4 Int) (v_subst_3 Int) (v_DerPreprocessor_62 Int) (v_DerPreprocessor_63 Int)) (or (not (= (select (select (let ((.cse24 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_8))) (store .cse24 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse24 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3) 0)) (not (= (select (select (let ((.cse25 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse25 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse25 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_prenex_1))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3) 0)) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_8 v_subst_3))) (not (= v_DerPreprocessor_62 (select (store (store v_arrayElimArr_6 v_subst_3 v_DerPreprocessor_62) v_subst_4 v_DerPreprocessor_63) v_subst_3))))) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_5 Int) (v_arrayElimArr_4 (Array Int Int)) (v_DerPreprocessor_60 Int) (v_subst_5 Int) (v_DerPreprocessor_61 Int) (v_subst_4 Int)) (or (not (= v_DerPreprocessor_60 (select (store (store v_arrayElimArr_4 v_subst_5 v_DerPreprocessor_60) v_subst_4 v_DerPreprocessor_61) v_subst_5))) (= (select (select (let ((.cse26 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_4))) (store .cse26 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse26 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_prenex_5))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse13) 0))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)))) (forall ((v_ArrVal_175 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_10 (Array Int Int)) (v_subst_4 Int)) (or (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_10 v_subst_4))) (= (select (select (let ((.cse27 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_10))) (store .cse27 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse27 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse19) 0))))) (forall ((v_arrayElimArr_10 (Array Int Int)) (v_ArrVal_175 Int) (v_subst_2 Int)) (or (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_10 v_subst_2))) (= (select (select (let ((.cse28 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_10))) (store .cse28 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse28 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse19) 0))) (forall ((v_ArrVal_175 Int)) (or (forall ((v_arrayElimArr_6 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16| Int) (v_prenex_1 Int)) (not (= (select (select (let ((.cse29 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse8 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~node~0#1.offset_16|)) v_ArrVal_175 v_arrayElimArr_6))) (store .cse29 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse29 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_prenex_1))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3) 0))) (= v_ArrVal_175 0) (< |c_#StackHeapBarrier| (+ v_ArrVal_175 1)) (forall ((v_arrayElimArr_8 (Array Int Int)) (v_subst_5 Int)) (or (not (= (select (select (let ((.cse30 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store .cse2 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_175)) v_ArrVal_175 v_arrayElimArr_8))) (store .cse30 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse30 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_175))) |c_ULTIMATE.start_aws_linked_list_begin_harness_~#list~0#1.base|) .cse3) 0)) (not (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (select v_arrayElimArr_8 v_subst_5))))))))) is different from false [2023-11-25 00:07:09,845 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2023-11-25 00:07:09,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 116 treesize of output 144 [2023-11-25 00:07:09,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:07:09,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 230 treesize of output 204 [2023-11-25 00:07:09,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:07:09,913 INFO L378 Elim1Store]: Elim1 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 171 treesize of output 167 [2023-11-25 00:07:09,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-25 00:07:10,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:07:10,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 79 [2023-11-25 00:07:10,215 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:07:10,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:07:10,231 INFO L378 Elim1Store]: Elim1 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 46 [2023-11-25 00:07:10,238 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2023-11-25 00:07:10,248 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,252 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,260 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-25 00:07:10,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 24 treesize of output 15 [2023-11-25 00:07:10,269 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,270 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,278 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-25 00:07:10,289 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,290 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,294 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-25 00:07:10,298 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:07:10,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,304 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,308 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-25 00:07:10,313 INFO L378 Elim1Store]: Elim1 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-25 00:07:10,320 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,325 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-25 00:07:10,329 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:07:10,334 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,335 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,340 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-25 00:07:10,340 INFO L378 Elim1Store]: Elim1 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-25 00:07:10,344 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:07:10,350 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,351 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,355 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-25 00:07:10,355 INFO L378 Elim1Store]: Elim1 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-25 00:07:10,363 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,363 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,367 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-25 00:07:10,372 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:07:10,377 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,378 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,382 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-25 00:07:10,383 INFO L378 Elim1Store]: Elim1 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-25 00:07:10,387 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:07:10,392 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,392 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,398 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-25 00:07:10,398 INFO L378 Elim1Store]: Elim1 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2023-11-25 00:07:10,405 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,406 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,410 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-25 00:07:10,415 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,416 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:10,419 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-25 00:07:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 1 not checked. [2023-11-25 00:07:10,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164609555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:07:10,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [515377736] [2023-11-25 00:07:10,558 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-25 00:07:10,558 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:07:10,562 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:07:10,567 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:07:10,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:07:13,929 INFO L197 IcfgInterpreter]: Interpreting procedure aws_linked_list_is_valid with input of size 105 for LOIs [2023-11-25 00:07:14,049 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 6 for LOIs [2023-11-25 00:07:14,051 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 94 for LOIs [2023-11-25 00:07:14,070 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:07:17,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [515377736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:17,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-25 00:07:17,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 10, 9] total 30 [2023-11-25 00:07:17,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025249103] [2023-11-25 00:07:17,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:17,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-25 00:07:17,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:07:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-25 00:07:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=724, Unknown=2, NotChecked=54, Total=870 [2023-11-25 00:07:17,941 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-25 00:07:21,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-25 00:07:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:22,626 INFO L93 Difference]: Finished difference Result 144 states and 188 transitions. [2023-11-25 00:07:22,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-25 00:07:22,629 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2023-11-25 00:07:22,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:22,632 INFO L225 Difference]: With dead ends: 144 [2023-11-25 00:07:22,632 INFO L226 Difference]: Without dead ends: 105 [2023-11-25 00:07:22,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=117, Invalid=941, Unknown=2, NotChecked=62, Total=1122 [2023-11-25 00:07:22,635 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:22,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 243 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 257 Invalid, 2 Unknown, 0 Unchecked, 3.5s Time] [2023-11-25 00:07:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-25 00:07:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2023-11-25 00:07:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.328125) internal successors, (85), 66 states have internal predecessors, (85), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-25 00:07:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 135 transitions. [2023-11-25 00:07:22,672 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 135 transitions. Word has length 38 [2023-11-25 00:07:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:22,672 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 135 transitions. [2023-11-25 00:07:22,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-25 00:07:22,673 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 135 transitions. [2023-11-25 00:07:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-25 00:07:22,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:22,675 INFO L195 NwaCegarLoop]: 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] [2023-11-25 00:07:22,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75b52f2a-a940-430f-9ba8-5b081436be92/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0