./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/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_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/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_1df27698-479d-4a92-9c92-68e54e8c877c/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 30b65818a1a5f98b95f4d6debf739e0d8660272b87140bdcdb24cc42ca73261b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:50:54,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:50:54,083 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:50:54,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:50:54,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:50:54,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:50:54,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:50:54,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:50:54,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:50:54,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:50:54,121 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:50:54,122 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:50:54,122 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:50:54,123 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:50:54,123 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:50:54,124 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:50:54,125 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:50:54,125 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:50:54,126 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:50:54,127 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:50:54,127 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:50:54,135 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:50:54,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:50:54,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:50:54,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:50:54,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:50:54,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:50:54,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:50:54,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:50:54,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:50:54,141 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:50:54,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:50:54,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:50:54,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:50:54,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:54,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:50:54,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:50:54,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:50:54,144 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:50:54,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:50:54,145 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:50:54,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:50:54,145 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:50:54,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:50:54,146 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_1df27698-479d-4a92-9c92-68e54e8c877c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30b65818a1a5f98b95f4d6debf739e0d8660272b87140bdcdb24cc42ca73261b [2023-11-24 23:50:54,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:50:54,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:50:54,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:50:54,494 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:50:54,495 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:50:54,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness_negated.i [2023-11-24 23:50:57,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:50:58,388 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:50:58,388 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness_negated.i [2023-11-24 23:50:58,433 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/data/efd881739/782c71cb41964627a702e489723f8dac/FLAG33ecd10ab [2023-11-24 23:50:58,454 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/data/efd881739/782c71cb41964627a702e489723f8dac [2023-11-24 23:50:58,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:50:58,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:50:58,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:58,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:50:58,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:50:58,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:58" (1/1) ... [2023-11-24 23:50:58,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7443bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:58, skipping insertion in model container [2023-11-24 23:50:58,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:58" (1/1) ... [2023-11-24 23:50:58,632 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:50:58,998 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_1df27698-479d-4a92-9c92-68e54e8c877c/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness_negated.i[4503,4516] [2023-11-24 23:50:59,009 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_1df27698-479d-4a92-9c92-68e54e8c877c/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness_negated.i[4563,4576] [2023-11-24 23:51:00,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:00,551 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:00,553 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:00,554 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:00,558 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:00,585 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:00,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:00,588 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:00,589 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,183 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:51:01,185 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:51:01,186 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:51:01,188 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:51:01,189 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:51:01,190 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:51:01,191 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:51:01,192 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:51:01,193 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:51:01,194 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:51:01,691 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,691 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:01,881 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:51:01,906 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_1df27698-479d-4a92-9c92-68e54e8c877c/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness_negated.i[4503,4516] [2023-11-24 23:51:01,908 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_1df27698-479d-4a92-9c92-68e54e8c877c/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_up_to_harness_negated.i[4563,4576] [2023-11-24 23:51:01,944 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,944 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,945 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,945 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,946 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,952 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,953 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,954 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,954 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:01,987 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:51:01,988 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:51:01,989 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:51:01,990 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:51:01,991 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:51:01,991 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:51:01,991 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:51:01,992 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:51:01,992 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:51:01,993 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:51:02,086 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-24 23:51:02,087 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:02,088 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:51:02,137 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8957-8968] [2023-11-24 23:51:02,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:02,479 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,480 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,480 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,480 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,480 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,480 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,481 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,481 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,481 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,481 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,481 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,481 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,482 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,482 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,482 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,482 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,482 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,483 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:02,490 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:51:02,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02 WrapperNode [2023-11-24 23:51:02,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:02,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:02,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:51:02,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:51:02,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,756 INFO L138 Inliner]: procedures = 694, calls = 2940, calls flagged for inlining = 60, calls inlined = 11, statements flattened = 1215 [2023-11-24 23:51:02,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:02,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:51:02,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:51:02,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:51:02,769 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:51:02,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:51:02,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:51:02,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:51:02,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (1/1) ... [2023-11-24 23:51:02,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:02,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:02,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:51:02,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:51:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-24 23:51:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-24 23:51:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2023-11-24 23:51:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2023-11-24 23:51:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:51:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:51:03,011 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:51:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2023-11-24 23:51:03,012 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2023-11-24 23:51:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:51:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:51:03,013 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:51:03,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:51:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:51:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:51:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:51:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:51:03,014 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2023-11-24 23:51:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2023-11-24 23:51:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:51:03,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:51:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:51:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:51:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-24 23:51:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-24 23:51:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2023-11-24 23:51:03,016 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2023-11-24 23:51:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:51:03,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:51:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_empty_array [2023-11-24 23:51:03,018 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_empty_array [2023-11-24 23:51:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:51:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:51:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:51:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2023-11-24 23:51:03,019 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2023-11-24 23:51:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure is_front_valid_state [2023-11-24 23:51:03,019 INFO L138 BoogieDeclarations]: Found implementation of procedure is_front_valid_state [2023-11-24 23:51:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:51:03,020 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:51:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2023-11-24 23:51:03,020 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2023-11-24 23:51:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2023-11-24 23:51:03,021 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2023-11-24 23:51:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:51:03,021 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:51:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:51:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2023-11-24 23:51:03,022 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2023-11-24 23:51:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2023-11-24 23:51:03,022 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2023-11-24 23:51:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2023-11-24 23:51:03,022 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2023-11-24 23:51:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2023-11-24 23:51:03,023 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2023-11-24 23:51:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:51:03,428 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:51:03,432 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:51:05,401 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:51:05,835 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:51:05,836 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:51:05,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:05 BoogieIcfgContainer [2023-11-24 23:51:05,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:51:05,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:51:05,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:51:05,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:51:05,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:50:58" (1/3) ... [2023-11-24 23:51:05,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d828cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:05, skipping insertion in model container [2023-11-24 23:51:05,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:02" (2/3) ... [2023-11-24 23:51:05,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d828cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:05, skipping insertion in model container [2023-11-24 23:51:05,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:05" (3/3) ... [2023-11-24 23:51:05,855 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_acquire_up_to_harness_negated.i [2023-11-24 23:51:05,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:51:05,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:51:05,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:51:05,971 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;@5216f2ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:51:05,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:51:05,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 171 states have (on average 1.1637426900584795) internal successors, (199), 173 states have internal predecessors, (199), 159 states have call successors, (159), 21 states have call predecessors, (159), 21 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-11-24 23:51:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-24 23:51:05,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:05,996 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:05,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:06,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:06,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2038903766, now seen corresponding path program 1 times [2023-11-24 23:51:06,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:06,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722781396] [2023-11-24 23:51:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 23:51:07,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722781396] [2023-11-24 23:51:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722781396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:07,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:07,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:51:07,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488527903] [2023-11-24 23:51:07,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:07,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:51:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:07,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:51:07,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:51:07,666 INFO L87 Difference]: Start difference. First operand has 354 states, 171 states have (on average 1.1637426900584795) internal successors, (199), 173 states have internal predecessors, (199), 159 states have call successors, (159), 21 states have call predecessors, (159), 21 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:51:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:08,710 INFO L93 Difference]: Finished difference Result 692 states and 1118 transitions. [2023-11-24 23:51:08,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:08,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 61 [2023-11-24 23:51:08,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:08,728 INFO L225 Difference]: With dead ends: 692 [2023-11-24 23:51:08,729 INFO L226 Difference]: Without dead ends: 363 [2023-11-24 23:51:08,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:51:08,754 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 26 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:08,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2859 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:51:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-24 23:51:08,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2023-11-24 23:51:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 178 states have (on average 1.1629213483146068) internal successors, (207), 180 states have internal predecessors, (207), 160 states have call successors, (160), 23 states have call predecessors, (160), 23 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-11-24 23:51:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 526 transitions. [2023-11-24 23:51:08,854 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 526 transitions. Word has length 61 [2023-11-24 23:51:08,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:08,855 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 526 transitions. [2023-11-24 23:51:08,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-24 23:51:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 526 transitions. [2023-11-24 23:51:08,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 23:51:08,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:08,860 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:08,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:51:08,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:08,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash -335001316, now seen corresponding path program 1 times [2023-11-24 23:51:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:08,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400584712] [2023-11-24 23:51:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:08,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:51:09,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:09,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400584712] [2023-11-24 23:51:09,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400584712] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:09,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565241117] [2023-11-24 23:51:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:09,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:09,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:09,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:09,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:51:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:10,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:51:10,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-24 23:51:10,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:10,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565241117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:10,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:10,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-24 23:51:10,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055420500] [2023-11-24 23:51:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:10,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:51:10,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:10,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:51:10,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:51:10,567 INFO L87 Difference]: Start difference. First operand 363 states and 526 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-24 23:51:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:11,261 INFO L93 Difference]: Finished difference Result 378 states and 544 transitions. [2023-11-24 23:51:11,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:11,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 91 [2023-11-24 23:51:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:11,268 INFO L225 Difference]: With dead ends: 378 [2023-11-24 23:51:11,268 INFO L226 Difference]: Without dead ends: 375 [2023-11-24 23:51:11,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-24 23:51:11,270 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 24 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:11,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2891 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:51:11,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-24 23:51:11,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-11-24 23:51:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 187 states have (on average 1.1764705882352942) internal successors, (220), 189 states have internal predecessors, (220), 161 states have call successors, (161), 25 states have call predecessors, (161), 25 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2023-11-24 23:51:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 541 transitions. [2023-11-24 23:51:11,313 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 541 transitions. Word has length 91 [2023-11-24 23:51:11,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:11,314 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 541 transitions. [2023-11-24 23:51:11,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-24 23:51:11,315 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 541 transitions. [2023-11-24 23:51:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-24 23:51:11,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:11,327 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:11,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:11,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:11,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:11,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash 84838639, now seen corresponding path program 1 times [2023-11-24 23:51:11,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:11,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310398945] [2023-11-24 23:51:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:11,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:12,622 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-24 23:51:12,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:12,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310398945] [2023-11-24 23:51:12,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310398945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:12,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999535898] [2023-11-24 23:51:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:12,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:12,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:12,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:12,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:51:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:13,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 3215 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:51:13,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-24 23:51:13,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999535898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:13,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:13,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-24 23:51:13,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601516743] [2023-11-24 23:51:13,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:13,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:51:13,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:13,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:51:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:51:13,595 INFO L87 Difference]: Start difference. First operand 375 states and 541 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-24 23:51:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:14,208 INFO L93 Difference]: Finished difference Result 673 states and 975 transitions. [2023-11-24 23:51:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:14,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 208 [2023-11-24 23:51:14,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:14,214 INFO L225 Difference]: With dead ends: 673 [2023-11-24 23:51:14,214 INFO L226 Difference]: Without dead ends: 384 [2023-11-24 23:51:14,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-24 23:51:14,217 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 15 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:14,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2895 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:51:14,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-24 23:51:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2023-11-24 23:51:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 193 states have (on average 1.1761658031088082) internal successors, (227), 195 states have internal predecessors, (227), 162 states have call successors, (162), 27 states have call predecessors, (162), 27 states have return successors, (161), 161 states have call predecessors, (161), 161 states have call successors, (161) [2023-11-24 23:51:14,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 550 transitions. [2023-11-24 23:51:14,253 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 550 transitions. Word has length 208 [2023-11-24 23:51:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:14,255 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 550 transitions. [2023-11-24 23:51:14,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-11-24 23:51:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 550 transitions. [2023-11-24 23:51:14,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-24 23:51:14,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:14,259 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:14,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:14,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:14,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:14,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1855854782, now seen corresponding path program 1 times [2023-11-24 23:51:14,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:14,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770393357] [2023-11-24 23:51:14,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:14,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-24 23:51:15,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:15,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770393357] [2023-11-24 23:51:15,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770393357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:15,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480587145] [2023-11-24 23:51:15,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:15,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:15,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:15,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:15,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:51:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:16,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 3256 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:51:16,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-24 23:51:16,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:16,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480587145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:16,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:16,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-11-24 23:51:16,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532897026] [2023-11-24 23:51:16,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:16,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:51:16,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:16,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:51:16,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:51:16,461 INFO L87 Difference]: Start difference. First operand 384 states and 550 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:17,283 INFO L93 Difference]: Finished difference Result 757 states and 1091 transitions. [2023-11-24 23:51:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:17,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 214 [2023-11-24 23:51:17,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:17,290 INFO L225 Difference]: With dead ends: 757 [2023-11-24 23:51:17,291 INFO L226 Difference]: Without dead ends: 396 [2023-11-24 23:51:17,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:51:17,294 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 6 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:17,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2345 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:51:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-24 23:51:17,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 392. [2023-11-24 23:51:17,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 198 states have (on average 1.1666666666666667) internal successors, (231), 200 states have internal predecessors, (231), 163 states have call successors, (163), 29 states have call predecessors, (163), 29 states have return successors, (163), 162 states have call predecessors, (163), 162 states have call successors, (163) [2023-11-24 23:51:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 557 transitions. [2023-11-24 23:51:17,325 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 557 transitions. Word has length 214 [2023-11-24 23:51:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:17,326 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 557 transitions. [2023-11-24 23:51:17,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 557 transitions. [2023-11-24 23:51:17,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-24 23:51:17,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:17,330 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:17,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:17,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:17,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:17,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:17,543 INFO L85 PathProgramCache]: Analyzing trace with hash -945121888, now seen corresponding path program 1 times [2023-11-24 23:51:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:17,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855290782] [2023-11-24 23:51:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:17,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-24 23:51:18,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:18,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855290782] [2023-11-24 23:51:18,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855290782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:18,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657766250] [2023-11-24 23:51:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:18,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:18,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:18,571 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:18,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:51:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:19,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 3260 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:51:19,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-24 23:51:19,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:19,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657766250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:19,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:19,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-24 23:51:19,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044729122] [2023-11-24 23:51:19,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:19,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:51:19,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:19,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:51:19,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:51:19,671 INFO L87 Difference]: Start difference. First operand 392 states and 557 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:20,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:20,439 INFO L93 Difference]: Finished difference Result 767 states and 1090 transitions. [2023-11-24 23:51:20,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:20,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 216 [2023-11-24 23:51:20,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:20,447 INFO L225 Difference]: With dead ends: 767 [2023-11-24 23:51:20,447 INFO L226 Difference]: Without dead ends: 396 [2023-11-24 23:51:20,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:51:20,451 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 18 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:20,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2322 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:51:20,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-24 23:51:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2023-11-24 23:51:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 199 states have (on average 1.1608040201005025) internal successors, (231), 202 states have internal predecessors, (231), 163 states have call successors, (163), 29 states have call predecessors, (163), 30 states have return successors, (164), 162 states have call predecessors, (164), 162 states have call successors, (164) [2023-11-24 23:51:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 558 transitions. [2023-11-24 23:51:20,489 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 558 transitions. Word has length 216 [2023-11-24 23:51:20,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:20,490 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 558 transitions. [2023-11-24 23:51:20,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 558 transitions. [2023-11-24 23:51:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-24 23:51:20,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:20,496 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:20,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-24 23:51:20,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:20,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:20,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1138822662, now seen corresponding path program 1 times [2023-11-24 23:51:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71610896] [2023-11-24 23:51:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:20,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-24 23:51:21,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:21,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71610896] [2023-11-24 23:51:21,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71610896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:21,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864436172] [2023-11-24 23:51:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:21,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:21,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:21,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:21,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:51:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:22,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 3264 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:51:22,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-24 23:51:22,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:22,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864436172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:22,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:22,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-24 23:51:22,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565108524] [2023-11-24 23:51:22,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:22,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:51:22,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:22,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:51:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:51:22,860 INFO L87 Difference]: Start difference. First operand 394 states and 558 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:23,527 INFO L93 Difference]: Finished difference Result 769 states and 1090 transitions. [2023-11-24 23:51:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:23,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 218 [2023-11-24 23:51:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:23,532 INFO L225 Difference]: With dead ends: 769 [2023-11-24 23:51:23,532 INFO L226 Difference]: Without dead ends: 398 [2023-11-24 23:51:23,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:51:23,535 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 16 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:23,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2786 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:51:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-11-24 23:51:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2023-11-24 23:51:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 199 states have (on average 1.1557788944723617) internal successors, (230), 202 states have internal predecessors, (230), 163 states have call successors, (163), 29 states have call predecessors, (163), 30 states have return successors, (164), 162 states have call predecessors, (164), 162 states have call successors, (164) [2023-11-24 23:51:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 557 transitions. [2023-11-24 23:51:23,562 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 557 transitions. Word has length 218 [2023-11-24 23:51:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:23,562 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 557 transitions. [2023-11-24 23:51:23,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 557 transitions. [2023-11-24 23:51:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-24 23:51:23,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:23,566 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:23,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:23,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:23,777 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:23,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:23,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1682775904, now seen corresponding path program 1 times [2023-11-24 23:51:23,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:23,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63980768] [2023-11-24 23:51:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:23,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-24 23:51:24,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:24,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63980768] [2023-11-24 23:51:24,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63980768] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:24,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850471064] [2023-11-24 23:51:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:24,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:24,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:24,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:24,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:51:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:25,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 3268 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:51:25,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-24 23:51:25,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:25,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850471064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:25,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:25,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-24 23:51:25,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507897342] [2023-11-24 23:51:25,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:25,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:51:25,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:25,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:51:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:51:25,673 INFO L87 Difference]: Start difference. First operand 394 states and 557 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:26,232 INFO L93 Difference]: Finished difference Result 769 states and 1088 transitions. [2023-11-24 23:51:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:26,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 220 [2023-11-24 23:51:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:26,237 INFO L225 Difference]: With dead ends: 769 [2023-11-24 23:51:26,237 INFO L226 Difference]: Without dead ends: 398 [2023-11-24 23:51:26,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:51:26,240 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 18 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:26,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2316 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:51:26,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-11-24 23:51:26,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2023-11-24 23:51:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 199 states have (on average 1.150753768844221) internal successors, (229), 202 states have internal predecessors, (229), 163 states have call successors, (163), 29 states have call predecessors, (163), 30 states have return successors, (164), 162 states have call predecessors, (164), 162 states have call successors, (164) [2023-11-24 23:51:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 556 transitions. [2023-11-24 23:51:26,266 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 556 transitions. Word has length 220 [2023-11-24 23:51:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:26,267 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 556 transitions. [2023-11-24 23:51:26,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 556 transitions. [2023-11-24 23:51:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-11-24 23:51:26,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:26,271 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:26,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:26,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:26,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:26,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:26,484 INFO L85 PathProgramCache]: Analyzing trace with hash 520130226, now seen corresponding path program 1 times [2023-11-24 23:51:26,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:26,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340933556] [2023-11-24 23:51:26,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:26,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-24 23:51:27,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:27,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340933556] [2023-11-24 23:51:27,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340933556] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:27,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320981763] [2023-11-24 23:51:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:27,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:27,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:27,820 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:27,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:51:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:28,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 3272 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:51:28,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-24 23:51:28,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:28,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320981763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:28,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:28,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 11 [2023-11-24 23:51:28,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589017376] [2023-11-24 23:51:28,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:28,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:51:28,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:51:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:51:28,804 INFO L87 Difference]: Start difference. First operand 394 states and 556 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-11-24 23:51:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:29,400 INFO L93 Difference]: Finished difference Result 751 states and 1100 transitions. [2023-11-24 23:51:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:29,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 222 [2023-11-24 23:51:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:29,404 INFO L225 Difference]: With dead ends: 751 [2023-11-24 23:51:29,405 INFO L226 Difference]: Without dead ends: 394 [2023-11-24 23:51:29,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:51:29,408 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 6 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:29,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2388 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:51:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-24 23:51:29,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2023-11-24 23:51:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 198 states have (on average 1.1363636363636365) internal successors, (225), 200 states have internal predecessors, (225), 163 states have call successors, (163), 29 states have call predecessors, (163), 29 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-11-24 23:51:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 550 transitions. [2023-11-24 23:51:29,461 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 550 transitions. Word has length 222 [2023-11-24 23:51:29,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:29,462 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 550 transitions. [2023-11-24 23:51:29,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2023-11-24 23:51:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 550 transitions. [2023-11-24 23:51:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-11-24 23:51:29,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:29,470 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:29,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:29,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:29,682 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:29,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash 786361324, now seen corresponding path program 1 times [2023-11-24 23:51:29,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:29,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117274869] [2023-11-24 23:51:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:29,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-11-24 23:51:31,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117274869] [2023-11-24 23:51:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117274869] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557927024] [2023-11-24 23:51:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:31,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:31,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:31,167 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:31,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:51:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:32,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 3408 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:51:32,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-24 23:51:32,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:32,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557927024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:32,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:32,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-24 23:51:32,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319244631] [2023-11-24 23:51:32,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:32,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:51:32,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:32,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:51:32,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:51:32,208 INFO L87 Difference]: Start difference. First operand 392 states and 550 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:32,819 INFO L93 Difference]: Finished difference Result 741 states and 1080 transitions. [2023-11-24 23:51:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:32,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 254 [2023-11-24 23:51:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:32,824 INFO L225 Difference]: With dead ends: 741 [2023-11-24 23:51:32,824 INFO L226 Difference]: Without dead ends: 392 [2023-11-24 23:51:32,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:51:32,827 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 16 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:32,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2833 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:51:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-11-24 23:51:32,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2023-11-24 23:51:32,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 198 states have (on average 1.1313131313131313) internal successors, (224), 200 states have internal predecessors, (224), 163 states have call successors, (163), 29 states have call predecessors, (163), 29 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-11-24 23:51:32,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 549 transitions. [2023-11-24 23:51:32,851 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 549 transitions. Word has length 254 [2023-11-24 23:51:32,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:32,852 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 549 transitions. [2023-11-24 23:51:32,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:32,852 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 549 transitions. [2023-11-24 23:51:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-24 23:51:32,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:32,856 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:32,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:33,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:33,068 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:33,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:33,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1495747756, now seen corresponding path program 1 times [2023-11-24 23:51:33,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:33,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767548657] [2023-11-24 23:51:33,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:33,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 5 proven. 104 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-24 23:51:34,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:34,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767548657] [2023-11-24 23:51:34,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767548657] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:34,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168784593] [2023-11-24 23:51:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:34,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:34,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:34,327 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:34,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:51:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:35,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:51:35,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-24 23:51:35,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:35,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168784593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:35,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:35,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-24 23:51:35,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692965445] [2023-11-24 23:51:35,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:35,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:51:35,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:35,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:51:35,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:51:35,452 INFO L87 Difference]: Start difference. First operand 392 states and 549 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:35,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:35,931 INFO L93 Difference]: Finished difference Result 743 states and 1080 transitions. [2023-11-24 23:51:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:35,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 260 [2023-11-24 23:51:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:35,936 INFO L225 Difference]: With dead ends: 743 [2023-11-24 23:51:35,936 INFO L226 Difference]: Without dead ends: 394 [2023-11-24 23:51:35,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:51:35,939 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 15 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:35,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2829 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:51:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-24 23:51:35,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2023-11-24 23:51:35,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 198 states have (on average 1.1262626262626263) internal successors, (223), 200 states have internal predecessors, (223), 163 states have call successors, (163), 29 states have call predecessors, (163), 29 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-11-24 23:51:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 548 transitions. [2023-11-24 23:51:35,965 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 548 transitions. Word has length 260 [2023-11-24 23:51:35,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:35,965 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 548 transitions. [2023-11-24 23:51:35,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 548 transitions. [2023-11-24 23:51:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-24 23:51:35,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:35,970 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:35,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:36,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:36,188 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:36,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:36,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1148953068, now seen corresponding path program 1 times [2023-11-24 23:51:36,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:36,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120720628] [2023-11-24 23:51:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:36,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 6 proven. 114 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-11-24 23:51:37,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:37,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120720628] [2023-11-24 23:51:37,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120720628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:37,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143144562] [2023-11-24 23:51:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:37,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:37,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:37,535 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:37,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:51:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:38,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 3432 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:51:38,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-11-24 23:51:38,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:38,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143144562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:38,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:51:38,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-24 23:51:38,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411358711] [2023-11-24 23:51:38,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:38,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:51:38,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:51:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:51:38,705 INFO L87 Difference]: Start difference. First operand 392 states and 548 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:39,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:39,326 INFO L93 Difference]: Finished difference Result 743 states and 1078 transitions. [2023-11-24 23:51:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:51:39,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 266 [2023-11-24 23:51:39,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:39,331 INFO L225 Difference]: With dead ends: 743 [2023-11-24 23:51:39,331 INFO L226 Difference]: Without dead ends: 394 [2023-11-24 23:51:39,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:51:39,334 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 14 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:39,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2825 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:51:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-24 23:51:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2023-11-24 23:51:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 198 states have (on average 1.121212121212121) internal successors, (222), 200 states have internal predecessors, (222), 163 states have call successors, (163), 29 states have call predecessors, (163), 29 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2023-11-24 23:51:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 547 transitions. [2023-11-24 23:51:39,358 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 547 transitions. Word has length 266 [2023-11-24 23:51:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:39,358 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 547 transitions. [2023-11-24 23:51:39,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-11-24 23:51:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 547 transitions. [2023-11-24 23:51:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-24 23:51:39,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:39,361 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:39,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:39,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df27698-479d-4a92-9c92-68e54e8c877c/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:51:39,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:39,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1772731172, now seen corresponding path program 1 times [2023-11-24 23:51:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:39,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821759619] [2023-11-24 23:51:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:39,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms