./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.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_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/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_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/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_584f5cfb-4002-4d90-9b9b-f50d43b1703a/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 80528f4a8c519f417b5556e2d2458b4054f2fa1ae1a14cd2db000a7ac77b495e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:49:53,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:49:53,968 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:49:53,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:49:53,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:49:54,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:49:54,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:49:54,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:49:54,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:49:54,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:49:54,025 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:49:54,026 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:49:54,027 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:49:54,029 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:49:54,029 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:49:54,030 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:49:54,030 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:49:54,031 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:49:54,031 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:49:54,032 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:49:54,033 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:49:54,033 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:49:54,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:49:54,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:49:54,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:49:54,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:49:54,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:49:54,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:49:54,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:49:54,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:49:54,040 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:49:54,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:49:54,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:49:54,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:49:54,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:49:54,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:49:54,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:49:54,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:49:54,042 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:49:54,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:49:54,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:49:54,044 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:49:54,044 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:49:54,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:49:54,045 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_584f5cfb-4002-4d90-9b9b-f50d43b1703a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80528f4a8c519f417b5556e2d2458b4054f2fa1ae1a14cd2db000a7ac77b495e [2023-11-24 23:49:54,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:49:54,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:49:54,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:49:54,343 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:49:54,343 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:49:54,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i [2023-11-24 23:49:57,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:49:58,083 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:49:58,083 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i [2023-11-24 23:49:58,129 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/data/4634e69e3/142bf8d6dd0e4da6bed9cbf75d2fc3d1/FLAGcffafcc81 [2023-11-24 23:49:58,150 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/data/4634e69e3/142bf8d6dd0e4da6bed9cbf75d2fc3d1 [2023-11-24 23:49:58,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:49:58,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:49:58,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:49:58,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:49:58,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:49:58,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:49:58" (1/1) ... [2023-11-24 23:49:58,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48bbb210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:49:58, skipping insertion in model container [2023-11-24 23:49:58,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:49:58" (1/1) ... [2023-11-24 23:49:58,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:49:58,614 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_584f5cfb-4002-4d90-9b9b-f50d43b1703a/sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i[4497,4510] [2023-11-24 23:49:58,625 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_584f5cfb-4002-4d90-9b9b-f50d43b1703a/sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i[4557,4570] [2023-11-24 23:49:59,904 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:49:59,906 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:49:59,911 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:49:59,912 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:49:59,914 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:49:59,930 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:49:59,931 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:49:59,933 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:49:59,934 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:00,610 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:50:00,611 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:50:00,613 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:50:00,615 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:50:00,617 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:50:00,618 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:50:00,618 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:50:00,619 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:50:00,621 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:50:00,622 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:50:00,986 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:00,986 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:01,273 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:50:01,289 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_584f5cfb-4002-4d90-9b9b-f50d43b1703a/sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i[4497,4510] [2023-11-24 23:50:01,290 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_584f5cfb-4002-4d90-9b9b-f50d43b1703a/sv-benchmarks/c/aws-c-common/aws_ring_buffer_release_harness.i[4557,4570] [2023-11-24 23:50:01,329 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,330 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,330 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,331 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,379 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:50:01,380 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:50:01,384 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:50:01,385 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:50:01,401 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:50:01,401 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:50:01,402 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:50:01,403 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:50:01,403 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:50:01,404 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:50:01,526 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-24 23:50:01,528 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,530 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:50:01,586 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8995-9006] [2023-11-24 23:50:01,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:50:01,919 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,919 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,919 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,919 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,920 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,920 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,920 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,920 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,920 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,921 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,921 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,921 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,921 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,921 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,921 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,922 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,922 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,922 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:50:01,930 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:50:01,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01 WrapperNode [2023-11-24 23:50:01,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:01,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:01,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:50:01,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:50:01,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,063 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,145 INFO L138 Inliner]: procedures = 694, calls = 2945, calls flagged for inlining = 60, calls inlined = 9, statements flattened = 1012 [2023-11-24 23:50:02,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:50:02,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:50:02,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:50:02,148 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:50:02,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,170 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,170 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,226 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:50:02,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:50:02,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:50:02,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:50:02,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (1/1) ... [2023-11-24 23:50:02,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:02,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:02,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:50:02,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:50:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-24 23:50:02,354 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-24 23:50:02,354 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2023-11-24 23:50:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2023-11-24 23:50:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:50:02,355 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:50:02,356 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:50:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2023-11-24 23:50:02,356 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2023-11-24 23:50:02,356 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member_in_range [2023-11-24 23:50:02,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member_in_range [2023-11-24 23:50:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:50:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure is_empty_state [2023-11-24 23:50:02,357 INFO L138 BoogieDeclarations]: Found implementation of procedure is_empty_state [2023-11-24 23:50:02,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:50:02,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:50:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:50:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:50:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:50:02,360 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2023-11-24 23:50:02,360 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2023-11-24 23:50:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:50:02,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:50:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:50:02,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:50:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2023-11-24 23:50:02,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2023-11-24 23:50:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:50:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:50:02,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:50:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:50:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:50:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:50:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:50:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2023-11-24 23:50:02,365 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2023-11-24 23:50:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:50:02,365 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:50:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2023-11-24 23:50:02,366 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2023-11-24 23:50:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2023-11-24 23:50:02,366 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2023-11-24 23:50:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:50:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:50:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2023-11-24 23:50:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2023-11-24 23:50:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2023-11-24 23:50:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2023-11-24 23:50:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2023-11-24 23:50:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2023-11-24 23:50:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2023-11-24 23:50:02,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2023-11-24 23:50:02,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:50:02,862 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:50:02,865 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:50:04,451 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:50:04,901 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:50:04,902 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:50:04,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:04 BoogieIcfgContainer [2023-11-24 23:50:04,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:50:04,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:50:04,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:50:04,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:50:04,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:49:58" (1/3) ... [2023-11-24 23:50:04,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff3f7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:04, skipping insertion in model container [2023-11-24 23:50:04,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:01" (2/3) ... [2023-11-24 23:50:04,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff3f7a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:50:04, skipping insertion in model container [2023-11-24 23:50:04,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:50:04" (3/3) ... [2023-11-24 23:50:04,919 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_release_harness.i [2023-11-24 23:50:04,942 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:50:04,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:50:05,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:50:05,030 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;@54b528ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:50:05,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:50:05,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 131 states have internal predecessors, (151), 87 states have call successors, (87), 20 states have call predecessors, (87), 20 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-24 23:50:05,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:05,050 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 23:50:05,051 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 23:50:05,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:05,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1645442134, now seen corresponding path program 1 times [2023-11-24 23:50:05,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:05,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517246961] [2023-11-24 23:50:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:50:06,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:06,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517246961] [2023-11-24 23:50:06,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517246961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:06,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:50:06,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:50:06,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64633255] [2023-11-24 23:50:06,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:06,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:50:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:50:06,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:50:06,500 INFO L87 Difference]: Start difference. First operand has 238 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 131 states have internal predecessors, (151), 87 states have call successors, (87), 20 states have call predecessors, (87), 20 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-24 23:50:07,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:07,775 INFO L93 Difference]: Finished difference Result 470 states and 701 transitions. [2023-11-24 23:50:07,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:50:07,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 41 [2023-11-24 23:50:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:07,790 INFO L225 Difference]: With dead ends: 470 [2023-11-24 23:50:07,790 INFO L226 Difference]: Without dead ends: 247 [2023-11-24 23:50:07,797 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 23:50:07,800 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 26 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:07,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1707 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 23:50:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-24 23:50:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-11-24 23:50:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 135 states have (on average 1.162962962962963) internal successors, (157), 138 states have internal predecessors, (157), 88 states have call successors, (88), 22 states have call predecessors, (88), 22 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 332 transitions. [2023-11-24 23:50:07,874 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 332 transitions. Word has length 41 [2023-11-24 23:50:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:07,876 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 332 transitions. [2023-11-24 23:50:07,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-24 23:50:07,876 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 332 transitions. [2023-11-24 23:50:07,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-24 23:50:07,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:07,880 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 23:50:07,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:50:07,880 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 23:50:07,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:07,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1347173532, now seen corresponding path program 1 times [2023-11-24 23:50:07,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:07,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537589624] [2023-11-24 23:50:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:07,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:50:08,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:08,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537589624] [2023-11-24 23:50:08,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537589624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:08,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306435799] [2023-11-24 23:50:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:08,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:08,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:08,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:08,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:50:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:09,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:50:09,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 23:50:09,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:09,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306435799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:09,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:09,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-24 23:50:09,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57816694] [2023-11-24 23:50:09,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:09,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:50:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:09,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:50:09,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:50:09,554 INFO L87 Difference]: Start difference. First operand 247 states and 332 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-24 23:50:10,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:10,434 INFO L93 Difference]: Finished difference Result 258 states and 346 transitions. [2023-11-24 23:50:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:50:10,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 69 [2023-11-24 23:50:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:10,440 INFO L225 Difference]: With dead ends: 258 [2023-11-24 23:50:10,441 INFO L226 Difference]: Without dead ends: 255 [2023-11-24 23:50:10,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 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 23:50:10,443 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 24 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:10,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1733 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:50:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-24 23:50:10,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-11-24 23:50:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1830985915492958) internal successors, (168), 145 states have internal predecessors, (168), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 343 transitions. [2023-11-24 23:50:10,491 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 343 transitions. Word has length 69 [2023-11-24 23:50:10,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:10,492 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 343 transitions. [2023-11-24 23:50:10,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-24 23:50:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 343 transitions. [2023-11-24 23:50:10,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-24 23:50:10,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:10,514 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-11-24 23:50:10,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:10,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:10,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:10,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:10,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1437271355, now seen corresponding path program 1 times [2023-11-24 23:50:10,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:10,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306673056] [2023-11-24 23:50:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:10,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-24 23:50:11,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306673056] [2023-11-24 23:50:11,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306673056] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479768594] [2023-11-24 23:50:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:11,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:11,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:11,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:11,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:50:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:12,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:50:12,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-24 23:50:12,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:12,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479768594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:12,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:12,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-11-24 23:50:12,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059269629] [2023-11-24 23:50:12,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:12,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:12,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:12,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:50:12,490 INFO L87 Difference]: Start difference. First operand 255 states and 343 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:13,272 INFO L93 Difference]: Finished difference Result 503 states and 674 transitions. [2023-11-24 23:50:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:13,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 171 [2023-11-24 23:50:13,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:13,282 INFO L225 Difference]: With dead ends: 503 [2023-11-24 23:50:13,282 INFO L226 Difference]: Without dead ends: 257 [2023-11-24 23:50:13,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 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 23:50:13,288 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 4 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:13,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1419 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:50:13,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-24 23:50:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-11-24 23:50:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1690140845070423) internal successors, (166), 145 states have internal predecessors, (166), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 341 transitions. [2023-11-24 23:50:13,328 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 341 transitions. Word has length 171 [2023-11-24 23:50:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:13,329 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 341 transitions. [2023-11-24 23:50:13,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:13,329 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 341 transitions. [2023-11-24 23:50:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-24 23:50:13,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:13,332 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-11-24 23:50:13,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 23:50:13,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:13,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:13,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1057672625, now seen corresponding path program 1 times [2023-11-24 23:50:13,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:13,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365896439] [2023-11-24 23:50:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:13,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-24 23:50:14,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:14,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365896439] [2023-11-24 23:50:14,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365896439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:14,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340810742] [2023-11-24 23:50:14,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:14,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:14,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:14,344 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:14,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:50:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:15,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 3042 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:50:15,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-24 23:50:15,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:15,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340810742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:15,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:15,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-24 23:50:15,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257535061] [2023-11-24 23:50:15,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:15,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:50:15,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:15,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:50:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:50:15,312 INFO L87 Difference]: Start difference. First operand 255 states and 341 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:16,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:16,818 INFO L93 Difference]: Finished difference Result 503 states and 670 transitions. [2023-11-24 23:50:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:50:16,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 173 [2023-11-24 23:50:16,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:16,823 INFO L225 Difference]: With dead ends: 503 [2023-11-24 23:50:16,823 INFO L226 Difference]: Without dead ends: 257 [2023-11-24 23:50:16,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 169 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 23:50:16,826 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 16 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:16,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1677 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 23:50:16,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-24 23:50:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-11-24 23:50:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1549295774647887) internal successors, (164), 145 states have internal predecessors, (164), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 339 transitions. [2023-11-24 23:50:16,852 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 339 transitions. Word has length 173 [2023-11-24 23:50:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:16,852 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 339 transitions. [2023-11-24 23:50:16,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 339 transitions. [2023-11-24 23:50:16,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-24 23:50:16,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:16,856 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-11-24 23:50:16,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:17,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:17,068 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:17,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1015497421, now seen corresponding path program 1 times [2023-11-24 23:50:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:17,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927625789] [2023-11-24 23:50:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-24 23:50:18,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:18,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927625789] [2023-11-24 23:50:18,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927625789] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:18,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403059191] [2023-11-24 23:50:18,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:18,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:18,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:18,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:18,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:50:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:18,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:50:18,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-24 23:50:19,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:19,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403059191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:19,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:19,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-24 23:50:19,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915848303] [2023-11-24 23:50:19,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:19,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:50:19,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:50:19,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:50:19,112 INFO L87 Difference]: Start difference. First operand 255 states and 339 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:20,271 INFO L93 Difference]: Finished difference Result 501 states and 664 transitions. [2023-11-24 23:50:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:50:20,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 175 [2023-11-24 23:50:20,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:20,276 INFO L225 Difference]: With dead ends: 501 [2023-11-24 23:50:20,276 INFO L226 Difference]: Without dead ends: 259 [2023-11-24 23:50:20,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 171 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 23:50:20,279 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 16 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:20,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1676 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:50:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-24 23:50:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2023-11-24 23:50:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.147887323943662) internal successors, (163), 145 states have internal predecessors, (163), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2023-11-24 23:50:20,303 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 175 [2023-11-24 23:50:20,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:20,304 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2023-11-24 23:50:20,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2023-11-24 23:50:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-24 23:50:20,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:20,308 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-11-24 23:50:20,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:20,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:20,522 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:20,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:20,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1395796687, now seen corresponding path program 1 times [2023-11-24 23:50:20,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:20,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452716635] [2023-11-24 23:50:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-24 23:50:21,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452716635] [2023-11-24 23:50:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452716635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936460880] [2023-11-24 23:50:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:21,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:21,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:21,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:21,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:50:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:22,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:50:22,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-24 23:50:22,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:22,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936460880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:22,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:22,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-24 23:50:22,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124665349] [2023-11-24 23:50:22,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:22,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:50:22,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:22,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:50:22,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:50:22,604 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:23,653 INFO L93 Difference]: Finished difference Result 501 states and 662 transitions. [2023-11-24 23:50:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:50:23,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 177 [2023-11-24 23:50:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:23,657 INFO L225 Difference]: With dead ends: 501 [2023-11-24 23:50:23,657 INFO L226 Difference]: Without dead ends: 259 [2023-11-24 23:50:23,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 173 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 23:50:23,660 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 18 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:23,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1393 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 23:50:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-24 23:50:23,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2023-11-24 23:50:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1408450704225352) internal successors, (162), 145 states have internal predecessors, (162), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 337 transitions. [2023-11-24 23:50:23,678 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 337 transitions. Word has length 177 [2023-11-24 23:50:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:23,679 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 337 transitions. [2023-11-24 23:50:23,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 337 transitions. [2023-11-24 23:50:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-24 23:50:23,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:23,682 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-11-24 23:50:23,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:23,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:23,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:23,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1083004715, now seen corresponding path program 1 times [2023-11-24 23:50:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:23,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263865058] [2023-11-24 23:50:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-11-24 23:50:24,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:24,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263865058] [2023-11-24 23:50:24,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263865058] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:24,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228779659] [2023-11-24 23:50:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:24,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:24,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:24,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:24,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:50:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:25,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:50:25,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-24 23:50:25,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:25,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228779659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:25,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:25,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 11 [2023-11-24 23:50:25,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905370619] [2023-11-24 23:50:25,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:25,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:50:25,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:50:25,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:50:25,948 INFO L87 Difference]: Start difference. First operand 255 states and 337 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:27,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:27,013 INFO L93 Difference]: Finished difference Result 477 states and 665 transitions. [2023-11-24 23:50:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:50:27,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 179 [2023-11-24 23:50:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:27,017 INFO L225 Difference]: With dead ends: 477 [2023-11-24 23:50:27,018 INFO L226 Difference]: Without dead ends: 255 [2023-11-24 23:50:27,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 182 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 23:50:27,021 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 4 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:27,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1434 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 23:50:27,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-24 23:50:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-11-24 23:50:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 145 states have internal predecessors, (161), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 336 transitions. [2023-11-24 23:50:27,048 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 336 transitions. Word has length 179 [2023-11-24 23:50:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:27,049 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 336 transitions. [2023-11-24 23:50:27,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 336 transitions. [2023-11-24 23:50:27,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-24 23:50:27,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:27,053 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-11-24 23:50:27,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:27,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:27,267 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:27,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:27,267 INFO L85 PathProgramCache]: Analyzing trace with hash 714248761, now seen corresponding path program 1 times [2023-11-24 23:50:27,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:27,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004345568] [2023-11-24 23:50:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:27,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 78 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-11-24 23:50:28,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004345568] [2023-11-24 23:50:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004345568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571204027] [2023-11-24 23:50:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:28,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:28,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:28,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:28,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:50:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:29,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:50:29,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-24 23:50:29,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:29,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571204027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:29,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:29,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-24 23:50:29,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139477280] [2023-11-24 23:50:29,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:29,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:50:29,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:29,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:50:29,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:50:29,450 INFO L87 Difference]: Start difference. First operand 255 states and 336 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:30,781 INFO L93 Difference]: Finished difference Result 477 states and 663 transitions. [2023-11-24 23:50:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:50:30,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 185 [2023-11-24 23:50:30,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:30,786 INFO L225 Difference]: With dead ends: 477 [2023-11-24 23:50:30,786 INFO L226 Difference]: Without dead ends: 255 [2023-11-24 23:50:30,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 185 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 23:50:30,791 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 14 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:30,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1406 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:50:30,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-24 23:50:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-11-24 23:50:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1267605633802817) internal successors, (160), 145 states have internal predecessors, (160), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:30,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 335 transitions. [2023-11-24 23:50:30,812 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 335 transitions. Word has length 185 [2023-11-24 23:50:30,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:30,814 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 335 transitions. [2023-11-24 23:50:30,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:30,815 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 335 transitions. [2023-11-24 23:50:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-24 23:50:30,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:30,821 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-11-24 23:50:30,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:31,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:31,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:31,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:31,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1863912595, now seen corresponding path program 1 times [2023-11-24 23:50:31,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:31,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809352122] [2023-11-24 23:50:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 5 proven. 88 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-24 23:50:32,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809352122] [2023-11-24 23:50:32,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809352122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729334412] [2023-11-24 23:50:32,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:32,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:32,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:32,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:32,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:50:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:33,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:50:33,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-24 23:50:33,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:33,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729334412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:33,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:33,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-24 23:50:33,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697692392] [2023-11-24 23:50:33,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:33,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:50:33,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:33,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:50:33,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:50:33,572 INFO L87 Difference]: Start difference. First operand 255 states and 335 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:34,836 INFO L93 Difference]: Finished difference Result 479 states and 663 transitions. [2023-11-24 23:50:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:50:34,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 191 [2023-11-24 23:50:34,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:34,840 INFO L225 Difference]: With dead ends: 479 [2023-11-24 23:50:34,840 INFO L226 Difference]: Without dead ends: 257 [2023-11-24 23:50:34,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 191 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 23:50:34,843 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 12 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:34,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1684 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:50:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-24 23:50:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-11-24 23:50:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.119718309859155) internal successors, (159), 145 states have internal predecessors, (159), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 334 transitions. [2023-11-24 23:50:34,863 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 334 transitions. Word has length 191 [2023-11-24 23:50:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:34,864 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 334 transitions. [2023-11-24 23:50:34,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 334 transitions. [2023-11-24 23:50:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-24 23:50:34,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:34,868 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-11-24 23:50:34,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:35,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:35,084 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:35,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash -973684679, now seen corresponding path program 1 times [2023-11-24 23:50:35,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:35,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103766703] [2023-11-24 23:50:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:35,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 6 proven. 98 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-24 23:50:36,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:50:36,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103766703] [2023-11-24 23:50:36,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103766703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:50:36,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194294744] [2023-11-24 23:50:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:36,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:36,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:50:36,366 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:50:36,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:50:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:50:37,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 3090 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:50:37,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:50:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-24 23:50:37,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:50:37,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194294744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:50:37,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:50:37,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-24 23:50:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949864700] [2023-11-24 23:50:37,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:50:37,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:50:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:50:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:50:37,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:50:37,451 INFO L87 Difference]: Start difference. First operand 255 states and 334 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:50:38,342 INFO L93 Difference]: Finished difference Result 479 states and 661 transitions. [2023-11-24 23:50:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:50:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 197 [2023-11-24 23:50:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:50:38,347 INFO L225 Difference]: With dead ends: 479 [2023-11-24 23:50:38,347 INFO L226 Difference]: Without dead ends: 257 [2023-11-24 23:50:38,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 197 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 23:50:38,350 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 12 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:50:38,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1400 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:50:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-24 23:50:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2023-11-24 23:50:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 142 states have (on average 1.1126760563380282) internal successors, (158), 145 states have internal predecessors, (158), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-24 23:50:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 333 transitions. [2023-11-24 23:50:38,373 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 333 transitions. Word has length 197 [2023-11-24 23:50:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:50:38,374 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 333 transitions. [2023-11-24 23:50:38,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-24 23:50:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 333 transitions. [2023-11-24 23:50:38,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-24 23:50:38,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:50:38,379 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-11-24 23:50:38,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:50:38,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_584f5cfb-4002-4d90-9b9b-f50d43b1703a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:50:38,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:50:38,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:50:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash 658210821, now seen corresponding path program 1 times [2023-11-24 23:50:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:50:38,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511141959] [2023-11-24 23:50:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:50:38,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:50:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat