./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/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_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/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_86f28f19-0af8-406c-a505-b514dc4aa299/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 4e59d9fbf3221e05899a4337354f2c9a73733c9d6b6114c066d75ddd1c55b4e4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:19:04,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:19:04,579 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:19:04,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:19:04,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:19:04,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:19:04,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:19:04,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:19:04,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:19:04,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:19:04,649 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:19:04,650 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:19:04,651 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:19:04,653 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:19:04,653 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:19:04,654 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:19:04,654 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:19:04,655 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:19:04,655 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:19:04,656 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:19:04,657 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:19:04,657 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:19:04,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:19:04,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:19:04,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:19:04,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:19:04,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:19:04,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:19:04,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:19:04,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:19:04,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:19:04,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:19:04,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:19:04,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:19:04,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:19:04,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:19:04,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:19:04,679 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:19:04,679 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:19:04,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:19:04,680 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:19:04,680 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:19:04,681 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:19:04,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:19:04,681 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_86f28f19-0af8-406c-a505-b514dc4aa299/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e59d9fbf3221e05899a4337354f2c9a73733c9d6b6114c066d75ddd1c55b4e4 [2023-11-24 23:19:05,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:19:05,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:19:05,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:19:05,094 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:19:05,094 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:19:05,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i [2023-11-24 23:19:08,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:19:08,757 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:19:08,758 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i [2023-11-24 23:19:08,804 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/data/7da10c5e9/c799d8cb034845e689dac1eb747ef8b2/FLAG16fad85f9 [2023-11-24 23:19:08,819 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/data/7da10c5e9/c799d8cb034845e689dac1eb747ef8b2 [2023-11-24 23:19:08,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:19:08,823 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:19:08,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:19:08,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:19:08,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:19:08,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:19:08" (1/1) ... [2023-11-24 23:19:08,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa7e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:08, skipping insertion in model container [2023-11-24 23:19:08,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:19:08" (1/1) ... [2023-11-24 23:19:08,972 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:19:09,241 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_86f28f19-0af8-406c-a505-b514dc4aa299/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4497,4510] [2023-11-24 23:19:09,250 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_86f28f19-0af8-406c-a505-b514dc4aa299/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4557,4570] [2023-11-24 23:19:10,456 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:10,457 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:10,458 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:10,459 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:10,460 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:10,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:10,478 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:10,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:10,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:11,211 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:19:11,213 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:19:11,214 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:19:11,216 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:19:11,218 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:19:11,219 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:19:11,220 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:19:11,235 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:19:11,236 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:19:11,237 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:19:11,684 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:11,685 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:11,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:19:11,944 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:19:11,971 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_86f28f19-0af8-406c-a505-b514dc4aa299/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4497,4510] [2023-11-24 23:19:11,972 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_86f28f19-0af8-406c-a505-b514dc4aa299/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4557,4570] [2023-11-24 23:19:12,038 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,039 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,039 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,040 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,041 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,054 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,055 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,056 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,057 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,104 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:19:12,105 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:19:12,106 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:19:12,114 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:19:12,118 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:19:12,119 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:19:12,120 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:19:12,120 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:19:12,121 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:19:12,123 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:19:12,233 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-24 23:19:12,235 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,235 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:19:12,369 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8957-8968] [2023-11-24 23:19:12,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:19:12,699 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,699 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,700 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,700 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,700 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,700 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,700 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,701 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,701 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,701 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,701 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,701 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,702 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,704 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,704 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,704 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,704 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,705 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:19:12,713 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:19:12,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12 WrapperNode [2023-11-24 23:19:12,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:19:12,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:19:12,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:19:12,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:19:12,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:12,865 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:12,995 INFO L138 Inliner]: procedures = 694, calls = 2952, calls flagged for inlining = 61, calls inlined = 12, statements flattened = 1196 [2023-11-24 23:19:12,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:19:12,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:19:12,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:19:12,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:19:13,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:13,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:13,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:13,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:13,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:13,131 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:13,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:13,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:13,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:19:13,189 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:19:13,189 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:19:13,189 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:19:13,190 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (1/1) ... [2023-11-24 23:19:13,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:19:13,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:13,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:19:13,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:19:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-24 23:19:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-24 23:19:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2023-11-24 23:19:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2023-11-24 23:19:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:19:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:19:13,298 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:19:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2023-11-24 23:19:13,298 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2023-11-24 23:19:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:19:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:19:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:19:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:19:13,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:19:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:19:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:19:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:19:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2023-11-24 23:19:13,301 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2023-11-24 23:19:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:19:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:19:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:19:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:19:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-24 23:19:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-24 23:19:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2023-11-24 23:19:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2023-11-24 23:19:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:19:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:19:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_empty_array [2023-11-24 23:19:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_empty_array [2023-11-24 23:19:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:19:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:19:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:19:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2023-11-24 23:19:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2023-11-24 23:19:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure is_front_valid_state [2023-11-24 23:19:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure is_front_valid_state [2023-11-24 23:19:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:19:13,308 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:19:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2023-11-24 23:19:13,308 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2023-11-24 23:19:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2023-11-24 23:19:13,309 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2023-11-24 23:19:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-24 23:19:13,309 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-24 23:19:13,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:19:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2023-11-24 23:19:13,310 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2023-11-24 23:19:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2023-11-24 23:19:13,310 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2023-11-24 23:19:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2023-11-24 23:19:13,310 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2023-11-24 23:19:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2023-11-24 23:19:13,311 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2023-11-24 23:19:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:19:13,801 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:19:13,804 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:19:15,678 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:19:16,156 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:19:16,156 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:19:16,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:19:16 BoogieIcfgContainer [2023-11-24 23:19:16,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:19:16,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:19:16,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:19:16,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:19:16,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:19:08" (1/3) ... [2023-11-24 23:19:16,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7341a45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:19:16, skipping insertion in model container [2023-11-24 23:19:16,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:19:12" (2/3) ... [2023-11-24 23:19:16,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7341a45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:19:16, skipping insertion in model container [2023-11-24 23:19:16,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:19:16" (3/3) ... [2023-11-24 23:19:16,172 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_acquire_harness_negated.i [2023-11-24 23:19:16,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:19:16,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:19:16,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:19:16,273 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;@3b478a92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:19:16,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:19:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 339 states, 169 states have (on average 1.1715976331360947) internal successors, (198), 172 states have internal predecessors, (198), 146 states have call successors, (146), 21 states have call predecessors, (146), 21 states have return successors, (146), 146 states have call predecessors, (146), 146 states have call successors, (146) [2023-11-24 23:19:16,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-24 23:19:16,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:16,291 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:16,292 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 23:19:16,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:16,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1772097387, now seen corresponding path program 1 times [2023-11-24 23:19:16,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:16,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903151238] [2023-11-24 23:19:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:16,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 23:19:17,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:17,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903151238] [2023-11-24 23:19:17,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903151238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:17,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:19:17,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 23:19:17,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232827745] [2023-11-24 23:19:17,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:17,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:19:17,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:17,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:19:17,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:19:17,861 INFO L87 Difference]: Start difference. First operand has 339 states, 169 states have (on average 1.1715976331360947) internal successors, (198), 172 states have internal predecessors, (198), 146 states have call successors, (146), 21 states have call predecessors, (146), 21 states have return successors, (146), 146 states have call predecessors, (146), 146 states have call successors, (146) Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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 23:19:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:18,714 INFO L93 Difference]: Finished difference Result 664 states and 1062 transitions. [2023-11-24 23:19:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:19:18,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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 57 [2023-11-24 23:19:18,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:18,745 INFO L225 Difference]: With dead ends: 664 [2023-11-24 23:19:18,745 INFO L226 Difference]: Without dead ends: 348 [2023-11-24 23:19:18,757 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 23:19:18,770 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 26 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:18,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2681 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:19:18,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-24 23:19:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2023-11-24 23:19:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 176 states have (on average 1.1590909090909092) internal successors, (204), 179 states have internal predecessors, (204), 147 states have call successors, (147), 23 states have call predecessors, (147), 23 states have return successors, (146), 146 states have call predecessors, (146), 146 states have call successors, (146) [2023-11-24 23:19:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 497 transitions. [2023-11-24 23:19:18,899 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 497 transitions. Word has length 57 [2023-11-24 23:19:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:18,900 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 497 transitions. [2023-11-24 23:19:18,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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 23:19:18,901 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 497 transitions. [2023-11-24 23:19:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-24 23:19:18,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:18,909 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:18,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:19:18,909 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 23:19:18,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:18,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1043717362, now seen corresponding path program 1 times [2023-11-24 23:19:18,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:18,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988742748] [2023-11-24 23:19:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:18,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-24 23:19:19,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:19,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988742748] [2023-11-24 23:19:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988742748] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:19,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275944335] [2023-11-24 23:19:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:19,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:19,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:19,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:19,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:19:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:20,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:19:20,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-24 23:19:20,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:19:20,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275944335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:20,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:19:20,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-24 23:19:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578070053] [2023-11-24 23:19:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:20,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:19:20,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:20,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:19:20,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:19:20,856 INFO L87 Difference]: Start difference. First operand 348 states and 497 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-24 23:19:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:21,668 INFO L93 Difference]: Finished difference Result 363 states and 515 transitions. [2023-11-24 23:19:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:19:21,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 87 [2023-11-24 23:19:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:21,675 INFO L225 Difference]: With dead ends: 363 [2023-11-24 23:19:21,676 INFO L226 Difference]: Without dead ends: 360 [2023-11-24 23:19:21,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 85 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 23:19:21,678 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 24 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:21,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2711 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:19:21,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-24 23:19:21,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-11-24 23:19:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 185 states have (on average 1.172972972972973) internal successors, (217), 188 states have internal predecessors, (217), 148 states have call successors, (148), 25 states have call predecessors, (148), 25 states have return successors, (147), 147 states have call predecessors, (147), 147 states have call successors, (147) [2023-11-24 23:19:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 512 transitions. [2023-11-24 23:19:21,727 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 512 transitions. Word has length 87 [2023-11-24 23:19:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:21,728 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 512 transitions. [2023-11-24 23:19:21,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-24 23:19:21,729 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 512 transitions. [2023-11-24 23:19:21,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-11-24 23:19:21,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:21,734 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:21,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:19:21,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:19:21,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:21,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:21,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1751637453, now seen corresponding path program 1 times [2023-11-24 23:19:21,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:21,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27175435] [2023-11-24 23:19:21,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:21,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-24 23:19:23,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:23,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27175435] [2023-11-24 23:19:23,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27175435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:23,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363636326] [2023-11-24 23:19:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:23,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:23,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:23,035 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:23,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:19:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:23,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:19:23,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-11-24 23:19:24,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:19:24,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363636326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:24,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:19:24,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-24 23:19:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489463300] [2023-11-24 23:19:24,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:24,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:19:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:24,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:19:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:19:24,007 INFO L87 Difference]: Start difference. First operand 360 states and 512 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-24 23:19:24,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:24,681 INFO L93 Difference]: Finished difference Result 652 states and 933 transitions. [2023-11-24 23:19:24,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:19:24,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 199 [2023-11-24 23:19:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:24,687 INFO L225 Difference]: With dead ends: 652 [2023-11-24 23:19:24,687 INFO L226 Difference]: Without dead ends: 369 [2023-11-24 23:19:24,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 196 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 23:19:24,691 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 15 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:24,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2715 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:19:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-24 23:19:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-11-24 23:19:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 191 states have (on average 1.1727748691099475) internal successors, (224), 194 states have internal predecessors, (224), 149 states have call successors, (149), 27 states have call predecessors, (149), 27 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2023-11-24 23:19:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 521 transitions. [2023-11-24 23:19:24,725 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 521 transitions. Word has length 199 [2023-11-24 23:19:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:24,726 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 521 transitions. [2023-11-24 23:19:24,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-11-24 23:19:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 521 transitions. [2023-11-24 23:19:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-24 23:19:24,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:24,731 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:24,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:19:24,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:24,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:24,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:24,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1998486030, now seen corresponding path program 1 times [2023-11-24 23:19:24,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:24,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481035250] [2023-11-24 23:19:24,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:24,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-24 23:19:25,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:25,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481035250] [2023-11-24 23:19:25,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481035250] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:25,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667537701] [2023-11-24 23:19:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:25,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:25,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:25,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:25,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:19:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:26,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:19:26,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-24 23:19:26,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:19:26,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667537701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:26,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:19:26,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-11-24 23:19:26,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944816203] [2023-11-24 23:19:26,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:26,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:19:26,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:26,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:19:26,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:19:26,912 INFO L87 Difference]: Start difference. First operand 369 states and 521 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-24 23:19:27,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:27,510 INFO L93 Difference]: Finished difference Result 729 states and 1034 transitions. [2023-11-24 23:19:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:19:27,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 205 [2023-11-24 23:19:27,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:27,516 INFO L225 Difference]: With dead ends: 729 [2023-11-24 23:19:27,517 INFO L226 Difference]: Without dead ends: 381 [2023-11-24 23:19:27,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 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 23:19:27,520 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 6 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:27,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2209 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:19:27,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-24 23:19:27,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2023-11-24 23:19:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 196 states have (on average 1.163265306122449) internal successors, (228), 199 states have internal predecessors, (228), 150 states have call successors, (150), 29 states have call predecessors, (150), 29 states have return successors, (150), 149 states have call predecessors, (150), 149 states have call successors, (150) [2023-11-24 23:19:27,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 528 transitions. [2023-11-24 23:19:27,552 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 528 transitions. Word has length 205 [2023-11-24 23:19:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:27,553 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 528 transitions. [2023-11-24 23:19:27,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-24 23:19:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 528 transitions. [2023-11-24 23:19:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-24 23:19:27,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:27,558 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:27,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:19:27,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:27,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:27,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash 347075836, now seen corresponding path program 1 times [2023-11-24 23:19:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:27,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629837578] [2023-11-24 23:19:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-24 23:19:28,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:28,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629837578] [2023-11-24 23:19:28,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629837578] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:28,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303489563] [2023-11-24 23:19:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:28,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:28,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:28,680 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:28,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:19:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:29,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 3230 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:19:29,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-24 23:19:29,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:19:29,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303489563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:29,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:19:29,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-24 23:19:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678340171] [2023-11-24 23:19:29,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:29,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:19:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:29,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:19:29,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:19:29,828 INFO L87 Difference]: Start difference. First operand 377 states and 528 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-24 23:19:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:30,618 INFO L93 Difference]: Finished difference Result 739 states and 1035 transitions. [2023-11-24 23:19:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:19:30,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 207 [2023-11-24 23:19:30,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:30,624 INFO L225 Difference]: With dead ends: 739 [2023-11-24 23:19:30,624 INFO L226 Difference]: Without dead ends: 381 [2023-11-24 23:19:30,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 203 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 23:19:30,628 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 17 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:30,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2626 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:19:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-24 23:19:30,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2023-11-24 23:19:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 197 states have (on average 1.1573604060913705) internal successors, (228), 201 states have internal predecessors, (228), 150 states have call successors, (150), 29 states have call predecessors, (150), 30 states have return successors, (151), 149 states have call predecessors, (151), 149 states have call successors, (151) [2023-11-24 23:19:30,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 529 transitions. [2023-11-24 23:19:30,659 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 529 transitions. Word has length 207 [2023-11-24 23:19:30,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:30,660 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 529 transitions. [2023-11-24 23:19:30,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-24 23:19:30,661 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 529 transitions. [2023-11-24 23:19:30,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-24 23:19:30,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:30,665 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:30,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:19:30,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:30,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:30,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:30,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1226667946, now seen corresponding path program 1 times [2023-11-24 23:19:30,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:30,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927790399] [2023-11-24 23:19:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:30,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-24 23:19:32,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927790399] [2023-11-24 23:19:32,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927790399] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:32,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717330801] [2023-11-24 23:19:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:32,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:32,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:32,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:19:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:33,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:19:33,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-24 23:19:33,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:19:33,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717330801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:33,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:19:33,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-24 23:19:33,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931654711] [2023-11-24 23:19:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:33,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:19:33,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:33,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:19:33,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:19:33,191 INFO L87 Difference]: Start difference. First operand 379 states and 529 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-24 23:19:33,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:33,850 INFO L93 Difference]: Finished difference Result 741 states and 1035 transitions. [2023-11-24 23:19:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:19:33,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 209 [2023-11-24 23:19:33,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:33,854 INFO L225 Difference]: With dead ends: 741 [2023-11-24 23:19:33,854 INFO L226 Difference]: Without dead ends: 383 [2023-11-24 23:19:33,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 205 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 23:19:33,857 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 18 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:33,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2183 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:19:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-24 23:19:33,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2023-11-24 23:19:33,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 197 states have (on average 1.1522842639593909) internal successors, (227), 201 states have internal predecessors, (227), 150 states have call successors, (150), 29 states have call predecessors, (150), 30 states have return successors, (151), 149 states have call predecessors, (151), 149 states have call successors, (151) [2023-11-24 23:19:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 528 transitions. [2023-11-24 23:19:33,882 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 528 transitions. Word has length 209 [2023-11-24 23:19:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:33,883 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 528 transitions. [2023-11-24 23:19:33,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-24 23:19:33,884 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 528 transitions. [2023-11-24 23:19:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-24 23:19:33,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:33,887 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:33,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:19:34,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 23:19:34,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:34,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:34,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060284, now seen corresponding path program 1 times [2023-11-24 23:19:34,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:34,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160308060] [2023-11-24 23:19:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:34,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-24 23:19:34,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:34,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160308060] [2023-11-24 23:19:34,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160308060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:34,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782626041] [2023-11-24 23:19:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:34,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:34,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:34,985 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:35,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:19:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:35,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:19:35,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-24 23:19:36,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:19:36,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782626041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:36,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:19:36,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-24 23:19:36,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446705805] [2023-11-24 23:19:36,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:36,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:19:36,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:36,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:19:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-24 23:19:36,008 INFO L87 Difference]: Start difference. First operand 379 states and 528 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-24 23:19:36,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:36,685 INFO L93 Difference]: Finished difference Result 741 states and 1033 transitions. [2023-11-24 23:19:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:19:36,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 211 [2023-11-24 23:19:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:36,691 INFO L225 Difference]: With dead ends: 741 [2023-11-24 23:19:36,691 INFO L226 Difference]: Without dead ends: 383 [2023-11-24 23:19:36,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 207 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 23:19:36,694 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 15 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:36,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2618 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:19:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-24 23:19:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2023-11-24 23:19:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 197 states have (on average 1.1472081218274113) internal successors, (226), 201 states have internal predecessors, (226), 150 states have call successors, (150), 29 states have call predecessors, (150), 30 states have return successors, (151), 149 states have call predecessors, (151), 149 states have call successors, (151) [2023-11-24 23:19:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 527 transitions. [2023-11-24 23:19:36,721 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 527 transitions. Word has length 211 [2023-11-24 23:19:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:36,722 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 527 transitions. [2023-11-24 23:19:36,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2023-11-24 23:19:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 527 transitions. [2023-11-24 23:19:36,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-24 23:19:36,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:36,728 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:36,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:19:36,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:19:36,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:36,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:36,941 INFO L85 PathProgramCache]: Analyzing trace with hash 653337758, now seen corresponding path program 1 times [2023-11-24 23:19:36,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:36,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239977999] [2023-11-24 23:19:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:36,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-24 23:19:38,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:38,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239977999] [2023-11-24 23:19:38,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239977999] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:38,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126309255] [2023-11-24 23:19:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:38,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:38,445 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:38,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:19:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:39,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:19:39,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-24 23:19:39,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:19:39,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126309255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:39,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:19:39,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 11 [2023-11-24 23:19:39,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93840532] [2023-11-24 23:19:39,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:39,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:19:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:19:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:19:39,523 INFO L87 Difference]: Start difference. First operand 379 states and 527 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-11-24 23:19:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:40,336 INFO L93 Difference]: Finished difference Result 723 states and 1048 transitions. [2023-11-24 23:19:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:19:40,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 213 [2023-11-24 23:19:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:40,342 INFO L225 Difference]: With dead ends: 723 [2023-11-24 23:19:40,343 INFO L226 Difference]: Without dead ends: 379 [2023-11-24 23:19:40,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 216 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 23:19:40,347 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 6 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:40,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2238 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:19:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-24 23:19:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 377. [2023-11-24 23:19:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 196 states have (on average 1.1326530612244898) internal successors, (222), 199 states have internal predecessors, (222), 150 states have call successors, (150), 29 states have call predecessors, (150), 29 states have return successors, (149), 149 states have call predecessors, (149), 149 states have call successors, (149) [2023-11-24 23:19:40,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 521 transitions. [2023-11-24 23:19:40,383 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 521 transitions. Word has length 213 [2023-11-24 23:19:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:40,384 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 521 transitions. [2023-11-24 23:19:40,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-11-24 23:19:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 521 transitions. [2023-11-24 23:19:40,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-24 23:19:40,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:40,389 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:40,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:19:40,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:40,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:40,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -517553804, now seen corresponding path program 1 times [2023-11-24 23:19:40,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:40,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436912310] [2023-11-24 23:19:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:40,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 4 proven. 71 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-24 23:19:41,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436912310] [2023-11-24 23:19:41,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436912310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077767388] [2023-11-24 23:19:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:41,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:41,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:41,978 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:42,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:19:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:42,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 3252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:19:42,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-24 23:19:43,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:19:43,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077767388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:43,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:19:43,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-24 23:19:43,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367135875] [2023-11-24 23:19:43,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:43,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:19:43,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:19:43,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:19:43,066 INFO L87 Difference]: Start difference. First operand 377 states and 521 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-11-24 23:19:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:43,809 INFO L93 Difference]: Finished difference Result 713 states and 1028 transitions. [2023-11-24 23:19:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:19:43,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 218 [2023-11-24 23:19:43,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:43,818 INFO L225 Difference]: With dead ends: 713 [2023-11-24 23:19:43,818 INFO L226 Difference]: Without dead ends: 377 [2023-11-24 23:19:43,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 218 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 23:19:43,825 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 16 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:43,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2653 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:19:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-24 23:19:43,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-24 23:19:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 196 states have (on average 1.1275510204081634) internal successors, (221), 199 states have internal predecessors, (221), 150 states have call successors, (150), 29 states have call predecessors, (150), 29 states have return successors, (149), 149 states have call predecessors, (149), 149 states have call successors, (149) [2023-11-24 23:19:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 520 transitions. [2023-11-24 23:19:43,859 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 520 transitions. Word has length 218 [2023-11-24 23:19:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:43,860 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 520 transitions. [2023-11-24 23:19:43,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-11-24 23:19:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 520 transitions. [2023-11-24 23:19:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-11-24 23:19:43,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:43,864 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:43,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:19:44,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 23:19:44,078 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:44,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:44,079 INFO L85 PathProgramCache]: Analyzing trace with hash -731186188, now seen corresponding path program 1 times [2023-11-24 23:19:44,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:44,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681419677] [2023-11-24 23:19:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:44,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 5 proven. 77 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-24 23:19:45,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:45,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681419677] [2023-11-24 23:19:45,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681419677] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:45,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485459593] [2023-11-24 23:19:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:45,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:45,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:45,424 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:45,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:19:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:46,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 3260 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:19:46,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-11-24 23:19:46,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:19:46,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485459593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:46,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:19:46,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-24 23:19:46,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854844801] [2023-11-24 23:19:46,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:46,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:19:46,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:46,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:19:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:19:46,523 INFO L87 Difference]: Start difference. First operand 377 states and 520 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-11-24 23:19:47,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:19:47,226 INFO L93 Difference]: Finished difference Result 715 states and 1028 transitions. [2023-11-24 23:19:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:19:47,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 222 [2023-11-24 23:19:47,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:19:47,231 INFO L225 Difference]: With dead ends: 715 [2023-11-24 23:19:47,231 INFO L226 Difference]: Without dead ends: 379 [2023-11-24 23:19:47,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 222 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 23:19:47,234 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 17 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:19:47,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2207 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:19:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-24 23:19:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 377. [2023-11-24 23:19:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 196 states have (on average 1.1224489795918366) internal successors, (220), 199 states have internal predecessors, (220), 150 states have call successors, (150), 29 states have call predecessors, (150), 29 states have return successors, (149), 149 states have call predecessors, (149), 149 states have call successors, (149) [2023-11-24 23:19:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 519 transitions. [2023-11-24 23:19:47,258 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 519 transitions. Word has length 222 [2023-11-24 23:19:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:19:47,259 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 519 transitions. [2023-11-24 23:19:47,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-11-24 23:19:47,260 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 519 transitions. [2023-11-24 23:19:47,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-24 23:19:47,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:19:47,263 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:19:47,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:19:47,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:47,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:19:47,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:19:47,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1082647436, now seen corresponding path program 1 times [2023-11-24 23:19:47,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:19:47,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474201739] [2023-11-24 23:19:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:47,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:19:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 83 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-24 23:19:48,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:19:48,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474201739] [2023-11-24 23:19:48,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474201739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:19:48,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222101717] [2023-11-24 23:19:48,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:19:48,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:19:48,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:19:48,816 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:19:48,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f28f19-0af8-406c-a505-b514dc4aa299/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:19:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:19:49,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 3268 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:19:49,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:19:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-24 23:19:49,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:19:49,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222101717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:19:49,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:19:49,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-24 23:19:49,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028918717] [2023-11-24 23:19:49,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:19:49,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:19:49,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:19:49,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:19:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:19:49,900 INFO L87 Difference]: Start difference. First operand 377 states and 519 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37)