./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_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/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_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh --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 [2023-12-02 14:27:57,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:27:57,908 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 14:27:57,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:27:57,914 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:27:57,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:27:57,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:27:57,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:27:57,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:27:57,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:27:57,944 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:27:57,944 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:27:57,945 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:27:57,945 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:27:57,946 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:27:57,946 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:27:57,947 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:27:57,948 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:27:57,948 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:27:57,949 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:27:57,949 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:27:57,950 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:27:57,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:27:57,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:27:57,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:27:57,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:27:57,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:27:57,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:27:57,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:27:57,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:27:57,954 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:27:57,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:27:57,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:27:57,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:27:57,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:27:57,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:27:57,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:27:57,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:27:57,956 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:27:57,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:27:57,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:27:57,957 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:27:57,957 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:27:57,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:27:57,958 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_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e59d9fbf3221e05899a4337354f2c9a73733c9d6b6114c066d75ddd1c55b4e4 [2023-12-02 14:27:58,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:27:58,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:27:58,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:27:58,193 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:27:58,193 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:27:58,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i [2023-12-02 14:28:00,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:28:01,374 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:28:01,374 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i [2023-12-02 14:28:01,404 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/data/60d694661/c9945034b14f47f3b358acd506f1c430/FLAGcc2628d61 [2023-12-02 14:28:01,418 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/data/60d694661/c9945034b14f47f3b358acd506f1c430 [2023-12-02 14:28:01,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:28:01,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:28:01,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:28:01,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:28:01,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:28:01,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:28:01" (1/1) ... [2023-12-02 14:28:01,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b7d3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:01, skipping insertion in model container [2023-12-02 14:28:01,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:28:01" (1/1) ... [2023-12-02 14:28:01,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:28:01,811 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_8c5e819d-9a14-4449-b901-9d48f4a54f2a/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4497,4510] [2023-12-02 14:28:01,820 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_8c5e819d-9a14-4449-b901-9d48f4a54f2a/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4557,4570] [2023-12-02 14:28:02,685 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:02,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:02,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:02,687 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:02,688 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:02,702 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:02,703 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:02,705 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:02,705 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,142 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 14:28:03,143 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 14:28:03,144 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 14:28:03,145 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 14:28:03,147 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 14:28:03,148 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 14:28:03,148 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 14:28:03,149 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 14:28:03,150 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 14:28:03,151 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 14:28:03,398 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,399 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:28:03,529 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:28:03,540 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_8c5e819d-9a14-4449-b901-9d48f4a54f2a/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4497,4510] [2023-12-02 14:28:03,541 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_8c5e819d-9a14-4449-b901-9d48f4a54f2a/sv-benchmarks/c/aws-c-common/aws_ring_buffer_acquire_harness_negated.i[4557,4570] [2023-12-02 14:28:03,607 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,615 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,616 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,616 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,618 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,625 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,630 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,631 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,631 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,691 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-12-02 14:28:03,692 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-12-02 14:28:03,692 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-12-02 14:28:03,693 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-12-02 14:28:03,694 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-12-02 14:28:03,694 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-12-02 14:28:03,695 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-12-02 14:28:03,695 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-12-02 14:28:03,696 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-12-02 14:28:03,696 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-12-02 14:28:03,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-12-02 14:28:03,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-12-02 14:28:03,795 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8957-8968] [2023-12-02 14:28:03,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:28:03,999 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:03,999 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:03,999 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:03,999 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,000 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,000 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,000 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,000 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,000 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,000 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,000 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,001 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,001 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,001 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,001 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,001 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,002 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,002 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:28:04,008 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:28:04,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04 WrapperNode [2023-12-02 14:28:04,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:28:04,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:28:04,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:28:04,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:28:04,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,175 INFO L138 Inliner]: procedures = 694, calls = 2952, calls flagged for inlining = 61, calls inlined = 12, statements flattened = 1196 [2023-12-02 14:28:04,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:28:04,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:28:04,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:28:04,176 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:28:04,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:28:04,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:28:04,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:28:04,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:28:04,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (1/1) ... [2023-12-02 14:28:04,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:28:04,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:04,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:28:04,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:28:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-12-02 14:28:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-12-02 14:28:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_store_n [2023-12-02 14:28:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2023-12-02 14:28:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:28:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-12-02 14:28:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-12-02 14:28:04,362 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr [2023-12-02 14:28:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr [2023-12-02 14:28:04,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:28:04,363 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-12-02 14:28:04,363 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-12-02 14:28:04,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 14:28:04,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 14:28:04,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:28:04,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:28:04,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:28:04,363 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_priv_xlate_order [2023-12-02 14:28:04,363 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_priv_xlate_order [2023-12-02 14:28:04,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:28:04,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:28:04,364 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-12-02 14:28:04,364 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-12-02 14:28:04,364 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-12-02 14:28:04,364 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-12-02 14:28:04,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr [2023-12-02 14:28:04,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr [2023-12-02 14:28:04,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 14:28:04,365 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 14:28:04,365 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_empty_array [2023-12-02 14:28:04,365 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_empty_array [2023-12-02 14:28:04,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:28:04,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:28:04,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 14:28:04,366 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_check_atomic_ptr [2023-12-02 14:28:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_check_atomic_ptr [2023-12-02 14:28:04,366 INFO L130 BoogieDeclarations]: Found specification of procedure is_front_valid_state [2023-12-02 14:28:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure is_front_valid_state [2023-12-02 14:28:04,366 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-12-02 14:28:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-12-02 14:28:04,366 INFO L130 BoogieDeclarations]: Found specification of procedure is_ends_valid_state [2023-12-02 14:28:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ends_valid_state [2023-12-02 14:28:04,367 INFO L130 BoogieDeclarations]: Found specification of procedure s_buf_belongs_to_pool [2023-12-02 14:28:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure s_buf_belongs_to_pool [2023-12-02 14:28:04,367 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-12-02 14:28:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-12-02 14:28:04,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:28:04,367 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_store_ptr_explicit [2023-12-02 14:28:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_store_ptr_explicit [2023-12-02 14:28:04,367 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ring_buffer_is_valid [2023-12-02 14:28:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ring_buffer_is_valid [2023-12-02 14:28:04,368 INFO L130 BoogieDeclarations]: Found specification of procedure is_middle_valid_state [2023-12-02 14:28:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure is_middle_valid_state [2023-12-02 14:28:04,368 INFO L130 BoogieDeclarations]: Found specification of procedure aws_atomic_load_ptr_explicit [2023-12-02 14:28:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_atomic_load_ptr_explicit [2023-12-02 14:28:04,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:28:04,654 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:28:04,656 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:28:06,184 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:28:06,511 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:28:06,511 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 14:28:06,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:28:06 BoogieIcfgContainer [2023-12-02 14:28:06,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:28:06,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:28:06,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:28:06,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:28:06,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:28:01" (1/3) ... [2023-12-02 14:28:06,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a85ea5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:28:06, skipping insertion in model container [2023-12-02 14:28:06,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:28:04" (2/3) ... [2023-12-02 14:28:06,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a85ea5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:28:06, skipping insertion in model container [2023-12-02 14:28:06,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:28:06" (3/3) ... [2023-12-02 14:28:06,521 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_acquire_harness_negated.i [2023-12-02 14:28:06,538 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:28:06,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 14:28:06,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:28:06,628 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;@6bc7aa00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:28:06,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 14:28:06,634 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) [2023-12-02 14:28:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 14:28:06,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:06,644 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] [2023-12-02 14:28:06,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:06,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:06,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1772097387, now seen corresponding path program 1 times [2023-12-02 14:28:06,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:06,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203574049] [2023-12-02 14:28:06,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:06,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 14:28:07,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:07,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203574049] [2023-12-02 14:28:07,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203574049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:07,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:28:07,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 14:28:07,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960556936] [2023-12-02 14:28:07,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:07,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:28:07,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:07,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:28:07,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:28:07,614 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) [2023-12-02 14:28:08,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:08,202 INFO L93 Difference]: Finished difference Result 664 states and 1062 transitions. [2023-12-02 14:28:08,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:08,204 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 [2023-12-02 14:28:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:08,218 INFO L225 Difference]: With dead ends: 664 [2023-12-02 14:28:08,218 INFO L226 Difference]: Without dead ends: 348 [2023-12-02 14:28:08,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:28:08,241 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 26 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:08,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2681 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:28:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-02 14:28:08,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2023-12-02 14:28:08,313 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) [2023-12-02 14:28:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 497 transitions. [2023-12-02 14:28:08,320 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 497 transitions. Word has length 57 [2023-12-02 14:28:08,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:08,321 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 497 transitions. [2023-12-02 14:28:08,321 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) [2023-12-02 14:28:08,321 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 497 transitions. [2023-12-02 14:28:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 14:28:08,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:08,326 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] [2023-12-02 14:28:08,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:28:08,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:08,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1043717362, now seen corresponding path program 1 times [2023-12-02 14:28:08,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:08,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68966061] [2023-12-02 14:28:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:08,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:28:08,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:08,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68966061] [2023-12-02 14:28:08,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68966061] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:08,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68816708] [2023-12-02 14:28:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:08,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:08,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:08,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:08,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:28:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:09,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 14:28:09,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 14:28:09,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:09,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68816708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:09,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:28:09,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-02 14:28:09,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802085721] [2023-12-02 14:28:09,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:09,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:28:09,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:09,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:28:09,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:28:09,733 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) [2023-12-02 14:28:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:10,268 INFO L93 Difference]: Finished difference Result 363 states and 515 transitions. [2023-12-02 14:28:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:10,269 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 [2023-12-02 14:28:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:10,274 INFO L225 Difference]: With dead ends: 363 [2023-12-02 14:28:10,274 INFO L226 Difference]: Without dead ends: 360 [2023-12-02 14:28:10,274 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 [2023-12-02 14:28:10,276 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 24 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:10,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2711 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:28:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-02 14:28:10,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-12-02 14:28:10,310 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) [2023-12-02 14:28:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 512 transitions. [2023-12-02 14:28:10,313 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 512 transitions. Word has length 87 [2023-12-02 14:28:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:10,314 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 512 transitions. [2023-12-02 14:28:10,314 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) [2023-12-02 14:28:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 512 transitions. [2023-12-02 14:28:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-02 14:28:10,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:10,319 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] [2023-12-02 14:28:10,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:28:10,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:10,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:10,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1751637453, now seen corresponding path program 1 times [2023-12-02 14:28:10,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:10,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353540744] [2023-12-02 14:28:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:10,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-12-02 14:28:11,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:11,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353540744] [2023-12-02 14:28:11,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353540744] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:11,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554322787] [2023-12-02 14:28:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:11,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:11,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:11,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:11,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:28:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:12,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 3185 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 14:28:12,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-02 14:28:12,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:12,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554322787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:12,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:28:12,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-02 14:28:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003009589] [2023-12-02 14:28:12,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:12,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:28:12,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:28:12,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:28:12,207 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) [2023-12-02 14:28:12,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:12,788 INFO L93 Difference]: Finished difference Result 652 states and 933 transitions. [2023-12-02 14:28:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:12,789 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 [2023-12-02 14:28:12,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:12,793 INFO L225 Difference]: With dead ends: 652 [2023-12-02 14:28:12,793 INFO L226 Difference]: Without dead ends: 369 [2023-12-02 14:28:12,795 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 [2023-12-02 14:28:12,796 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 15 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:12,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2715 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:28:12,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-12-02 14:28:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-12-02 14:28:12,821 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) [2023-12-02 14:28:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 521 transitions. [2023-12-02 14:28:12,825 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 521 transitions. Word has length 199 [2023-12-02 14:28:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:12,826 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 521 transitions. [2023-12-02 14:28:12,827 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) [2023-12-02 14:28:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 521 transitions. [2023-12-02 14:28:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-02 14:28:12,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:12,831 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] [2023-12-02 14:28:12,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:28:13,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:13,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:13,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1998486030, now seen corresponding path program 1 times [2023-12-02 14:28:13,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112594890] [2023-12-02 14:28:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-02 14:28:13,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:13,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112594890] [2023-12-02 14:28:13,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112594890] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:13,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122611931] [2023-12-02 14:28:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:13,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:13,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:13,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:13,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:28:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:14,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 14:28:14,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-02 14:28:14,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:14,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122611931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:14,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:28:14,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-12-02 14:28:14,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702181640] [2023-12-02 14:28:14,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:14,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:28:14,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:14,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:28:14,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:28:14,587 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) [2023-12-02 14:28:15,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:15,076 INFO L93 Difference]: Finished difference Result 729 states and 1034 transitions. [2023-12-02 14:28:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:15,076 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 [2023-12-02 14:28:15,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:15,081 INFO L225 Difference]: With dead ends: 729 [2023-12-02 14:28:15,082 INFO L226 Difference]: Without dead ends: 381 [2023-12-02 14:28:15,084 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 [2023-12-02 14:28:15,085 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 6 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:15,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2209 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:28:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-02 14:28:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2023-12-02 14:28:15,114 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) [2023-12-02 14:28:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 528 transitions. [2023-12-02 14:28:15,119 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 528 transitions. Word has length 205 [2023-12-02 14:28:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:15,119 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 528 transitions. [2023-12-02 14:28:15,120 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) [2023-12-02 14:28:15,120 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 528 transitions. [2023-12-02 14:28:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-02 14:28:15,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:15,124 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] [2023-12-02 14:28:15,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:28:15,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:15,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:15,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash 347075836, now seen corresponding path program 1 times [2023-12-02 14:28:15,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:15,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628967333] [2023-12-02 14:28:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:15,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-02 14:28:16,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:16,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628967333] [2023-12-02 14:28:16,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628967333] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:16,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147895410] [2023-12-02 14:28:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:16,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:16,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:16,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:16,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:28:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:16,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 3230 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:28:16,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-02 14:28:16,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:16,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147895410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:16,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:28:16,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-02 14:28:16,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142444132] [2023-12-02 14:28:16,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:16,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:28:16,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:16,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:28:16,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:28:16,947 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) [2023-12-02 14:28:17,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:17,450 INFO L93 Difference]: Finished difference Result 739 states and 1035 transitions. [2023-12-02 14:28:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:17,451 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 [2023-12-02 14:28:17,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:17,453 INFO L225 Difference]: With dead ends: 739 [2023-12-02 14:28:17,453 INFO L226 Difference]: Without dead ends: 381 [2023-12-02 14:28:17,455 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 [2023-12-02 14:28:17,456 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 17 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:17,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2626 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:28:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-02 14:28:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2023-12-02 14:28:17,489 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) [2023-12-02 14:28:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 529 transitions. [2023-12-02 14:28:17,493 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 529 transitions. Word has length 207 [2023-12-02 14:28:17,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:17,494 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 529 transitions. [2023-12-02 14:28:17,494 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) [2023-12-02 14:28:17,494 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 529 transitions. [2023-12-02 14:28:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-02 14:28:17,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:17,498 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] [2023-12-02 14:28:17,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:28:17,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:17,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:17,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1226667946, now seen corresponding path program 1 times [2023-12-02 14:28:17,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:17,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843155134] [2023-12-02 14:28:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:17,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-02 14:28:18,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:18,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843155134] [2023-12-02 14:28:18,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843155134] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:18,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984354383] [2023-12-02 14:28:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:18,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:18,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:18,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:18,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:28:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:19,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 3234 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:28:19,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-02 14:28:19,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984354383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:19,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:28:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-02 14:28:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505249638] [2023-12-02 14:28:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:19,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:28:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:28:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:28:19,171 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) [2023-12-02 14:28:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:19,617 INFO L93 Difference]: Finished difference Result 741 states and 1035 transitions. [2023-12-02 14:28:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:19,618 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 [2023-12-02 14:28:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:19,621 INFO L225 Difference]: With dead ends: 741 [2023-12-02 14:28:19,621 INFO L226 Difference]: Without dead ends: 383 [2023-12-02 14:28:19,623 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 [2023-12-02 14:28:19,624 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 18 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:19,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2183 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:28:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-02 14:28:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2023-12-02 14:28:19,639 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) [2023-12-02 14:28:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 528 transitions. [2023-12-02 14:28:19,642 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 528 transitions. Word has length 209 [2023-12-02 14:28:19,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:19,643 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 528 transitions. [2023-12-02 14:28:19,643 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) [2023-12-02 14:28:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 528 transitions. [2023-12-02 14:28:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-02 14:28:19,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:19,646 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] [2023-12-02 14:28:19,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 14:28:19,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:19,847 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:19,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:19,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060284, now seen corresponding path program 1 times [2023-12-02 14:28:19,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:19,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804505147] [2023-12-02 14:28:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:19,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-02 14:28:20,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:20,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804505147] [2023-12-02 14:28:20,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804505147] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:20,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987537963] [2023-12-02 14:28:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:20,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:20,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:20,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:20,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 14:28:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:21,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 3238 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:28:21,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-02 14:28:21,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:21,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987537963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:21,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:28:21,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-02 14:28:21,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749105355] [2023-12-02 14:28:21,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:21,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:28:21,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:21,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:28:21,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:28:21,135 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) [2023-12-02 14:28:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:21,685 INFO L93 Difference]: Finished difference Result 741 states and 1033 transitions. [2023-12-02 14:28:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:21,686 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 [2023-12-02 14:28:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:21,689 INFO L225 Difference]: With dead ends: 741 [2023-12-02 14:28:21,689 INFO L226 Difference]: Without dead ends: 383 [2023-12-02 14:28:21,691 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 [2023-12-02 14:28:21,692 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:21,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2618 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:28:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-02 14:28:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2023-12-02 14:28:21,710 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) [2023-12-02 14:28:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 527 transitions. [2023-12-02 14:28:21,714 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 527 transitions. Word has length 211 [2023-12-02 14:28:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:21,714 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 527 transitions. [2023-12-02 14:28:21,714 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) [2023-12-02 14:28:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 527 transitions. [2023-12-02 14:28:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-02 14:28:21,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:21,717 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] [2023-12-02 14:28:21,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 14:28:21,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:21,918 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:21,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:21,918 INFO L85 PathProgramCache]: Analyzing trace with hash 653337758, now seen corresponding path program 1 times [2023-12-02 14:28:21,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:21,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015667612] [2023-12-02 14:28:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:21,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 3 proven. 63 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-02 14:28:22,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:22,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015667612] [2023-12-02 14:28:22,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015667612] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:22,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157704804] [2023-12-02 14:28:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:22,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:22,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:22,841 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:22,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 14:28:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:23,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 14:28:23,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-02 14:28:23,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:23,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157704804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:23,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:28:23,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 11 [2023-12-02 14:28:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876362493] [2023-12-02 14:28:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:23,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:28:23,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:23,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:28:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:28:23,569 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) [2023-12-02 14:28:24,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:24,150 INFO L93 Difference]: Finished difference Result 723 states and 1048 transitions. [2023-12-02 14:28:24,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:24,151 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 [2023-12-02 14:28:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:24,154 INFO L225 Difference]: With dead ends: 723 [2023-12-02 14:28:24,154 INFO L226 Difference]: Without dead ends: 379 [2023-12-02 14:28:24,155 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 [2023-12-02 14:28:24,156 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 6 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:24,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2238 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:28:24,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-02 14:28:24,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 377. [2023-12-02 14:28:24,171 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) [2023-12-02 14:28:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 521 transitions. [2023-12-02 14:28:24,173 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 521 transitions. Word has length 213 [2023-12-02 14:28:24,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:24,174 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 521 transitions. [2023-12-02 14:28:24,174 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) [2023-12-02 14:28:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 521 transitions. [2023-12-02 14:28:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-02 14:28:24,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:24,176 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] [2023-12-02 14:28:24,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 14:28:24,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:24,377 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:24,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:24,378 INFO L85 PathProgramCache]: Analyzing trace with hash -517553804, now seen corresponding path program 1 times [2023-12-02 14:28:24,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:24,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124266399] [2023-12-02 14:28:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:24,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 4 proven. 71 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-12-02 14:28:25,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124266399] [2023-12-02 14:28:25,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124266399] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045488436] [2023-12-02 14:28:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:25,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:25,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:25,273 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:25,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 14:28:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:25,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 3252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:28:25,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:26,105 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-02 14:28:26,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045488436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:26,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:28:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-02 14:28:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095424284] [2023-12-02 14:28:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:26,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:28:26,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:28:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-02 14:28:26,108 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) [2023-12-02 14:28:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:26,619 INFO L93 Difference]: Finished difference Result 713 states and 1028 transitions. [2023-12-02 14:28:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:26,620 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 [2023-12-02 14:28:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:26,623 INFO L225 Difference]: With dead ends: 713 [2023-12-02 14:28:26,624 INFO L226 Difference]: Without dead ends: 377 [2023-12-02 14:28:26,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-02 14:28:26,626 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 16 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:26,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2653 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:28:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-02 14:28:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-12-02 14:28:26,644 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) [2023-12-02 14:28:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 520 transitions. [2023-12-02 14:28:26,648 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 520 transitions. Word has length 218 [2023-12-02 14:28:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:26,648 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 520 transitions. [2023-12-02 14:28:26,649 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) [2023-12-02 14:28:26,649 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 520 transitions. [2023-12-02 14:28:26,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-02 14:28:26,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:26,652 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] [2023-12-02 14:28:26,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 14:28:26,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:26,853 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:26,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash -731186188, now seen corresponding path program 1 times [2023-12-02 14:28:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:26,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707359004] [2023-12-02 14:28:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:26,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 5 proven. 77 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-02 14:28:27,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:27,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707359004] [2023-12-02 14:28:27,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707359004] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:27,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480722760] [2023-12-02 14:28:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:27,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:27,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:27,858 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:27,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 14:28:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:28,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 3260 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:28:28,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-12-02 14:28:28,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:28,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480722760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:28,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:28:28,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-02 14:28:28,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840649184] [2023-12-02 14:28:28,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:28,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:28:28,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:28,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:28:28,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-02 14:28:28,571 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) [2023-12-02 14:28:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:29,039 INFO L93 Difference]: Finished difference Result 715 states and 1028 transitions. [2023-12-02 14:28:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:29,040 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 [2023-12-02 14:28:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:29,043 INFO L225 Difference]: With dead ends: 715 [2023-12-02 14:28:29,043 INFO L226 Difference]: Without dead ends: 379 [2023-12-02 14:28:29,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-02 14:28:29,046 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 17 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:29,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2207 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:28:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-02 14:28:29,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 377. [2023-12-02 14:28:29,058 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) [2023-12-02 14:28:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 519 transitions. [2023-12-02 14:28:29,061 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 519 transitions. Word has length 222 [2023-12-02 14:28:29,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:29,061 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 519 transitions. [2023-12-02 14:28:29,061 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) [2023-12-02 14:28:29,061 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 519 transitions. [2023-12-02 14:28:29,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-02 14:28:29,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:29,062 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] [2023-12-02 14:28:29,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 14:28:29,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 14:28:29,263 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:29,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1082647436, now seen corresponding path program 1 times [2023-12-02 14:28:29,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:29,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034133739] [2023-12-02 14:28:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:29,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 83 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-02 14:28:30,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:30,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034133739] [2023-12-02 14:28:30,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034133739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:30,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207949267] [2023-12-02 14:28:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:30,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:30,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:30,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:30,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 14:28:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:30,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 3268 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:28:30,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-12-02 14:28:30,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:30,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207949267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:30,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:28:30,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-12-02 14:28:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918853753] [2023-12-02 14:28:30,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:30,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:28:30,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:28:30,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:28:30,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-12-02 14:28:30,808 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) [2023-12-02 14:28:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:31,245 INFO L93 Difference]: Finished difference Result 715 states and 1026 transitions. [2023-12-02 14:28:31,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:28:31,246 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 226 [2023-12-02 14:28:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:31,249 INFO L225 Difference]: With dead ends: 715 [2023-12-02 14:28:31,249 INFO L226 Difference]: Without dead ends: 379 [2023-12-02 14:28:31,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-02 14:28:31,252 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 17 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:31,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2204 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:28:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-02 14:28:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 377. [2023-12-02 14:28:31,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 196 states have (on average 1.1173469387755102) internal successors, (219), 199 states have internal predecessors, (219), 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) [2023-12-02 14:28:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 518 transitions. [2023-12-02 14:28:31,274 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 518 transitions. Word has length 226 [2023-12-02 14:28:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:31,274 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 518 transitions. [2023-12-02 14:28:31,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-12-02 14:28:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 518 transitions. [2023-12-02 14:28:31,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-02 14:28:31,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:31,276 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 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, 1] [2023-12-02 14:28:31,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 14:28:31,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 14:28:31,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [aws_atomic_priv_xlate_orderErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:31,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:31,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1739798028, now seen corresponding path program 2 times [2023-12-02 14:28:31,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:31,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357195836] [2023-12-02 14:28:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:31,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 14:28:38,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:38,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357195836] [2023-12-02 14:28:38,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357195836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:38,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466337083] [2023-12-02 14:28:38,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:28:38,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:38,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:38,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:38,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c5e819d-9a14-4449-b901-9d48f4a54f2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 14:28:39,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 14:28:39,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:28:39,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 3276 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-02 14:28:39,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:39,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 14:28:40,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2023-12-02 14:28:42,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-12-02 14:28:42,095 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-12-02 14:28:42,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 43 [2023-12-02 14:28:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 219 proven. 8 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-02 14:28:42,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:43,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-12-02 14:28:44,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2023-12-02 14:28:44,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 61 [2023-12-02 14:28:49,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 74 [2023-12-02 14:28:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 14:28:49,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466337083] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:49,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1573804956] [2023-12-02 14:28:49,426 INFO L159 IcfgInterpreter]: Started Sifa with 104 locations of interest [2023-12-02 14:28:49,426 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:28:49,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:28:49,433 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:28:49,434 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs