./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 781bda6fed61385a8a2dfd24d0779b588b4e3a263a6bd1d451e7bf9a103d1f1e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:36:11,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:36:11,433 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 03:36:11,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:36:11,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:36:11,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:36:11,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:36:11,464 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:36:11,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:36:11,465 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:36:11,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:36:11,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:36:11,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:36:11,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:36:11,468 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:36:11,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:36:11,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:36:11,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:36:11,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:36:11,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:36:11,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:36:11,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:36:11,472 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:36:11,473 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:36:11,473 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:36:11,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:36:11,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:36:11,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:36:11,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:36:11,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:36:11,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:36:11,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:36:11,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:36:11,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:36:11,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:36:11,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:36:11,478 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:36:11,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:36:11,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:36:11,479 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781bda6fed61385a8a2dfd24d0779b588b4e3a263a6bd1d451e7bf9a103d1f1e [2023-11-29 03:36:11,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:36:11,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:36:11,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:36:11,720 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:36:11,720 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:36:11,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i [2023-11-29 03:36:14,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:36:14,968 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:36:14,969 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i [2023-11-29 03:36:15,006 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/data/8d77e4314/e8c9affa787e45218cd429c4832c9942/FLAGac9880cb4 [2023-11-29 03:36:15,021 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/data/8d77e4314/e8c9affa787e45218cd429c4832c9942 [2023-11-29 03:36:15,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:36:15,026 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:36:15,027 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:36:15,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:36:15,033 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:36:15,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:36:15" (1/1) ... [2023-11-29 03:36:15,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed75a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:15, skipping insertion in model container [2023-11-29 03:36:15,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:36:15" (1/1) ... [2023-11-29 03:36:15,146 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:36:15,423 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_b64f289f-ac05-4095-8d86-b0d907b5c7ee/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i[4499,4512] [2023-11-29 03:36:15,433 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_b64f289f-ac05-4095-8d86-b0d907b5c7ee/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i[4559,4572] [2023-11-29 03:36:16,489 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:16,490 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:16,491 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:16,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:16,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:16,532 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:16,533 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:16,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:16,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:16,940 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 03:36:16,942 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 03:36:16,943 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 03:36:16,944 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 03:36:16,946 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 03:36:16,946 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 03:36:16,947 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 03:36:16,948 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 03:36:16,949 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 03:36:16,949 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 03:36:17,209 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,209 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,278 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:36:17,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:36:17,346 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_b64f289f-ac05-4095-8d86-b0d907b5c7ee/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i[4499,4512] [2023-11-29 03:36:17,346 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_b64f289f-ac05-4095-8d86-b0d907b5c7ee/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be64_harness_negated.i[4559,4572] [2023-11-29 03:36:17,380 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,380 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,381 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,381 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,382 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,389 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,390 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,391 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,391 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,425 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 03:36:17,425 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 03:36:17,426 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 03:36:17,426 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 03:36:17,427 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 03:36:17,428 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 03:36:17,428 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 03:36:17,429 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 03:36:17,429 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 03:36:17,430 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 03:36:17,497 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-29 03:36:17,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 03:36:17,512 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8723-8734] [2023-11-29 03:36:17,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:36:17,749 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,749 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,750 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,750 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,750 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,750 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,750 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,751 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,751 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,751 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,751 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,751 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,752 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,752 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,752 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,752 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,752 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,752 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:36:17,758 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:36:17,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17 WrapperNode [2023-11-29 03:36:17,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:36:17,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:36:17,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:36:17,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:36:17,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:17,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:17,932 INFO L138 Inliner]: procedures = 690, calls = 2648, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1022 [2023-11-29 03:36:17,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:36:17,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:36:17,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:36:17,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:36:17,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:17,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:17,956 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:18,077 INFO L175 MemorySlicer]: Split 569 memory accesses to 10 slices as follows [2, 5, 8, 256, 4, 37, 246, 6, 3, 2]. 45 percent of accesses are in the largest equivalence class. The 509 initializations are split as follows [2, 5, 2, 256, 2, 2, 236, 0, 3, 1]. The 15 writes are split as follows [0, 0, 0, 0, 0, 9, 4, 2, 0, 0]. [2023-11-29 03:36:18,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:18,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:18,131 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:18,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:18,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:18,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:18,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:36:18,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:36:18,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:36:18,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:36:18,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (1/1) ... [2023-11-29 03:36:18,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:36:18,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:18,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:36:18,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:36:18,262 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2023-11-29 03:36:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2023-11-29 03:36:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2023-11-29 03:36:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2023-11-29 03:36:18,263 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2023-11-29 03:36:18,263 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-29 03:36:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-29 03:36:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:36:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-29 03:36:18,264 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-29 03:36:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2023-11-29 03:36:18,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2023-11-29 03:36:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2023-11-29 03:36:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2023-11-29 03:36:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2023-11-29 03:36:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2023-11-29 03:36:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#6 [2023-11-29 03:36:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#7 [2023-11-29 03:36:18,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#8 [2023-11-29 03:36:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#9 [2023-11-29 03:36:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-29 03:36:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-29 03:36:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-29 03:36:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-29 03:36:18,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-29 03:36:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-29 03:36:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-29 03:36:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2023-11-29 03:36:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2023-11-29 03:36:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2023-11-29 03:36:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-29 03:36:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-29 03:36:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-29 03:36:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-29 03:36:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-29 03:36:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-29 03:36:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-29 03:36:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-29 03:36:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-11-29 03:36:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-11-29 03:36:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh64 [2023-11-29 03:36:18,269 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh64 [2023-11-29 03:36:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:36:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:36:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:36:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:36:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:36:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 03:36:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 03:36:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 03:36:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-29 03:36:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-29 03:36:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-29 03:36:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-29 03:36:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-29 03:36:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-29 03:36:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-29 03:36:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-29 03:36:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-29 03:36:18,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2023-11-29 03:36:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#8 [2023-11-29 03:36:18,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#9 [2023-11-29 03:36:18,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-29 03:36:18,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-29 03:36:18,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-29 03:36:18,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-29 03:36:18,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-29 03:36:18,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-29 03:36:18,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-29 03:36:18,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2023-11-29 03:36:18,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#8 [2023-11-29 03:36:18,273 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#9 [2023-11-29 03:36:18,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 03:36:18,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 03:36:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:36:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:36:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 03:36:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 03:36:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 03:36:18,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 03:36:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 03:36:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 03:36:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 03:36:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-29 03:36:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-29 03:36:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-29 03:36:18,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:36:18,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:36:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 03:36:18,276 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 03:36:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-29 03:36:18,276 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-29 03:36:18,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-29 03:36:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-29 03:36:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-29 03:36:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-29 03:36:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-29 03:36:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-29 03:36:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-29 03:36:18,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2023-11-29 03:36:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2023-11-29 03:36:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2023-11-29 03:36:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-29 03:36:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-29 03:36:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-29 03:36:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-29 03:36:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-29 03:36:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-29 03:36:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-29 03:36:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-29 03:36:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2023-11-29 03:36:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2023-11-29 03:36:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-29 03:36:18,279 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-29 03:36:18,279 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:36:18,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:36:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:36:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 03:36:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 03:36:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 03:36:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 03:36:18,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 03:36:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 03:36:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 03:36:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-29 03:36:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-29 03:36:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-29 03:36:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 03:36:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 03:36:18,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 03:36:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 03:36:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 03:36:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 03:36:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-29 03:36:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-29 03:36:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-29 03:36:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-29 03:36:18,282 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-29 03:36:18,283 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-29 03:36:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:36:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:36:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:36:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:36:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:36:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 03:36:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 03:36:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 03:36:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-29 03:36:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-29 03:36:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2023-11-29 03:36:18,284 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2023-11-29 03:36:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2023-11-29 03:36:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2023-11-29 03:36:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2023-11-29 03:36:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2023-11-29 03:36:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2023-11-29 03:36:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2023-11-29 03:36:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#6 [2023-11-29 03:36:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#7 [2023-11-29 03:36:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#8 [2023-11-29 03:36:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#9 [2023-11-29 03:36:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:36:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:36:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:36:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:36:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:36:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 03:36:18,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 03:36:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 03:36:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 03:36:18,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 03:36:18,673 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:36:18,676 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:36:20,321 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:36:20,463 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:36:20,464 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 03:36:20,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:36:20 BoogieIcfgContainer [2023-11-29 03:36:20,464 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:36:20,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:36:20,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:36:20,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:36:20,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:36:15" (1/3) ... [2023-11-29 03:36:20,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516e5521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:36:20, skipping insertion in model container [2023-11-29 03:36:20,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:36:17" (2/3) ... [2023-11-29 03:36:20,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516e5521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:36:20, skipping insertion in model container [2023-11-29 03:36:20,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:36:20" (3/3) ... [2023-11-29 03:36:20,473 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be64_harness_negated.i [2023-11-29 03:36:20,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:36:20,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:36:20,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:36:20,557 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=PETRI_NET, 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;@4dc824f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:36:20,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:36:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 107 states have (on average 1.3457943925233644) internal successors, (144), 108 states have internal predecessors, (144), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-29 03:36:20,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 03:36:20,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:20,580 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:20,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:20,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:20,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1857070769, now seen corresponding path program 1 times [2023-11-29 03:36:20,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:20,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221325981] [2023-11-29 03:36:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:20,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:21,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:21,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:21,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:36:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:21,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 03:36:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:36:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 03:36:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:21,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:36:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:21,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 03:36:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:21,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 03:36:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:21,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 03:36:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:36:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 03:36:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 03:36:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 03:36:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 03:36:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 03:36:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 03:36:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 03:36:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 03:36:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-29 03:36:22,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:22,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221325981] [2023-11-29 03:36:22,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221325981] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:22,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869714004] [2023-11-29 03:36:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:22,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:22,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:22,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:22,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:36:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:22,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:36:22,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-29 03:36:22,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:36:22,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869714004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:36:22,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:36:22,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2023-11-29 03:36:22,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655160339] [2023-11-29 03:36:22,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:36:22,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:36:22,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:22,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:36:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:36:22,954 INFO L87 Difference]: Start difference. First operand has 172 states, 107 states have (on average 1.3457943925233644) internal successors, (144), 108 states have internal predecessors, (144), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 03:36:23,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:23,128 INFO L93 Difference]: Finished difference Result 338 states and 509 transitions. [2023-11-29 03:36:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:36:23,131 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 122 [2023-11-29 03:36:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:23,141 INFO L225 Difference]: With dead ends: 338 [2023-11-29 03:36:23,142 INFO L226 Difference]: Without dead ends: 170 [2023-11-29 03:36:23,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:36:23,151 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:23,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:36:23,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-29 03:36:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-29 03:36:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 106 states have (on average 1.330188679245283) internal successors, (141), 107 states have internal predecessors, (141), 50 states have call successors, (50), 13 states have call predecessors, (50), 13 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-29 03:36:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 240 transitions. [2023-11-29 03:36:23,204 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 240 transitions. Word has length 122 [2023-11-29 03:36:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:36:23,205 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 240 transitions. [2023-11-29 03:36:23,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 03:36:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 240 transitions. [2023-11-29 03:36:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 03:36:23,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:23,210 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:23,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:36:23,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:23,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:23,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:23,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1007777433, now seen corresponding path program 1 times [2023-11-29 03:36:23,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:23,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054757394] [2023-11-29 03:36:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:23,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:36:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 03:36:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:36:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 03:36:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:36:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 03:36:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 03:36:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 03:36:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:36:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 03:36:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 03:36:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 03:36:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 03:36:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 03:36:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 03:36:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 03:36:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 03:36:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-29 03:36:24,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:24,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054757394] [2023-11-29 03:36:24,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054757394] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:24,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367347047] [2023-11-29 03:36:24,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:24,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:24,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:24,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:24,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:36:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:25,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:36:25,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-29 03:36:25,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:36:25,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367347047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:36:25,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:36:25,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 03:36:25,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027601895] [2023-11-29 03:36:25,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:36:25,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:36:25,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:25,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:36:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:36:25,145 INFO L87 Difference]: Start difference. First operand 170 states and 240 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 03:36:25,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:25,638 INFO L93 Difference]: Finished difference Result 320 states and 463 transitions. [2023-11-29 03:36:25,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:36:25,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 122 [2023-11-29 03:36:25,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:25,643 INFO L225 Difference]: With dead ends: 320 [2023-11-29 03:36:25,644 INFO L226 Difference]: Without dead ends: 172 [2023-11-29 03:36:25,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:36:25,646 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 46 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:25,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 743 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:36:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-29 03:36:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-11-29 03:36:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 107 states have (on average 1.3271028037383177) internal successors, (142), 109 states have internal predecessors, (142), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2023-11-29 03:36:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 249 transitions. [2023-11-29 03:36:25,670 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 249 transitions. Word has length 122 [2023-11-29 03:36:25,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:36:25,671 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 249 transitions. [2023-11-29 03:36:25,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 03:36:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 249 transitions. [2023-11-29 03:36:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 03:36:25,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:25,675 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:25,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:36:25,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:25,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:25,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash 498579106, now seen corresponding path program 1 times [2023-11-29 03:36:25,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:25,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030566200] [2023-11-29 03:36:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:25,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:36:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 03:36:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:36:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:36:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:36:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 03:36:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 03:36:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 03:36:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 03:36:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:36:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 03:36:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 03:36:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 03:36:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 03:36:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 03:36:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 03:36:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 03:36:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-29 03:36:26,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:26,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030566200] [2023-11-29 03:36:26,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030566200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:26,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116522264] [2023-11-29 03:36:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:26,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:26,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:26,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:26,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:36:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:27,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 2780 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:36:27,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-29 03:36:27,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:36:27,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116522264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:36:27,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:36:27,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-29 03:36:27,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034746392] [2023-11-29 03:36:27,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:36:27,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:36:27,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:36:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:36:27,790 INFO L87 Difference]: Start difference. First operand 172 states and 249 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-29 03:36:28,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:28,139 INFO L93 Difference]: Finished difference Result 306 states and 444 transitions. [2023-11-29 03:36:28,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:36:28,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 124 [2023-11-29 03:36:28,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:28,143 INFO L225 Difference]: With dead ends: 306 [2023-11-29 03:36:28,143 INFO L226 Difference]: Without dead ends: 172 [2023-11-29 03:36:28,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:36:28,145 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 45 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:28,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 946 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:36:28,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-29 03:36:28,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-11-29 03:36:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 107 states have (on average 1.3271028037383177) internal successors, (142), 109 states have internal predecessors, (142), 50 states have call successors, (50), 13 states have call predecessors, (50), 14 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2023-11-29 03:36:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 247 transitions. [2023-11-29 03:36:28,167 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 247 transitions. Word has length 124 [2023-11-29 03:36:28,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:36:28,168 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 247 transitions. [2023-11-29 03:36:28,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-29 03:36:28,169 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 247 transitions. [2023-11-29 03:36:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 03:36:28,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:28,171 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:28,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:36:28,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:28,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:28,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:28,373 INFO L85 PathProgramCache]: Analyzing trace with hash 153654941, now seen corresponding path program 2 times [2023-11-29 03:36:28,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:28,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295595372] [2023-11-29 03:36:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:28,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:36:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 03:36:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:36:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:36:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:36:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 03:36:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 03:36:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 03:36:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 03:36:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 03:36:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 03:36:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 03:36:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 03:36:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 03:36:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 03:36:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 03:36:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 03:36:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-29 03:36:29,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:29,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295595372] [2023-11-29 03:36:29,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295595372] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780632261] [2023-11-29 03:36:29,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:36:29,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:29,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:29,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:29,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:36:29,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:36:29,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:36:29,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 2291 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:36:30,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-29 03:36:30,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:36:30,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780632261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:36:30,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:36:30,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 03:36:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790221621] [2023-11-29 03:36:30,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:36:30,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:36:30,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:36:30,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:36:30,092 INFO L87 Difference]: Start difference. First operand 172 states and 247 transitions. Second operand has 7 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-29 03:36:30,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:30,562 INFO L93 Difference]: Finished difference Result 180 states and 255 transitions. [2023-11-29 03:36:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:36:30,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 126 [2023-11-29 03:36:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:30,565 INFO L225 Difference]: With dead ends: 180 [2023-11-29 03:36:30,565 INFO L226 Difference]: Without dead ends: 178 [2023-11-29 03:36:30,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:36:30,567 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 5 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:30,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1319 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:36:30,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-29 03:36:30,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2023-11-29 03:36:30,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 112 states have internal predecessors, (145), 51 states have call successors, (51), 14 states have call predecessors, (51), 15 states have return successors, (56), 50 states have call predecessors, (56), 50 states have call successors, (56) [2023-11-29 03:36:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 252 transitions. [2023-11-29 03:36:30,585 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 252 transitions. Word has length 126 [2023-11-29 03:36:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:36:30,586 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 252 transitions. [2023-11-29 03:36:30,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-29 03:36:30,586 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 252 transitions. [2023-11-29 03:36:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 03:36:30,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:30,588 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:30,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 03:36:30,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-29 03:36:30,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:30,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:30,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1208660456, now seen corresponding path program 3 times [2023-11-29 03:36:30,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:30,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185506461] [2023-11-29 03:36:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:30,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:36:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 03:36:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:36:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:36:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:36:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 03:36:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 03:36:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 03:36:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 03:36:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 03:36:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 03:36:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 03:36:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 03:36:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 03:36:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 03:36:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 03:36:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 03:36:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-29 03:36:31,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:31,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185506461] [2023-11-29 03:36:31,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185506461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:31,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394245167] [2023-11-29 03:36:31,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:36:31,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:31,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:31,648 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:31,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:36:32,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 03:36:32,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:36:32,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 2397 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:36:32,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-29 03:36:32,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:36:32,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394245167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:36:32,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:36:32,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 03:36:32,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588614274] [2023-11-29 03:36:32,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:36:32,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:36:32,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:32,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:36:32,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:36:32,595 INFO L87 Difference]: Start difference. First operand 177 states and 252 transitions. Second operand has 7 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 03:36:33,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:33,087 INFO L93 Difference]: Finished difference Result 305 states and 432 transitions. [2023-11-29 03:36:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:36:33,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 128 [2023-11-29 03:36:33,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:33,091 INFO L225 Difference]: With dead ends: 305 [2023-11-29 03:36:33,092 INFO L226 Difference]: Without dead ends: 177 [2023-11-29 03:36:33,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:36:33,094 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 2 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:33,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1244 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:36:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-29 03:36:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-11-29 03:36:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 112 states have internal predecessors, (145), 51 states have call successors, (51), 14 states have call predecessors, (51), 15 states have return successors, (55), 50 states have call predecessors, (55), 50 states have call successors, (55) [2023-11-29 03:36:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 251 transitions. [2023-11-29 03:36:33,113 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 251 transitions. Word has length 128 [2023-11-29 03:36:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:36:33,114 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 251 transitions. [2023-11-29 03:36:33,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 03:36:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 251 transitions. [2023-11-29 03:36:33,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 03:36:33,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:33,117 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:33,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:36:33,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:33,318 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:33,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash 304521597, now seen corresponding path program 4 times [2023-11-29 03:36:33,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:33,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237966063] [2023-11-29 03:36:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:33,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:33,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:36:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 03:36:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:36:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:36:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:36:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 03:36:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 03:36:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 03:36:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 03:36:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 03:36:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 03:36:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 03:36:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 03:36:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 03:36:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 03:36:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 03:36:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 03:36:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-29 03:36:34,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:34,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237966063] [2023-11-29 03:36:34,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237966063] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:34,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470280395] [2023-11-29 03:36:34,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:36:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:34,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:34,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:36:34,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:36:34,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:36:34,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:36:34,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 03:36:35,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:36:35,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470280395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:36:35,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:36:35,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-29 03:36:35,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586057301] [2023-11-29 03:36:35,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:36:35,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:36:35,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:36:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:36:35,137 INFO L87 Difference]: Start difference. First operand 177 states and 251 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-29 03:36:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:35,630 INFO L93 Difference]: Finished difference Result 310 states and 439 transitions. [2023-11-29 03:36:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:36:35,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 130 [2023-11-29 03:36:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:35,633 INFO L225 Difference]: With dead ends: 310 [2023-11-29 03:36:35,633 INFO L226 Difference]: Without dead ends: 177 [2023-11-29 03:36:35,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:36:35,635 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 137 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:35,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1072 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:36:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-29 03:36:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-11-29 03:36:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 112 states have internal predecessors, (145), 51 states have call successors, (51), 14 states have call predecessors, (51), 15 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2023-11-29 03:36:35,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 248 transitions. [2023-11-29 03:36:35,650 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 248 transitions. Word has length 130 [2023-11-29 03:36:35,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:36:35,651 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 248 transitions. [2023-11-29 03:36:35,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-29 03:36:35,652 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 248 transitions. [2023-11-29 03:36:35,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 03:36:35,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:35,654 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:35,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:36:35,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:35,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:35,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:35,855 INFO L85 PathProgramCache]: Analyzing trace with hash -971838024, now seen corresponding path program 1 times [2023-11-29 03:36:35,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:35,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762616482] [2023-11-29 03:36:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:35,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:36:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 03:36:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:36:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:36:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:36:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 03:36:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 03:36:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 03:36:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 03:36:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 03:36:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 03:36:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 03:36:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 03:36:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 03:36:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 03:36:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 03:36:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 03:36:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-29 03:36:36,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762616482] [2023-11-29 03:36:36,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762616482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:36:36,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:36:36,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:36:36,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124429776] [2023-11-29 03:36:36,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:36:36,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:36:36,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:36:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:36:36,730 INFO L87 Difference]: Start difference. First operand 177 states and 248 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 03:36:38,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:38,058 INFO L93 Difference]: Finished difference Result 335 states and 472 transitions. [2023-11-29 03:36:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:36:38,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2023-11-29 03:36:38,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:38,061 INFO L225 Difference]: With dead ends: 335 [2023-11-29 03:36:38,061 INFO L226 Difference]: Without dead ends: 192 [2023-11-29 03:36:38,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:36:38,062 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 158 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:38,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 498 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:36:38,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-29 03:36:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2023-11-29 03:36:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 112 states have (on average 1.3303571428571428) internal successors, (149), 115 states have internal predecessors, (149), 51 states have call successors, (51), 14 states have call predecessors, (51), 16 states have return successors, (53), 50 states have call predecessors, (53), 50 states have call successors, (53) [2023-11-29 03:36:38,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 253 transitions. [2023-11-29 03:36:38,079 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 253 transitions. Word has length 132 [2023-11-29 03:36:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:36:38,079 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 253 transitions. [2023-11-29 03:36:38,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 03:36:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 253 transitions. [2023-11-29 03:36:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 03:36:38,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:38,082 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:38,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:36:38,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:38,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:38,083 INFO L85 PathProgramCache]: Analyzing trace with hash -919892979, now seen corresponding path program 1 times [2023-11-29 03:36:38,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:38,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956455336] [2023-11-29 03:36:38,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:38,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:39,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:39,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:39,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:36:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:39,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 03:36:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:36:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:36:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:39,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:36:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 03:36:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:39,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 03:36:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:39,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:36:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 03:36:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 03:36:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 03:36:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 03:36:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 03:36:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 03:36:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 03:36:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 03:36:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 03:36:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-29 03:36:40,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:40,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956455336] [2023-11-29 03:36:40,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956455336] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:40,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430682079] [2023-11-29 03:36:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:40,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:40,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:40,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:40,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:36:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:40,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:36:40,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-29 03:36:41,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:36:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-29 03:36:41,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430682079] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:41,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:36:41,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13, 5] total 17 [2023-11-29 03:36:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513584218] [2023-11-29 03:36:41,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:36:41,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:36:41,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:41,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:36:41,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:36:41,222 INFO L87 Difference]: Start difference. First operand 180 states and 253 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 03:36:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:41,629 INFO L93 Difference]: Finished difference Result 332 states and 472 transitions. [2023-11-29 03:36:41,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:36:41,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 133 [2023-11-29 03:36:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:41,632 INFO L225 Difference]: With dead ends: 332 [2023-11-29 03:36:41,632 INFO L226 Difference]: Without dead ends: 185 [2023-11-29 03:36:41,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:36:41,634 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 4 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:41,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 662 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:36:41,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-29 03:36:41,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2023-11-29 03:36:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 115 states have (on average 1.3217391304347825) internal successors, (152), 117 states have internal predecessors, (152), 51 states have call successors, (51), 15 states have call predecessors, (51), 16 states have return successors, (53), 50 states have call predecessors, (53), 50 states have call successors, (53) [2023-11-29 03:36:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 256 transitions. [2023-11-29 03:36:41,652 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 256 transitions. Word has length 133 [2023-11-29 03:36:41,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:36:41,653 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 256 transitions. [2023-11-29 03:36:41,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 03:36:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 256 transitions. [2023-11-29 03:36:41,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 03:36:41,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:41,656 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:41,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:36:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:41,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:41,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1460984858, now seen corresponding path program 1 times [2023-11-29 03:36:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:41,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046692971] [2023-11-29 03:36:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:41,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:36:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 03:36:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:36:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 03:36:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:36:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 03:36:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 03:36:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 03:36:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 03:36:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 03:36:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 03:36:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 03:36:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 03:36:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 03:36:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 03:36:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 03:36:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 03:36:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-29 03:36:43,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:43,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046692971] [2023-11-29 03:36:43,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046692971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:43,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900781771] [2023-11-29 03:36:43,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:43,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:43,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:43,873 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:43,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:36:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:44,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 03:36:44,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:44,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 03:36:45,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:36:45,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2023-11-29 03:36:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 80 proven. 4 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 03:36:45,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:36:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-29 03:36:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900781771] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:36:46,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:36:46,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 16] total 40 [2023-11-29 03:36:46,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698578300] [2023-11-29 03:36:46,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:36:46,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 03:36:46,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:46,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 03:36:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1438, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 03:36:46,252 INFO L87 Difference]: Start difference. First operand 183 states and 256 transitions. Second operand has 40 states, 32 states have (on average 3.59375) internal successors, (115), 29 states have internal predecessors, (115), 12 states have call successors, (62), 7 states have call predecessors, (62), 9 states have return successors, (57), 13 states have call predecessors, (57), 11 states have call successors, (57) [2023-11-29 03:36:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:55,432 INFO L93 Difference]: Finished difference Result 387 states and 549 transitions. [2023-11-29 03:36:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 03:36:55,433 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 3.59375) internal successors, (115), 29 states have internal predecessors, (115), 12 states have call successors, (62), 7 states have call predecessors, (62), 9 states have return successors, (57), 13 states have call predecessors, (57), 11 states have call successors, (57) Word has length 134 [2023-11-29 03:36:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:55,435 INFO L225 Difference]: With dead ends: 387 [2023-11-29 03:36:55,435 INFO L226 Difference]: Without dead ends: 201 [2023-11-29 03:36:55,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=351, Invalid=3681, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 03:36:55,438 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 242 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 4335 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 4489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 4335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:55,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 3074 Invalid, 4489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 4335 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-29 03:36:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-29 03:36:55,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2023-11-29 03:36:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 119 states have (on average 1.3025210084033614) internal successors, (155), 121 states have internal predecessors, (155), 52 states have call successors, (52), 16 states have call predecessors, (52), 17 states have return successors, (62), 51 states have call predecessors, (62), 50 states have call successors, (62) [2023-11-29 03:36:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 269 transitions. [2023-11-29 03:36:55,457 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 269 transitions. Word has length 134 [2023-11-29 03:36:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:36:55,457 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 269 transitions. [2023-11-29 03:36:55,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 3.59375) internal successors, (115), 29 states have internal predecessors, (115), 12 states have call successors, (62), 7 states have call predecessors, (62), 9 states have return successors, (57), 13 states have call predecessors, (57), 11 states have call successors, (57) [2023-11-29 03:36:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 269 transitions. [2023-11-29 03:36:55,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 03:36:55,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:55,460 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:55,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:36:55,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:55,666 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:55,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash -293595540, now seen corresponding path program 1 times [2023-11-29 03:36:55,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:55,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832845675] [2023-11-29 03:36:55,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:55,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:36:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:36:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 03:36:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:36:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 03:36:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:36:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 03:36:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:36:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 03:36:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 03:36:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 03:36:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 03:36:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 03:36:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 03:36:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 03:36:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 03:36:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 03:36:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 03:36:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-29 03:36:56,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:56,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832845675] [2023-11-29 03:36:56,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832845675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:56,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600305739] [2023-11-29 03:36:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:56,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:56,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:56,705 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:56,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:36:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:57,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 3001 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:36:57,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-11-29 03:36:57,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:36:57,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600305739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:36:57,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:36:57,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-29 03:36:57,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632647504] [2023-11-29 03:36:57,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:36:57,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:36:57,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:36:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:36:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:36:57,580 INFO L87 Difference]: Start difference. First operand 189 states and 269 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:36:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:36:58,199 INFO L93 Difference]: Finished difference Result 356 states and 522 transitions. [2023-11-29 03:36:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:36:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2023-11-29 03:36:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:36:58,202 INFO L225 Difference]: With dead ends: 356 [2023-11-29 03:36:58,202 INFO L226 Difference]: Without dead ends: 189 [2023-11-29 03:36:58,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:36:58,204 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 10 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:36:58,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 619 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:36:58,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-29 03:36:58,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-11-29 03:36:58,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 121 states have internal predecessors, (154), 52 states have call successors, (52), 16 states have call predecessors, (52), 17 states have return successors, (62), 51 states have call predecessors, (62), 50 states have call successors, (62) [2023-11-29 03:36:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 268 transitions. [2023-11-29 03:36:58,221 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 268 transitions. Word has length 148 [2023-11-29 03:36:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:36:58,222 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 268 transitions. [2023-11-29 03:36:58,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:36:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 268 transitions. [2023-11-29 03:36:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 03:36:58,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:36:58,224 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:36:58,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:36:58,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:36:58,425 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:36:58,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:36:58,425 INFO L85 PathProgramCache]: Analyzing trace with hash 988576746, now seen corresponding path program 1 times [2023-11-29 03:36:58,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:36:58,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702161422] [2023-11-29 03:36:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:58,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:36:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:58,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:58,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:36:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:36:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:58,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 03:36:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:36:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:58,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 03:36:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:58,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:36:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 03:36:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 03:36:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 03:36:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:36:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 03:36:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 03:36:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 03:36:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 03:36:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 03:36:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 03:36:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 03:36:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 03:36:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 03:36:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-29 03:36:59,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:36:59,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702161422] [2023-11-29 03:36:59,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702161422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:36:59,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948336659] [2023-11-29 03:36:59,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:36:59,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:36:59,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:36:59,260 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:36:59,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:36:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:36:59,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 03:36:59,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:36:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-29 03:36:59,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:36:59,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948336659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:00,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:37:00,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2023-11-29 03:37:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605905989] [2023-11-29 03:37:00,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:00,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:37:00,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:00,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:37:00,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:37:00,002 INFO L87 Difference]: Start difference. First operand 189 states and 268 transitions. Second operand has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-29 03:37:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:00,716 INFO L93 Difference]: Finished difference Result 360 states and 522 transitions. [2023-11-29 03:37:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:37:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 148 [2023-11-29 03:37:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:00,718 INFO L225 Difference]: With dead ends: 360 [2023-11-29 03:37:00,719 INFO L226 Difference]: Without dead ends: 193 [2023-11-29 03:37:00,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:37:00,720 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 12 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:00,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1688 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:37:00,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-29 03:37:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-29 03:37:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 122 states have (on average 1.2868852459016393) internal successors, (157), 125 states have internal predecessors, (157), 52 states have call successors, (52), 16 states have call predecessors, (52), 18 states have return successors, (71), 51 states have call predecessors, (71), 50 states have call successors, (71) [2023-11-29 03:37:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 280 transitions. [2023-11-29 03:37:00,738 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 280 transitions. Word has length 148 [2023-11-29 03:37:00,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:00,739 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 280 transitions. [2023-11-29 03:37:00,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-29 03:37:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 280 transitions. [2023-11-29 03:37:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 03:37:00,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:00,742 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:00,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:37:00,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 03:37:00,944 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:00,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:00,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1940161285, now seen corresponding path program 1 times [2023-11-29 03:37:00,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:00,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408401980] [2023-11-29 03:37:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:00,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:37:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:37:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 03:37:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 03:37:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 03:37:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 03:37:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 03:37:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 03:37:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 03:37:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 03:37:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 03:37:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 03:37:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 03:37:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 03:37:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 03:37:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 03:37:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 03:37:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 03:37:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-29 03:37:01,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:01,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408401980] [2023-11-29 03:37:01,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408401980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:37:01,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195862544] [2023-11-29 03:37:01,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:01,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:01,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:01,836 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:01,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:37:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:02,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 3011 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:37:02,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-11-29 03:37:02,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:37:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195862544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:02,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:37:02,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 03:37:02,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59823640] [2023-11-29 03:37:02,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:02,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:37:02,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:02,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:37:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:37:02,551 INFO L87 Difference]: Start difference. First operand 193 states and 280 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:37:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:03,632 INFO L93 Difference]: Finished difference Result 364 states and 544 transitions. [2023-11-29 03:37:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:37:03,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 150 [2023-11-29 03:37:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:03,635 INFO L225 Difference]: With dead ends: 364 [2023-11-29 03:37:03,636 INFO L226 Difference]: Without dead ends: 193 [2023-11-29 03:37:03,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:37:03,638 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 16 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:03,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 823 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:37:03,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-29 03:37:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-29 03:37:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 122 states have (on average 1.278688524590164) internal successors, (156), 125 states have internal predecessors, (156), 52 states have call successors, (52), 16 states have call predecessors, (52), 18 states have return successors, (71), 51 states have call predecessors, (71), 50 states have call successors, (71) [2023-11-29 03:37:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 279 transitions. [2023-11-29 03:37:03,657 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 279 transitions. Word has length 150 [2023-11-29 03:37:03,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:03,658 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 279 transitions. [2023-11-29 03:37:03,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 03:37:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 279 transitions. [2023-11-29 03:37:03,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 03:37:03,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:03,661 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:03,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:37:03,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 03:37:03,861 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:03,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:03,862 INFO L85 PathProgramCache]: Analyzing trace with hash 97685571, now seen corresponding path program 1 times [2023-11-29 03:37:03,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:03,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381642048] [2023-11-29 03:37:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:03,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:37:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:37:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 03:37:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 03:37:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 03:37:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 03:37:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 03:37:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 03:37:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 03:37:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 03:37:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 03:37:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 03:37:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 03:37:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 03:37:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 03:37:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 03:37:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 03:37:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 03:37:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-29 03:37:04,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:04,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381642048] [2023-11-29 03:37:04,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381642048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:37:04,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218660157] [2023-11-29 03:37:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:04,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:04,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:04,656 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:04,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:37:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:05,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 03:37:05,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:06,859 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 25 treesize of output 17 [2023-11-29 03:37:06,864 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 17 treesize of output 9 [2023-11-29 03:37:06,870 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 21 treesize of output 13 [2023-11-29 03:37:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-29 03:37:06,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:37:06,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218660157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:06,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:37:06,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 18 [2023-11-29 03:37:06,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207198263] [2023-11-29 03:37:06,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:06,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:37:06,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:06,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:37:06,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:37:06,913 INFO L87 Difference]: Start difference. First operand 193 states and 279 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 03:37:11,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:37:15,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:37:19,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:37:24,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:37:28,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:37:32,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:37:36,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:37:40,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:37:45,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:37:45,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:45,449 INFO L93 Difference]: Finished difference Result 405 states and 566 transitions. [2023-11-29 03:37:45,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:37:45,450 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 150 [2023-11-29 03:37:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:45,452 INFO L225 Difference]: With dead ends: 405 [2023-11-29 03:37:45,452 INFO L226 Difference]: Without dead ends: 240 [2023-11-29 03:37:45,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 176 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:37:45,453 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 314 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 63 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:45,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 777 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 777 Invalid, 9 Unknown, 0 Unchecked, 37.8s Time] [2023-11-29 03:37:45,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-29 03:37:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 226. [2023-11-29 03:37:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 148 states have (on average 1.2635135135135136) internal successors, (187), 151 states have internal predecessors, (187), 54 states have call successors, (54), 21 states have call predecessors, (54), 23 states have return successors, (66), 53 states have call predecessors, (66), 52 states have call successors, (66) [2023-11-29 03:37:45,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 307 transitions. [2023-11-29 03:37:45,471 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 307 transitions. Word has length 150 [2023-11-29 03:37:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:45,472 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 307 transitions. [2023-11-29 03:37:45,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 03:37:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 307 transitions. [2023-11-29 03:37:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-29 03:37:45,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:45,474 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:45,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:37:45,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:37:45,674 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:45,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash -565462813, now seen corresponding path program 1 times [2023-11-29 03:37:45,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:45,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83574293] [2023-11-29 03:37:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:45,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:37:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:37:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 03:37:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 03:37:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 03:37:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 03:37:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 03:37:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 03:37:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 03:37:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 03:37:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 03:37:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 03:37:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 03:37:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 03:37:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 03:37:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 03:37:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 03:37:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 03:37:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 03:37:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-11-29 03:37:46,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:46,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83574293] [2023-11-29 03:37:46,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83574293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:37:46,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:37:46,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:37:46,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560159901] [2023-11-29 03:37:46,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:37:46,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:37:46,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:46,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:37:46,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:37:46,924 INFO L87 Difference]: Start difference. First operand 226 states and 307 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-29 03:37:48,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:37:48,679 INFO L93 Difference]: Finished difference Result 442 states and 606 transitions. [2023-11-29 03:37:48,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:37:48,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 156 [2023-11-29 03:37:48,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:37:48,682 INFO L225 Difference]: With dead ends: 442 [2023-11-29 03:37:48,682 INFO L226 Difference]: Without dead ends: 236 [2023-11-29 03:37:48,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:37:48,683 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 147 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:37:48,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 679 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 03:37:48,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-29 03:37:48,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 226. [2023-11-29 03:37:48,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 148 states have (on average 1.2567567567567568) internal successors, (186), 151 states have internal predecessors, (186), 54 states have call successors, (54), 21 states have call predecessors, (54), 23 states have return successors, (66), 53 states have call predecessors, (66), 52 states have call successors, (66) [2023-11-29 03:37:48,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 306 transitions. [2023-11-29 03:37:48,731 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 306 transitions. Word has length 156 [2023-11-29 03:37:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:37:48,731 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 306 transitions. [2023-11-29 03:37:48,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-29 03:37:48,732 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 306 transitions. [2023-11-29 03:37:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-29 03:37:48,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:37:48,734 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:37:48,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:37:48,734 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:37:48,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:37:48,735 INFO L85 PathProgramCache]: Analyzing trace with hash 884961958, now seen corresponding path program 1 times [2023-11-29 03:37:48,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:37:48,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380367470] [2023-11-29 03:37:48,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:48,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:37:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:37:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:37:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:37:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:37:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:37:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:37:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:37:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:37:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:37:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:37:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 03:37:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:37:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 03:37:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 03:37:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 03:37:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 03:37:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 03:37:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 03:37:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-29 03:37:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 03:37:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 03:37:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-29 03:37:49,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:37:49,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380367470] [2023-11-29 03:37:49,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380367470] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:37:49,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372102501] [2023-11-29 03:37:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:37:49,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:37:49,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:37:49,610 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:37:49,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:37:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:37:50,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 3097 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 03:37:50,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:37:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 154 proven. 14 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-11-29 03:37:51,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:37:52,428 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 03:37:52,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2023-11-29 03:37:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-29 03:37:52,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372102501] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:37:52,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:37:52,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 14] total 30 [2023-11-29 03:37:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713716110] [2023-11-29 03:37:52,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:37:52,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 03:37:52,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:37:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 03:37:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:37:52,463 INFO L87 Difference]: Start difference. First operand 226 states and 306 transitions. Second operand has 30 states, 28 states have (on average 5.357142857142857) internal successors, (150), 26 states have internal predecessors, (150), 12 states have call successors, (70), 7 states have call predecessors, (70), 7 states have return successors, (62), 10 states have call predecessors, (62), 12 states have call successors, (62) [2023-11-29 03:37:57,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:03,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:07,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:14,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:19,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:23,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:27,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:31,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:35,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:39,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:43,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:47,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:51,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:55,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:38:59,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:39:04,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:39:04,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:04,942 INFO L93 Difference]: Finished difference Result 458 states and 633 transitions. [2023-11-29 03:39:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 03:39:04,943 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 5.357142857142857) internal successors, (150), 26 states have internal predecessors, (150), 12 states have call successors, (70), 7 states have call predecessors, (70), 7 states have return successors, (62), 10 states have call predecessors, (62), 12 states have call successors, (62) Word has length 166 [2023-11-29 03:39:04,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:04,945 INFO L225 Difference]: With dead ends: 458 [2023-11-29 03:39:04,945 INFO L226 Difference]: Without dead ends: 269 [2023-11-29 03:39:04,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 338 SyntacticMatches, 26 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=362, Invalid=2944, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 03:39:04,948 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 460 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 3242 mSolverCounterSat, 183 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 3441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 3242 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:04,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1567 Invalid, 3441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 3242 Invalid, 16 Unknown, 0 Unchecked, 71.1s Time] [2023-11-29 03:39:04,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-29 03:39:04,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 227. [2023-11-29 03:39:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 149 states have (on average 1.2483221476510067) internal successors, (186), 152 states have internal predecessors, (186), 54 states have call successors, (54), 21 states have call predecessors, (54), 23 states have return successors, (66), 53 states have call predecessors, (66), 52 states have call successors, (66) [2023-11-29 03:39:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 306 transitions. [2023-11-29 03:39:04,969 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 306 transitions. Word has length 166 [2023-11-29 03:39:04,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:04,970 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 306 transitions. [2023-11-29 03:39:04,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 5.357142857142857) internal successors, (150), 26 states have internal predecessors, (150), 12 states have call successors, (70), 7 states have call predecessors, (70), 7 states have return successors, (62), 10 states have call predecessors, (62), 12 states have call successors, (62) [2023-11-29 03:39:04,970 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 306 transitions. [2023-11-29 03:39:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-29 03:39:04,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:04,971 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:04,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:39:05,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:39:05,172 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:05,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash -557038373, now seen corresponding path program 1 times [2023-11-29 03:39:05,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:05,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059285823] [2023-11-29 03:39:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:05,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:39:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:39:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:39:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:39:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:39:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:39:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:39:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:05,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:39:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:39:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:39:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 03:39:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 03:39:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 03:39:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 03:39:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 03:39:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 03:39:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 03:39:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 03:39:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-29 03:39:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-29 03:39:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-11-29 03:39:06,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:06,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059285823] [2023-11-29 03:39:06,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059285823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:39:06,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109176321] [2023-11-29 03:39:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:06,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:06,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:06,311 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:06,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:39:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:07,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 3270 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 03:39:07,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 205 proven. 1 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-29 03:39:07,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:39:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 25 proven. 23 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2023-11-29 03:39:07,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109176321] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:39:07,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:39:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 12] total 28 [2023-11-29 03:39:07,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756687757] [2023-11-29 03:39:07,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:39:07,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:39:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:07,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:39:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:39:07,665 INFO L87 Difference]: Start difference. First operand 227 states and 306 transitions. Second operand has 28 states, 20 states have (on average 5.55) internal successors, (111), 20 states have internal predecessors, (111), 7 states have call successors, (56), 5 states have call predecessors, (56), 8 states have return successors, (51), 8 states have call predecessors, (51), 6 states have call successors, (51) [2023-11-29 03:39:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:14,762 INFO L93 Difference]: Finished difference Result 450 states and 614 transitions. [2023-11-29 03:39:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 03:39:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 20 states have (on average 5.55) internal successors, (111), 20 states have internal predecessors, (111), 7 states have call successors, (56), 5 states have call predecessors, (56), 8 states have return successors, (51), 8 states have call predecessors, (51), 6 states have call successors, (51) Word has length 179 [2023-11-29 03:39:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:14,765 INFO L225 Difference]: With dead ends: 450 [2023-11-29 03:39:14,765 INFO L226 Difference]: Without dead ends: 260 [2023-11-29 03:39:14,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=216, Invalid=2540, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 03:39:14,768 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 217 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 3415 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 3560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 3415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:14,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2861 Invalid, 3560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 3415 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-29 03:39:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-29 03:39:14,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 232. [2023-11-29 03:39:14,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 153 states have (on average 1.2418300653594772) internal successors, (190), 157 states have internal predecessors, (190), 54 states have call successors, (54), 21 states have call predecessors, (54), 24 states have return successors, (68), 53 states have call predecessors, (68), 52 states have call successors, (68) [2023-11-29 03:39:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 312 transitions. [2023-11-29 03:39:14,806 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 312 transitions. Word has length 179 [2023-11-29 03:39:14,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:14,806 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 312 transitions. [2023-11-29 03:39:14,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 20 states have (on average 5.55) internal successors, (111), 20 states have internal predecessors, (111), 7 states have call successors, (56), 5 states have call predecessors, (56), 8 states have return successors, (51), 8 states have call predecessors, (51), 6 states have call successors, (51) [2023-11-29 03:39:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 312 transitions. [2023-11-29 03:39:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-29 03:39:14,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:14,808 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:14,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:39:15,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:39:15,009 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:15,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1447831319, now seen corresponding path program 2 times [2023-11-29 03:39:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:15,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959678852] [2023-11-29 03:39:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:15,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:39:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:39:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:39:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:39:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:39:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:39:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:39:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:39:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:39:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:39:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 03:39:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 03:39:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 03:39:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 03:39:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 03:39:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-29 03:39:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-29 03:39:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-29 03:39:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-29 03:39:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-29 03:39:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-11-29 03:39:16,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:16,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959678852] [2023-11-29 03:39:16,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959678852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:39:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509957386] [2023-11-29 03:39:16,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:39:16,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:16,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:16,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:16,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:39:17,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:39:17,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:39:17,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 3417 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:39:17,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-11-29 03:39:17,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:39:17,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509957386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:17,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:39:17,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2023-11-29 03:39:17,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450023388] [2023-11-29 03:39:17,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:17,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:39:17,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:17,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:39:17,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:39:17,417 INFO L87 Difference]: Start difference. First operand 232 states and 312 transitions. Second operand has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-29 03:39:18,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:18,110 INFO L93 Difference]: Finished difference Result 372 states and 511 transitions. [2023-11-29 03:39:18,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:39:18,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 182 [2023-11-29 03:39:18,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:18,113 INFO L225 Difference]: With dead ends: 372 [2023-11-29 03:39:18,113 INFO L226 Difference]: Without dead ends: 232 [2023-11-29 03:39:18,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:39:18,114 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 11 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:18,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1640 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-29 03:39:18,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2023-11-29 03:39:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 153 states have (on average 1.2418300653594772) internal successors, (190), 157 states have internal predecessors, (190), 54 states have call successors, (54), 21 states have call predecessors, (54), 24 states have return successors, (67), 53 states have call predecessors, (67), 52 states have call successors, (67) [2023-11-29 03:39:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 311 transitions. [2023-11-29 03:39:18,159 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 311 transitions. Word has length 182 [2023-11-29 03:39:18,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:18,159 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 311 transitions. [2023-11-29 03:39:18,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-29 03:39:18,159 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 311 transitions. [2023-11-29 03:39:18,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-29 03:39:18,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:18,161 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:18,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 03:39:18,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:39:18,361 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:18,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1761630626, now seen corresponding path program 3 times [2023-11-29 03:39:18,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:18,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988557896] [2023-11-29 03:39:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:18,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:39:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:39:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:39:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:39:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:39:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:39:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:39:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:39:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:39:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:39:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 03:39:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 03:39:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 03:39:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 03:39:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 03:39:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-29 03:39:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-29 03:39:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-29 03:39:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-29 03:39:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-29 03:39:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2023-11-29 03:39:19,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:19,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988557896] [2023-11-29 03:39:19,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988557896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:39:19,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880617056] [2023-11-29 03:39:19,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:39:19,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:19,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:19,571 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:19,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:39:20,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 03:39:20,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:39:20,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 2582 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:39:20,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-29 03:39:20,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:39:20,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880617056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:39:20,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:39:20,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2023-11-29 03:39:20,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529446649] [2023-11-29 03:39:20,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:39:20,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:39:20,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:20,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:39:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:39:20,878 INFO L87 Difference]: Start difference. First operand 232 states and 311 transitions. Second operand has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-29 03:39:21,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:39:21,590 INFO L93 Difference]: Finished difference Result 397 states and 536 transitions. [2023-11-29 03:39:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:39:21,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 184 [2023-11-29 03:39:21,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:39:21,593 INFO L225 Difference]: With dead ends: 397 [2023-11-29 03:39:21,593 INFO L226 Difference]: Without dead ends: 228 [2023-11-29 03:39:21,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:39:21,594 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 11 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:39:21,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1641 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:39:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-29 03:39:21,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2023-11-29 03:39:21,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 150 states have (on average 1.24) internal successors, (186), 153 states have internal predecessors, (186), 54 states have call successors, (54), 21 states have call predecessors, (54), 23 states have return successors, (66), 53 states have call predecessors, (66), 52 states have call successors, (66) [2023-11-29 03:39:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 306 transitions. [2023-11-29 03:39:21,616 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 306 transitions. Word has length 184 [2023-11-29 03:39:21,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:39:21,616 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 306 transitions. [2023-11-29 03:39:21,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-29 03:39:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 306 transitions. [2023-11-29 03:39:21,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-29 03:39:21,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:39:21,618 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:39:21,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:39:21,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:39:21,818 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:39:21,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:39:21,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1009105015, now seen corresponding path program 2 times [2023-11-29 03:39:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:39:21,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762500467] [2023-11-29 03:39:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:39:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:39:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:39:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:39:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:39:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:39:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:39:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:39:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:39:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:39:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:39:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:22,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:39:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 03:39:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:39:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 03:39:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 03:39:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 03:39:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 03:39:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 03:39:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 03:39:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-29 03:39:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-29 03:39:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-29 03:39:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:39:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-29 03:39:23,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:39:23,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762500467] [2023-11-29 03:39:23,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762500467] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:39:23,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213795214] [2023-11-29 03:39:23,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:39:23,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:39:23,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:39:23,144 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:39:23,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:39:24,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:39:24,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:39:24,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 3437 conjuncts, 107 conjunts are in the unsatisfiable core [2023-11-29 03:39:24,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:39:24,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 03:39:24,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 03:39:24,804 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 03:39:24,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 03:39:24,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 03:39:24,921 WARN L876 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (<= (+ |bounded_malloc_#res.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| (select |c_#valid| |bounded_malloc_#res.base|))))) is different from true [2023-11-29 03:39:24,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:39:24,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 03:39:25,899 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-29 03:39:25,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-29 03:39:25,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:39:25,953 INFO L349 Elim1Store]: treesize reduction 92, result has 22.7 percent of original size [2023-11-29 03:39:25,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 34 treesize of output 39 [2023-11-29 03:39:26,191 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-29 03:39:26,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-29 03:39:26,384 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 03:39:26,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 03:39:30,581 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-29 03:39:30,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-29 03:39:32,002 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-29 03:39:32,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-29 03:39:32,466 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-29 03:39:32,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-11-29 03:39:32,522 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 19 treesize of output 14 [2023-11-29 03:39:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 85 proven. 57 refuted. 0 times theorem prover too weak. 230 trivial. 1 not checked. [2023-11-29 03:39:36,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:39:41,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213795214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:39:41,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:39:41,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27] total 34 [2023-11-29 03:39:41,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647047150] [2023-11-29 03:39:41,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:39:41,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 03:39:41,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:39:41,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 03:39:41,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1491, Unknown=12, NotChecked=78, Total=1722 [2023-11-29 03:39:41,499 INFO L87 Difference]: Start difference. First operand 228 states and 306 transitions. Second operand has 34 states, 32 states have (on average 4.03125) internal successors, (129), 29 states have internal predecessors, (129), 11 states have call successors, (53), 11 states have call predecessors, (53), 9 states have return successors, (50), 11 states have call predecessors, (50), 11 states have call successors, (50) [2023-11-29 03:39:46,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:39:50,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:39:55,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:00,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:06,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:10,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:22,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:26,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:38,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:42,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:46,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:50,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:55,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:40:59,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:41:03,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:41:24,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:41:28,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:41:52,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:41:56,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:00,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:04,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:08,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:13,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:17,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:21,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:25,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:29,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:33,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:37,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:41,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:45,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:49,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:53,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:42:57,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:43:02,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:43:06,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:43:10,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:43:14,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:43:18,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:43:22,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:43:26,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:43:30,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:43:34,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:43:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:36,608 INFO L93 Difference]: Finished difference Result 674 states and 886 transitions. [2023-11-29 03:43:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-29 03:43:36,609 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 4.03125) internal successors, (129), 29 states have internal predecessors, (129), 11 states have call successors, (53), 11 states have call predecessors, (53), 9 states have return successors, (50), 11 states have call predecessors, (50), 11 states have call successors, (50) Word has length 186 [2023-11-29 03:43:36,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:36,612 INFO L225 Difference]: With dead ends: 674 [2023-11-29 03:43:36,612 INFO L226 Difference]: Without dead ends: 479 [2023-11-29 03:43:36,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 205 SyntacticMatches, 29 SemanticMatches, 105 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=1205, Invalid=9910, Unknown=19, NotChecked=208, Total=11342 [2023-11-29 03:43:36,618 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1192 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 484 mSolverCounterUnsat, 42 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 42 IncrementalHoareTripleChecker+Unknown, 549 IncrementalHoareTripleChecker+Unchecked, 199.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:36,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1556 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [484 Valid, 4778 Invalid, 42 Unknown, 549 Unchecked, 199.7s Time] [2023-11-29 03:43:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-29 03:43:36,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 403. [2023-11-29 03:43:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 275 states have (on average 1.229090909090909) internal successors, (338), 282 states have internal predecessors, (338), 82 states have call successors, (82), 39 states have call predecessors, (82), 45 states have return successors, (94), 81 states have call predecessors, (94), 79 states have call successors, (94) [2023-11-29 03:43:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 514 transitions. [2023-11-29 03:43:36,668 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 514 transitions. Word has length 186 [2023-11-29 03:43:36,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:36,668 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 514 transitions. [2023-11-29 03:43:36,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 4.03125) internal successors, (129), 29 states have internal predecessors, (129), 11 states have call successors, (53), 11 states have call predecessors, (53), 9 states have return successors, (50), 11 states have call predecessors, (50), 11 states have call successors, (50) [2023-11-29 03:43:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 514 transitions. [2023-11-29 03:43:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 03:43:36,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:36,670 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:36,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 03:43:36,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:36,871 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:36,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1969499899, now seen corresponding path program 1 times [2023-11-29 03:43:36,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:36,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291255968] [2023-11-29 03:43:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:36,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:43:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:43:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:43:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:43:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:43:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:43:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:43:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:43:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:43:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:37,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:43:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 03:43:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 03:43:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 03:43:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 03:43:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 03:43:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 03:43:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 03:43:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 03:43:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-29 03:43:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-29 03:43:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2023-11-29 03:43:38,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:38,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291255968] [2023-11-29 03:43:38,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291255968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:43:38,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027866401] [2023-11-29 03:43:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:38,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:38,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:38,591 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:38,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:43:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:39,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 3596 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:43:39,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-11-29 03:43:39,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:43:39,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027866401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:39,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:43:39,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-11-29 03:43:39,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346471722] [2023-11-29 03:43:39,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:39,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:43:39,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:39,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:43:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:43:39,834 INFO L87 Difference]: Start difference. First operand 403 states and 514 transitions. Second operand has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-29 03:43:40,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:40,964 INFO L93 Difference]: Finished difference Result 746 states and 959 transitions. [2023-11-29 03:43:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:43:40,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 193 [2023-11-29 03:43:40,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:40,969 INFO L225 Difference]: With dead ends: 746 [2023-11-29 03:43:40,969 INFO L226 Difference]: Without dead ends: 403 [2023-11-29 03:43:40,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:43:40,970 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:40,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 652 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:43:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-11-29 03:43:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2023-11-29 03:43:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 275 states have (on average 1.2181818181818183) internal successors, (335), 282 states have internal predecessors, (335), 82 states have call successors, (82), 39 states have call predecessors, (82), 45 states have return successors, (94), 81 states have call predecessors, (94), 79 states have call successors, (94) [2023-11-29 03:43:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 511 transitions. [2023-11-29 03:43:41,019 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 511 transitions. Word has length 193 [2023-11-29 03:43:41,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:41,019 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 511 transitions. [2023-11-29 03:43:41,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-29 03:43:41,019 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 511 transitions. [2023-11-29 03:43:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 03:43:41,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:41,021 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:43:41,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 03:43:41,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:41,222 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:41,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:41,222 INFO L85 PathProgramCache]: Analyzing trace with hash -569051665, now seen corresponding path program 1 times [2023-11-29 03:43:41,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:41,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348872803] [2023-11-29 03:43:41,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:41,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:43:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:43:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:43:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:43:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:43:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:43:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:43:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:43:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:43:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:43:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 03:43:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:43:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 03:43:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 03:43:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 03:43:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 03:43:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 03:43:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-29 03:43:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 03:43:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:42,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-29 03:43:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-29 03:43:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2023-11-29 03:43:43,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348872803] [2023-11-29 03:43:43,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348872803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:43:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774501268] [2023-11-29 03:43:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:43,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:43,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:43,010 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:43,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:43:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:44,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 3604 conjuncts, 90 conjunts are in the unsatisfiable core [2023-11-29 03:43:44,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 212 proven. 31 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-29 03:43:50,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-11-29 03:43:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774501268] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:52,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:43:52,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 22, 13] total 41 [2023-11-29 03:43:52,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474529729] [2023-11-29 03:43:52,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:52,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 03:43:52,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:52,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 03:43:52,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1524, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 03:43:52,830 INFO L87 Difference]: Start difference. First operand 403 states and 511 transitions. Second operand has 41 states, 35 states have (on average 4.485714285714286) internal successors, (157), 33 states have internal predecessors, (157), 16 states have call successors, (71), 8 states have call predecessors, (71), 9 states have return successors, (62), 15 states have call predecessors, (62), 15 states have call successors, (62) [2023-11-29 03:43:57,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:44:06,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:44:10,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:44:28,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:44:32,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:44:37,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:44:41,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:44:45,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:44:49,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:44:53,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:44:58,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:02,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:06,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:10,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:14,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:19,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:23,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:27,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:31,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:35,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:39,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:44,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:45:46,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:46,663 INFO L93 Difference]: Finished difference Result 825 states and 1061 transitions. [2023-11-29 03:45:46,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 03:45:46,664 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 35 states have (on average 4.485714285714286) internal successors, (157), 33 states have internal predecessors, (157), 16 states have call successors, (71), 8 states have call predecessors, (71), 9 states have return successors, (62), 15 states have call predecessors, (62), 15 states have call successors, (62) Word has length 195 [2023-11-29 03:45:46,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:46,667 INFO L225 Difference]: With dead ends: 825 [2023-11-29 03:45:46,667 INFO L226 Difference]: Without dead ends: 466 [2023-11-29 03:45:46,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 391 SyntacticMatches, 19 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1349 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=429, Invalid=5577, Unknown=0, NotChecked=0, Total=6006 [2023-11-29 03:45:46,672 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 375 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 4368 mSolverCounterSat, 142 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 4368 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:46,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 2287 Invalid, 4532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [142 Valid, 4368 Invalid, 22 Unknown, 0 Unchecked, 109.2s Time] [2023-11-29 03:45:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-11-29 03:45:46,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 408. [2023-11-29 03:45:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 279 states have (on average 1.2114695340501793) internal successors, (338), 286 states have internal predecessors, (338), 82 states have call successors, (82), 40 states have call predecessors, (82), 46 states have return successors, (94), 81 states have call predecessors, (94), 79 states have call successors, (94) [2023-11-29 03:45:46,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 514 transitions. [2023-11-29 03:45:46,724 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 514 transitions. Word has length 195 [2023-11-29 03:45:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:46,725 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 514 transitions. [2023-11-29 03:45:46,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 35 states have (on average 4.485714285714286) internal successors, (157), 33 states have internal predecessors, (157), 16 states have call successors, (71), 8 states have call predecessors, (71), 9 states have return successors, (62), 15 states have call predecessors, (62), 15 states have call successors, (62) [2023-11-29 03:45:46,725 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 514 transitions. [2023-11-29 03:45:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-29 03:45:46,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:46,726 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:45:46,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 03:45:46,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 03:45:46,927 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:45:46,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash 55811600, now seen corresponding path program 1 times [2023-11-29 03:45:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:46,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064916168] [2023-11-29 03:45:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:46,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:45:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:45:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:45:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:45:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:45:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:45:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:45:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:45:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:45:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:45:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:45:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:45:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:45:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:45:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 03:45:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:45:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:45:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 03:45:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 03:45:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 03:45:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 03:45:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-29 03:45:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-29 03:45:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-29 03:45:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-29 03:45:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-29 03:45:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2023-11-29 03:45:48,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:48,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064916168] [2023-11-29 03:45:48,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064916168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:45:48,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17734361] [2023-11-29 03:45:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:48,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:48,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:48,965 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:48,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 03:45:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:50,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 3744 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-29 03:45:50,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:45:51,357 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 25 treesize of output 13 [2023-11-29 03:45:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 124 proven. 37 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-29 03:45:58,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:46:00,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17734361] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:46:00,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:46:00,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 25] total 34 [2023-11-29 03:46:00,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785262584] [2023-11-29 03:46:00,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:46:00,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 03:46:00,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:00,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 03:46:00,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1770, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 03:46:00,877 INFO L87 Difference]: Start difference. First operand 408 states and 514 transitions. Second operand has 34 states, 28 states have (on average 4.785714285714286) internal successors, (134), 28 states have internal predecessors, (134), 12 states have call successors, (52), 6 states have call predecessors, (52), 9 states have return successors, (49), 13 states have call predecessors, (49), 11 states have call successors, (49) [2023-11-29 03:46:07,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:46:16,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:46:35,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:46:39,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:46:44,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:46:48,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:46:52,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:46:57,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:01,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:05,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:09,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:13,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:18,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:22,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:26,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:30,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:34,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:39,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:43,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:47,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:51,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:47:53,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:47:53,657 INFO L93 Difference]: Finished difference Result 669 states and 853 transitions. [2023-11-29 03:47:53,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 03:47:53,658 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 28 states have (on average 4.785714285714286) internal successors, (134), 28 states have internal predecessors, (134), 12 states have call successors, (52), 6 states have call predecessors, (52), 9 states have return successors, (49), 13 states have call predecessors, (49), 11 states have call successors, (49) Word has length 196 [2023-11-29 03:47:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:47:53,660 INFO L225 Difference]: With dead ends: 669 [2023-11-29 03:47:53,660 INFO L226 Difference]: Without dead ends: 303 [2023-11-29 03:47:53,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 355 SyntacticMatches, 25 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=450, Invalid=6522, Unknown=0, NotChecked=0, Total=6972 [2023-11-29 03:47:53,664 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 366 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 4160 mSolverCounterSat, 141 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 4322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 4160 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:47:53,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 2400 Invalid, 4322 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [141 Valid, 4160 Invalid, 21 Unknown, 0 Unchecked, 107.8s Time] [2023-11-29 03:47:53,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-29 03:47:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 266. [2023-11-29 03:47:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 184 states have (on average 1.190217391304348) internal successors, (219), 186 states have internal predecessors, (219), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2023-11-29 03:47:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 331 transitions. [2023-11-29 03:47:53,698 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 331 transitions. Word has length 196 [2023-11-29 03:47:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:47:53,698 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 331 transitions. [2023-11-29 03:47:53,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 28 states have (on average 4.785714285714286) internal successors, (134), 28 states have internal predecessors, (134), 12 states have call successors, (52), 6 states have call predecessors, (52), 9 states have return successors, (49), 13 states have call predecessors, (49), 11 states have call successors, (49) [2023-11-29 03:47:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 331 transitions. [2023-11-29 03:47:53,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 03:47:53,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:47:53,699 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:47:53,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 03:47:53,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:53,900 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:47:53,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:47:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1735046598, now seen corresponding path program 1 times [2023-11-29 03:47:53,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:47:53,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222346144] [2023-11-29 03:47:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:53,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:47:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:47:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:47:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:47:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:47:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:47:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:47:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:47:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:47:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:47:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:47:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:47:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:47:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:47:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:47:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 03:47:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:47:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:47:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 03:47:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 03:47:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 03:47:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 03:47:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 03:47:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 03:47:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-29 03:47:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-29 03:47:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-11-29 03:47:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-29 03:47:56,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:47:56,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222346144] [2023-11-29 03:47:56,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222346144] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:47:56,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004964351] [2023-11-29 03:47:56,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:47:56,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:47:56,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:47:56,348 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:47:56,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 03:47:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:47:58,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 3965 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-29 03:47:58,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:47:59,086 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 9 treesize of output 5 [2023-11-29 03:47:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2023-11-29 03:47:59,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-11-29 03:48:00,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004964351] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:48:00,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:48:00,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 12] total 27 [2023-11-29 03:48:00,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411557465] [2023-11-29 03:48:00,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:48:00,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:48:00,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:48:00,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:48:00,578 INFO L87 Difference]: Start difference. First operand 266 states and 331 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 03:48:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:03,738 INFO L93 Difference]: Finished difference Result 415 states and 526 transitions. [2023-11-29 03:48:03,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:48:03,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 203 [2023-11-29 03:48:03,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:03,740 INFO L225 Difference]: With dead ends: 415 [2023-11-29 03:48:03,741 INFO L226 Difference]: Without dead ends: 269 [2023-11-29 03:48:03,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:48:03,743 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 86 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:03,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1310 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 03:48:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-29 03:48:03,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2023-11-29 03:48:03,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 186 states have (on average 1.1881720430107527) internal successors, (221), 188 states have internal predecessors, (221), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2023-11-29 03:48:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 333 transitions. [2023-11-29 03:48:03,779 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 333 transitions. Word has length 203 [2023-11-29 03:48:03,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:03,779 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 333 transitions. [2023-11-29 03:48:03,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 03:48:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 333 transitions. [2023-11-29 03:48:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-29 03:48:03,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:03,781 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:03,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 03:48:03,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:03,982 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:48:03,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash -937716341, now seen corresponding path program 1 times [2023-11-29 03:48:03,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:03,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634106651] [2023-11-29 03:48:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:03,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:48:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:48:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:48:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:48:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:48:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:48:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:48:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:48:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:48:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:48:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 03:48:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 03:48:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 03:48:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 03:48:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 03:48:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 03:48:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 03:48:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-29 03:48:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-29 03:48:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-11-29 03:48:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-29 03:48:06,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634106651] [2023-11-29 03:48:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634106651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:48:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250611614] [2023-11-29 03:48:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:06,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:06,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:06,149 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:06,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 03:48:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:08,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 3968 conjuncts, 95 conjunts are in the unsatisfiable core [2023-11-29 03:48:08,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:09,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:48:09,733 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 9 treesize of output 5 [2023-11-29 03:48:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2023-11-29 03:48:10,055 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:48:10,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250611614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:48:10,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:48:10,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2023-11-29 03:48:10,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311797567] [2023-11-29 03:48:10,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:48:10,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:48:10,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:10,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:48:10,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:48:10,057 INFO L87 Difference]: Start difference. First operand 268 states and 333 transitions. Second operand has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 8 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-29 03:48:13,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:13,513 INFO L93 Difference]: Finished difference Result 418 states and 529 transitions. [2023-11-29 03:48:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:48:13,514 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 8 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 204 [2023-11-29 03:48:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:13,516 INFO L225 Difference]: With dead ends: 418 [2023-11-29 03:48:13,516 INFO L226 Difference]: Without dead ends: 272 [2023-11-29 03:48:13,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:48:13,517 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 157 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:13,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1657 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 03:48:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-29 03:48:13,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2023-11-29 03:48:13,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 189 states have (on average 1.1851851851851851) internal successors, (224), 191 states have internal predecessors, (224), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2023-11-29 03:48:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 336 transitions. [2023-11-29 03:48:13,570 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 336 transitions. Word has length 204 [2023-11-29 03:48:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:13,570 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 336 transitions. [2023-11-29 03:48:13,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 8 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-29 03:48:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 336 transitions. [2023-11-29 03:48:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-29 03:48:13,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:13,572 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:13,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-29 03:48:13,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:13,773 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:48:13,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash -515014515, now seen corresponding path program 1 times [2023-11-29 03:48:13,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:13,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828868201] [2023-11-29 03:48:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:13,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:48:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:48:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:48:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:48:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:48:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:48:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:48:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:48:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:48:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:48:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 03:48:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 03:48:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 03:48:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 03:48:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 03:48:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 03:48:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 03:48:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-29 03:48:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-29 03:48:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-11-29 03:48:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-29 03:48:15,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:15,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828868201] [2023-11-29 03:48:15,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828868201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:48:15,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068622475] [2023-11-29 03:48:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:15,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:48:15,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:48:15,996 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:48:15,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 03:48:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:26,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 3968 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:48:26,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 182 proven. 21 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-29 03:48:26,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:48:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-29 03:48:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068622475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:48:27,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:48:27,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2023-11-29 03:48:27,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445324239] [2023-11-29 03:48:27,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:48:27,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:48:27,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:27,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:48:27,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:48:27,121 INFO L87 Difference]: Start difference. First operand 271 states and 336 transitions. Second operand has 27 states, 27 states have (on average 4.666666666666667) internal successors, (126), 25 states have internal predecessors, (126), 2 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-29 03:48:39,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:39,519 INFO L93 Difference]: Finished difference Result 525 states and 671 transitions. [2023-11-29 03:48:39,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:48:39,520 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.666666666666667) internal successors, (126), 25 states have internal predecessors, (126), 2 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 204 [2023-11-29 03:48:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:39,523 INFO L225 Difference]: With dead ends: 525 [2023-11-29 03:48:39,523 INFO L226 Difference]: Without dead ends: 313 [2023-11-29 03:48:39,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=395, Invalid=1585, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 03:48:39,525 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 190 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:39,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1801 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-11-29 03:48:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-29 03:48:39,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 273. [2023-11-29 03:48:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 191 states have (on average 1.1832460732984293) internal successors, (226), 193 states have internal predecessors, (226), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2023-11-29 03:48:39,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 338 transitions. [2023-11-29 03:48:39,582 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 338 transitions. Word has length 204 [2023-11-29 03:48:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:39,582 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 338 transitions. [2023-11-29 03:48:39,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.666666666666667) internal successors, (126), 25 states have internal predecessors, (126), 2 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-11-29 03:48:39,583 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 338 transitions. [2023-11-29 03:48:39,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-29 03:48:39,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:39,584 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:39,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 03:48:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 03:48:39,785 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:48:39,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:39,785 INFO L85 PathProgramCache]: Analyzing trace with hash 474806317, now seen corresponding path program 2 times [2023-11-29 03:48:39,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:39,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835219023] [2023-11-29 03:48:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:39,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:48:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:48:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:48:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:48:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:48:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:48:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:48:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:48:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:48:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:48:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 03:48:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 03:48:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 03:48:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 03:48:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 03:48:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 03:48:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 03:48:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-29 03:48:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-29 03:48:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-29 03:48:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2023-11-29 03:48:44,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:44,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835219023] [2023-11-29 03:48:44,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835219023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:48:44,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:48:44,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:48:44,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346743227] [2023-11-29 03:48:44,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:48:44,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:48:44,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:48:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:48:44,432 INFO L87 Difference]: Start difference. First operand 273 states and 338 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 03:48:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:47,101 INFO L93 Difference]: Finished difference Result 429 states and 544 transitions. [2023-11-29 03:48:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:48:47,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 206 [2023-11-29 03:48:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:47,104 INFO L225 Difference]: With dead ends: 429 [2023-11-29 03:48:47,104 INFO L226 Difference]: Without dead ends: 280 [2023-11-29 03:48:47,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:48:47,105 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 277 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:47,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 465 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 03:48:47,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-29 03:48:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 270. [2023-11-29 03:48:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 188 states have (on average 1.1808510638297873) internal successors, (222), 190 states have internal predecessors, (222), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2023-11-29 03:48:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 334 transitions. [2023-11-29 03:48:47,161 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 334 transitions. Word has length 206 [2023-11-29 03:48:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:47,161 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 334 transitions. [2023-11-29 03:48:47,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 03:48:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 334 transitions. [2023-11-29 03:48:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-29 03:48:47,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:47,162 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:47,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 03:48:47,162 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:48:47,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:47,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2027845689, now seen corresponding path program 1 times [2023-11-29 03:48:47,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:47,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013155870] [2023-11-29 03:48:47,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:48:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:48:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:48:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:48:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:48:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:48:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:48:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:48:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:48:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:48:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 03:48:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 03:48:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 03:48:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 03:48:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 03:48:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 03:48:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 03:48:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-29 03:48:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-29 03:48:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-29 03:48:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2023-11-29 03:48:49,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:49,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013155870] [2023-11-29 03:48:49,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013155870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:48:49,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:48:49,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:48:49,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526217819] [2023-11-29 03:48:49,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:48:49,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:48:49,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:49,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:48:49,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:48:49,746 INFO L87 Difference]: Start difference. First operand 270 states and 334 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 03:48:53,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:53,278 INFO L93 Difference]: Finished difference Result 426 states and 540 transitions. [2023-11-29 03:48:53,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:48:53,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 206 [2023-11-29 03:48:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:53,281 INFO L225 Difference]: With dead ends: 426 [2023-11-29 03:48:53,281 INFO L226 Difference]: Without dead ends: 280 [2023-11-29 03:48:53,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:48:53,282 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 244 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:53,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 679 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 03:48:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-29 03:48:53,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 268. [2023-11-29 03:48:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 186 states have (on average 1.1774193548387097) internal successors, (219), 188 states have internal predecessors, (219), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2023-11-29 03:48:53,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 331 transitions. [2023-11-29 03:48:53,335 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 331 transitions. Word has length 206 [2023-11-29 03:48:53,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:53,336 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 331 transitions. [2023-11-29 03:48:53,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 03:48:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 331 transitions. [2023-11-29 03:48:53,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 03:48:53,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:53,337 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:53,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 03:48:53,337 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:48:53,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:53,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1290540064, now seen corresponding path program 1 times [2023-11-29 03:48:53,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:53,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024666674] [2023-11-29 03:48:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:53,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:48:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:48:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:48:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:48:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:48:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:48:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:48:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:48:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:48:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:54,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:48:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 03:48:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:48:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 03:48:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 03:48:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 03:48:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 03:48:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 03:48:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 03:48:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-29 03:48:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-29 03:48:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-29 03:48:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:48:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2023-11-29 03:48:55,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:48:55,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024666674] [2023-11-29 03:48:55,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024666674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:48:55,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:48:55,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:48:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20260501] [2023-11-29 03:48:55,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:48:55,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:48:55,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:48:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:48:55,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:48:55,079 INFO L87 Difference]: Start difference. First operand 268 states and 331 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 03:48:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:48:58,942 INFO L93 Difference]: Finished difference Result 428 states and 542 transitions. [2023-11-29 03:48:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:48:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 207 [2023-11-29 03:48:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:48:58,945 INFO L225 Difference]: With dead ends: 428 [2023-11-29 03:48:58,945 INFO L226 Difference]: Without dead ends: 282 [2023-11-29 03:48:58,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:48:58,947 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 265 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:48:58,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 769 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 03:48:58,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-29 03:48:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 271. [2023-11-29 03:48:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 189 states have (on average 1.1746031746031746) internal successors, (222), 191 states have internal predecessors, (222), 54 states have call successors, (54), 26 states have call predecessors, (54), 27 states have return successors, (58), 53 states have call predecessors, (58), 52 states have call successors, (58) [2023-11-29 03:48:59,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 334 transitions. [2023-11-29 03:48:59,003 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 334 transitions. Word has length 207 [2023-11-29 03:48:59,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:48:59,004 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 334 transitions. [2023-11-29 03:48:59,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 03:48:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 334 transitions. [2023-11-29 03:48:59,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 03:48:59,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:48:59,006 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:48:59,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 03:48:59,006 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:48:59,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:48:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash -867838238, now seen corresponding path program 1 times [2023-11-29 03:48:59,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:48:59,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796856804] [2023-11-29 03:48:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:48:59,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:48:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:49:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:49:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 03:49:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:49:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:04,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:49:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:04,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:49:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:49:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 03:49:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:49:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 03:49:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 03:49:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 03:49:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 03:49:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 03:49:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 03:49:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:49:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 03:49:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 03:49:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 03:49:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 03:49:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 03:49:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 03:49:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 03:49:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-29 03:49:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-29 03:49:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-29 03:49:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-11-29 03:49:05,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:49:05,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796856804] [2023-11-29 03:49:05,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796856804] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:49:05,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84634584] [2023-11-29 03:49:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:49:05,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:49:05,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:49:05,861 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:49:05,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64f289f-ac05-4095-8d86-b0d907b5c7ee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 03:49:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:49:23,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 4245 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-29 03:49:23,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:49:24,745 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 37 treesize of output 21 [2023-11-29 03:49:32,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 03:49:32,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 40 [2023-11-29 03:49:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 100 proven. 37 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-11-29 03:49:33,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:49:35,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84634584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:49:35,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:49:35,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 41 [2023-11-29 03:49:35,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972024622] [2023-11-29 03:49:35,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:49:35,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 03:49:35,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:49:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 03:49:35,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2489, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 03:49:35,640 INFO L87 Difference]: Start difference. First operand 271 states and 334 transitions. Second operand has 41 states, 33 states have (on average 4.393939393939394) internal successors, (145), 33 states have internal predecessors, (145), 20 states have call successors, (52), 7 states have call predecessors, (52), 9 states have return successors, (50), 21 states have call predecessors, (50), 19 states have call successors, (50) [2023-11-29 03:49:43,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:49:52,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:50:08,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:50:12,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]