./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/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_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/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_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/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 ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:53:17,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:53:17,663 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 01:53:17,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:53:17,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:53:17,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:53:17,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:53:17,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:53:17,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:53:17,701 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:53:17,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:53:17,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:53:17,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:53:17,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:53:17,704 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:53:17,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:53:17,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:53:17,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:53:17,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:53:17,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:53:17,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:53:17,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:53:17,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:53:17,710 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:53:17,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:53:17,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:53:17,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:53:17,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:53:17,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:53:17,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:53:17,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:53:17,715 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:53:17,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:53:17,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:53:17,716 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:53:17,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:53:17,716 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:53:17,716 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:53:17,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:53:17,717 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_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 [2023-11-29 01:53:17,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:53:18,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:53:18,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:53:18,007 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:53:18,007 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:53:18,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2023-11-29 01:53:21,173 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:53:21,685 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:53:21,686 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2023-11-29 01:53:21,727 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/data/3fef35708/13d40eac9d394f2391f8d72c86b7c8e8/FLAGdfe11a8a1 [2023-11-29 01:53:21,745 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/data/3fef35708/13d40eac9d394f2391f8d72c86b7c8e8 [2023-11-29 01:53:21,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:53:21,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:53:21,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:53:21,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:53:21,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:53:21,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:53:21" (1/1) ... [2023-11-29 01:53:21,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d1b457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:21, skipping insertion in model container [2023-11-29 01:53:21,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:53:21" (1/1) ... [2023-11-29 01:53:21,907 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:53:22,235 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_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2023-11-29 01:53:22,246 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_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2023-11-29 01:53:23,724 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:23,725 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:23,726 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:23,727 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:23,728 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:23,762 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:23,763 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:23,765 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:23,766 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:24,423 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 01:53:24,425 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 01:53:24,426 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 01:53:24,428 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 01:53:24,430 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 01:53:24,431 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 01:53:24,432 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 01:53:24,433 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 01:53:24,434 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 01:53:24,435 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 01:53:24,781 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:24,782 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,171 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,172 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,198 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,199 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,206 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,206 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,223 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,224 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,225 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,225 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,226 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,226 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,227 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:53:25,319 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:53:25,335 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_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2023-11-29 01:53:25,336 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_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2023-11-29 01:53:25,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,379 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,379 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,380 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,387 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,387 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,388 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,389 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,423 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 01:53:25,424 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 01:53:25,424 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 01:53:25,425 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 01:53:25,426 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 01:53:25,426 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 01:53:25,427 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 01:53:25,427 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 01:53:25,428 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 01:53:25,428 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 01:53:25,530 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8288] [2023-11-29 01:53:25,532 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,533 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,549 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8774-8785] [2023-11-29 01:53:25,628 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,629 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,636 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,637 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,641 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,652 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,652 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,653 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:53:25,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:53:25,909 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,909 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,910 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,910 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,910 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,910 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,910 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,910 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,910 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,910 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,910 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,911 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,911 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,911 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,911 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,911 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,911 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,911 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,911 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,911 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:53:25,919 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:53:25,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25 WrapperNode [2023-11-29 01:53:25,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:53:25,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:53:25,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:53:25,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:53:25,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,125 INFO L138 Inliner]: procedures = 774, calls = 3579, calls flagged for inlining = 77, calls inlined = 6, statements flattened = 793 [2023-11-29 01:53:26,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:53:26,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:53:26,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:53:26,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:53:26,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,153 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,244 INFO L175 MemorySlicer]: Split 613 memory accesses to 10 slices as follows [2, 7, 10, 84, 5, 256, 236, 7, 3, 3]. 42 percent of accesses are in the largest equivalence class. The 504 initializations are split as follows [2, 1, 0, 0, 5, 256, 236, 1, 3, 0]. The 10 writes are split as follows [0, 4, 1, 0, 0, 0, 0, 4, 0, 1]. [2023-11-29 01:53:26,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:53:26,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:53:26,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:53:26,376 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:53:26,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (1/1) ... [2023-11-29 01:53:26,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:53:26,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:53:26,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:53:26,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:53:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-29 01:53:26,461 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-29 01:53:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:53:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:53:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:53:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:53:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:53:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 01:53:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 01:53:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 01:53:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-29 01:53:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-29 01:53:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:53:26,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:53:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:53:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:53:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:53:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:53:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:53:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:53:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 01:53:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 01:53:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 01:53:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-29 01:53:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-29 01:53:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-29 01:53:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:53:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:53:26,464 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 01:53:26,464 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 01:53:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:53:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:53:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:53:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:53:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:53:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 01:53:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 01:53:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 01:53:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-29 01:53:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-29 01:53:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-29 01:53:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure hashlittle2 [2023-11-29 01:53:26,466 INFO L138 BoogieDeclarations]: Found implementation of procedure hashlittle2 [2023-11-29 01:53:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:53:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:53:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:53:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:53:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:53:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 01:53:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 01:53:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 01:53:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-29 01:53:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-29 01:53:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-29 01:53:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-29 01:53:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:53:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:53:26,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:53:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 01:53:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 01:53:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 01:53:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 01:53:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 01:53:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 01:53:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-29 01:53:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-29 01:53:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-29 01:53:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-29 01:53:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:53:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:53:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:53:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:53:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:53:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:53:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 01:53:26,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 01:53:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 01:53:26,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 01:53:26,829 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:53:26,831 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:53:29,152 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !true; [2023-11-29 01:53:29,156 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:53:29,405 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:53:29,405 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 01:53:29,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:53:29 BoogieIcfgContainer [2023-11-29 01:53:29,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:53:29,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:53:29,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:53:29,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:53:29,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:53:21" (1/3) ... [2023-11-29 01:53:29,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558e7d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:53:29, skipping insertion in model container [2023-11-29 01:53:29,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:53:25" (2/3) ... [2023-11-29 01:53:29,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558e7d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:53:29, skipping insertion in model container [2023-11-29 01:53:29,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:53:29" (3/3) ... [2023-11-29 01:53:29,417 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_byte_cursor_ptr_harness.i [2023-11-29 01:53:29,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:53:29,442 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:53:29,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:53:29,520 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;@478cca6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:53:29,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:53:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 263 states have (on average 1.703422053231939) internal successors, (448), 263 states have internal predecessors, (448), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 01:53:29,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 01:53:29,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:29,549 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:29,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:29,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash 56840522, now seen corresponding path program 1 times [2023-11-29 01:53:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:29,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176541855] [2023-11-29 01:53:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:30,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:30,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 01:53:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:30,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 01:53:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:30,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 01:53:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 01:53:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:30,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:53:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 01:53:30,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:30,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176541855] [2023-11-29 01:53:30,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176541855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:30,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:53:30,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:53:30,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368536189] [2023-11-29 01:53:30,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:30,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:53:30,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:30,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:53:30,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:53:30,426 INFO L87 Difference]: Start difference. First operand has 283 states, 263 states have (on average 1.703422053231939) internal successors, (448), 263 states have internal predecessors, (448), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:53:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:31,017 INFO L93 Difference]: Finished difference Result 564 states and 953 transitions. [2023-11-29 01:53:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:53:31,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2023-11-29 01:53:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:31,034 INFO L225 Difference]: With dead ends: 564 [2023-11-29 01:53:31,034 INFO L226 Difference]: Without dead ends: 281 [2023-11-29 01:53:31,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:53:31,044 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 26 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:31,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 839 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:53:31,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-29 01:53:31,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-29 01:53:31,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 261 states have (on average 1.6896551724137931) internal successors, (441), 262 states have internal predecessors, (441), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 01:53:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 466 transitions. [2023-11-29 01:53:31,111 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 466 transitions. Word has length 65 [2023-11-29 01:53:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:31,112 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 466 transitions. [2023-11-29 01:53:31,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:53:31,113 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 466 transitions. [2023-11-29 01:53:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 01:53:31,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:31,119 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:31,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:53:31,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:31,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash -368473700, now seen corresponding path program 1 times [2023-11-29 01:53:31,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:31,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397702922] [2023-11-29 01:53:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:31,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:31,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 01:53:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 01:53:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 01:53:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 01:53:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:53:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:53:32,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:32,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397702922] [2023-11-29 01:53:32,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397702922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:53:32,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622605002] [2023-11-29 01:53:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:32,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:53:32,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:53:32,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:53:32,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:53:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:32,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:53:32,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:53:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:53:33,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:53:33,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622605002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:33,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:53:33,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-29 01:53:33,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381716578] [2023-11-29 01:53:33,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:33,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:53:33,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:33,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:53:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:53:33,027 INFO L87 Difference]: Start difference. First operand 281 states and 466 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:53:33,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:33,503 INFO L93 Difference]: Finished difference Result 549 states and 918 transitions. [2023-11-29 01:53:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:53:33,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2023-11-29 01:53:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:33,509 INFO L225 Difference]: With dead ends: 549 [2023-11-29 01:53:33,509 INFO L226 Difference]: Without dead ends: 283 [2023-11-29 01:53:33,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:53:33,512 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 24 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:33,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1338 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:53:33,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-29 01:53:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-29 01:53:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 262 states have (on average 1.6870229007633588) internal successors, (442), 264 states have internal predecessors, (442), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-29 01:53:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 469 transitions. [2023-11-29 01:53:33,541 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 469 transitions. Word has length 65 [2023-11-29 01:53:33,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:33,542 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 469 transitions. [2023-11-29 01:53:33,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:53:33,542 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 469 transitions. [2023-11-29 01:53:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 01:53:33,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:33,546 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:53:33,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:53:33,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:53:33,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:33,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1103358313, now seen corresponding path program 1 times [2023-11-29 01:53:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:33,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996987503] [2023-11-29 01:53:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:35,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:53:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:53:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:35,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 01:53:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:35,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 01:53:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 01:53:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 01:53:35,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:35,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996987503] [2023-11-29 01:53:35,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996987503] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:53:35,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544223720] [2023-11-29 01:53:35,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:35,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:53:35,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:53:35,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:53:35,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:53:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:36,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 2564 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:53:36,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:53:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:53:36,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:53:36,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544223720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:36,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:53:36,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-29 01:53:36,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111915145] [2023-11-29 01:53:36,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:53:36,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:36,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:53:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:53:36,182 INFO L87 Difference]: Start difference. First operand 283 states and 469 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:53:36,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:36,497 INFO L93 Difference]: Finished difference Result 548 states and 913 transitions. [2023-11-29 01:53:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:53:36,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2023-11-29 01:53:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:36,501 INFO L225 Difference]: With dead ends: 548 [2023-11-29 01:53:36,501 INFO L226 Difference]: Without dead ends: 283 [2023-11-29 01:53:36,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:53:36,503 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 32 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:36,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1781 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:53:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-29 01:53:36,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-29 01:53:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 262 states have (on average 1.6870229007633588) internal successors, (442), 264 states have internal predecessors, (442), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 01:53:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 468 transitions. [2023-11-29 01:53:36,525 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 468 transitions. Word has length 67 [2023-11-29 01:53:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:36,526 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 468 transitions. [2023-11-29 01:53:36,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:53:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 468 transitions. [2023-11-29 01:53:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 01:53:36,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:36,529 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2023-11-29 01:53:36,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:53:36,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 01:53:36,730 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:36,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:36,730 INFO L85 PathProgramCache]: Analyzing trace with hash -942064516, now seen corresponding path program 2 times [2023-11-29 01:53:36,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:36,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690780495] [2023-11-29 01:53:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:36,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:37,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:37,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:53:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:37,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:53:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:53:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:53:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:53:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 01:53:38,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:38,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690780495] [2023-11-29 01:53:38,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690780495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:53:38,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911254533] [2023-11-29 01:53:38,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:53:38,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:53:38,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:53:38,135 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:53:38,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:53:39,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:53:39,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:53:39,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:53:39,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:53:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:53:39,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:53:39,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911254533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:39,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:53:39,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 11 [2023-11-29 01:53:39,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150432928] [2023-11-29 01:53:39,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:39,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:53:39,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:39,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:53:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:53:39,730 INFO L87 Difference]: Start difference. First operand 283 states and 468 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:53:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:40,262 INFO L93 Difference]: Finished difference Result 311 states and 502 transitions. [2023-11-29 01:53:40,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:53:40,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2023-11-29 01:53:40,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:40,265 INFO L225 Difference]: With dead ends: 311 [2023-11-29 01:53:40,265 INFO L226 Difference]: Without dead ends: 281 [2023-11-29 01:53:40,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:53:40,267 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 38 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:40,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2668 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:53:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-29 01:53:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-29 01:53:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 261 states have (on average 1.685823754789272) internal successors, (440), 262 states have internal predecessors, (440), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 01:53:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 465 transitions. [2023-11-29 01:53:40,284 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 465 transitions. Word has length 69 [2023-11-29 01:53:40,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:40,285 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 465 transitions. [2023-11-29 01:53:40,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:53:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 465 transitions. [2023-11-29 01:53:40,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 01:53:40,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:40,287 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:40,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:53:40,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:53:40,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:40,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash 590835831, now seen corresponding path program 1 times [2023-11-29 01:53:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:40,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647044855] [2023-11-29 01:53:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:40,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:41,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:41,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:53:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:41,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:53:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:53:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:41,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:53:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:41,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:53:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:41,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 01:53:41,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:41,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647044855] [2023-11-29 01:53:41,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647044855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:41,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:53:41,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:53:41,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090707618] [2023-11-29 01:53:41,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:41,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:53:41,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:41,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:53:41,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:53:41,656 INFO L87 Difference]: Start difference. First operand 281 states and 465 transitions. Second operand has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 01:53:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:43,056 INFO L93 Difference]: Finished difference Result 292 states and 479 transitions. [2023-11-29 01:53:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:53:43,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 71 [2023-11-29 01:53:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:43,060 INFO L225 Difference]: With dead ends: 292 [2023-11-29 01:53:43,060 INFO L226 Difference]: Without dead ends: 290 [2023-11-29 01:53:43,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:53:43,061 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 47 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:43,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3382 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:53:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-29 01:53:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2023-11-29 01:53:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 266 states have (on average 1.6729323308270676) internal successors, (445), 268 states have internal predecessors, (445), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2023-11-29 01:53:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 476 transitions. [2023-11-29 01:53:43,081 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 476 transitions. Word has length 71 [2023-11-29 01:53:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:43,082 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 476 transitions. [2023-11-29 01:53:43,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 01:53:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 476 transitions. [2023-11-29 01:53:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 01:53:43,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:43,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:53:43,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:53:43,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:43,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1405869743, now seen corresponding path program 1 times [2023-11-29 01:53:43,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:43,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157788366] [2023-11-29 01:53:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:43,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:44,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:44,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:53:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:53:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:44,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:53:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:44,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:53:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:53:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:53:45,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:45,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157788366] [2023-11-29 01:53:45,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157788366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:45,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:53:45,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 01:53:45,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456956332] [2023-11-29 01:53:45,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:45,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:53:45,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:45,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:53:45,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:53:45,104 INFO L87 Difference]: Start difference. First operand 289 states and 476 transitions. Second operand has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:53:47,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:47,128 INFO L93 Difference]: Finished difference Result 553 states and 918 transitions. [2023-11-29 01:53:47,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:53:47,129 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2023-11-29 01:53:47,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:47,134 INFO L225 Difference]: With dead ends: 553 [2023-11-29 01:53:47,134 INFO L226 Difference]: Without dead ends: 524 [2023-11-29 01:53:47,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:53:47,136 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 451 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:47,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 3651 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:53:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-29 01:53:47,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 308. [2023-11-29 01:53:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 283 states have (on average 1.6819787985865724) internal successors, (476), 286 states have internal predecessors, (476), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-11-29 01:53:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 510 transitions. [2023-11-29 01:53:47,160 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 510 transitions. Word has length 75 [2023-11-29 01:53:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:47,161 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 510 transitions. [2023-11-29 01:53:47,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:53:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 510 transitions. [2023-11-29 01:53:47,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 01:53:47,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:47,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:53:47,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:53:47,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:47,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:47,165 INFO L85 PathProgramCache]: Analyzing trace with hash -782746197, now seen corresponding path program 1 times [2023-11-29 01:53:47,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:47,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020886151] [2023-11-29 01:53:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:47,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:47,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:47,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:53:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:47,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:53:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:53:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:53:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 01:53:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 01:53:47,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:47,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020886151] [2023-11-29 01:53:47,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020886151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:47,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:53:47,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:53:47,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728964832] [2023-11-29 01:53:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:47,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:53:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:47,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:53:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:53:47,675 INFO L87 Difference]: Start difference. First operand 308 states and 510 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:53:48,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:48,356 INFO L93 Difference]: Finished difference Result 423 states and 683 transitions. [2023-11-29 01:53:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:53:48,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2023-11-29 01:53:48,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:48,360 INFO L225 Difference]: With dead ends: 423 [2023-11-29 01:53:48,360 INFO L226 Difference]: Without dead ends: 321 [2023-11-29 01:53:48,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:53:48,361 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 31 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:48,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1215 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:53:48,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-29 01:53:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 318. [2023-11-29 01:53:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 293 states have (on average 1.658703071672355) internal successors, (486), 296 states have internal predecessors, (486), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-11-29 01:53:48,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 520 transitions. [2023-11-29 01:53:48,377 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 520 transitions. Word has length 82 [2023-11-29 01:53:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:48,378 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 520 transitions. [2023-11-29 01:53:48,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:53:48,378 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 520 transitions. [2023-11-29 01:53:48,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 01:53:48,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:48,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:53:48,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:53:48,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:48,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:48,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1709187411, now seen corresponding path program 1 times [2023-11-29 01:53:48,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:48,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266562485] [2023-11-29 01:53:48,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:48,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:53:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:53:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:49,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:53:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:53:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:49,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 01:53:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:53:49,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:49,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266562485] [2023-11-29 01:53:49,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266562485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:49,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:53:49,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 01:53:49,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977246668] [2023-11-29 01:53:49,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:49,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:53:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:49,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:53:49,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:53:49,829 INFO L87 Difference]: Start difference. First operand 318 states and 520 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:53:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:52,475 INFO L93 Difference]: Finished difference Result 577 states and 943 transitions. [2023-11-29 01:53:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:53:52,475 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 82 [2023-11-29 01:53:52,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:52,480 INFO L225 Difference]: With dead ends: 577 [2023-11-29 01:53:52,480 INFO L226 Difference]: Without dead ends: 548 [2023-11-29 01:53:52,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:53:52,482 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 430 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:52,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 3376 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 01:53:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-11-29 01:53:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 338. [2023-11-29 01:53:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 313 states have (on average 1.6613418530351438) internal successors, (520), 316 states have internal predecessors, (520), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-11-29 01:53:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 554 transitions. [2023-11-29 01:53:52,503 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 554 transitions. Word has length 82 [2023-11-29 01:53:52,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:52,504 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 554 transitions. [2023-11-29 01:53:52,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:53:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 554 transitions. [2023-11-29 01:53:52,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 01:53:52,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:52,506 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:53:52,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:53:52,506 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:52,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1681426701, now seen corresponding path program 1 times [2023-11-29 01:53:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:52,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862649400] [2023-11-29 01:53:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:52,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:53:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:53:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:53:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:53:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:53:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 01:53:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 01:53:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 01:53:53,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:53,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862649400] [2023-11-29 01:53:53,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862649400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:53,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:53:53,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:53:53,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286766661] [2023-11-29 01:53:53,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:53,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:53:53,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:53,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:53:53,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:53:53,686 INFO L87 Difference]: Start difference. First operand 338 states and 554 transitions. Second operand has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-29 01:53:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:55,103 INFO L93 Difference]: Finished difference Result 345 states and 560 transitions. [2023-11-29 01:53:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:53:55,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 87 [2023-11-29 01:53:55,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:55,106 INFO L225 Difference]: With dead ends: 345 [2023-11-29 01:53:55,106 INFO L226 Difference]: Without dead ends: 338 [2023-11-29 01:53:55,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:53:55,108 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 44 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:55,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3386 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:53:55,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-29 01:53:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-11-29 01:53:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 313 states have (on average 1.6613418530351438) internal successors, (520), 316 states have internal predecessors, (520), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2023-11-29 01:53:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 553 transitions. [2023-11-29 01:53:55,127 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 553 transitions. Word has length 87 [2023-11-29 01:53:55,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:55,128 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 553 transitions. [2023-11-29 01:53:55,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-29 01:53:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 553 transitions. [2023-11-29 01:53:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 01:53:55,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:55,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:53:55,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:53:55,131 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:55,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:55,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1192246696, now seen corresponding path program 1 times [2023-11-29 01:53:55,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:55,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123928684] [2023-11-29 01:53:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:55,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:55,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:55,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:53:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:53:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:53:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:55,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:53:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 01:53:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 01:53:55,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:55,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123928684] [2023-11-29 01:53:55,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123928684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:55,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:53:55,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:53:55,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393706152] [2023-11-29 01:53:55,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:55,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:53:55,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:55,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:53:55,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:53:55,611 INFO L87 Difference]: Start difference. First operand 338 states and 553 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:53:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:56,183 INFO L93 Difference]: Finished difference Result 472 states and 751 transitions. [2023-11-29 01:53:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:53:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2023-11-29 01:53:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:56,186 INFO L225 Difference]: With dead ends: 472 [2023-11-29 01:53:56,186 INFO L226 Difference]: Without dead ends: 363 [2023-11-29 01:53:56,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:53:56,187 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 36 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:56,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1185 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:53:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-29 01:53:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 360. [2023-11-29 01:53:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 335 states have (on average 1.617910447761194) internal successors, (542), 338 states have internal predecessors, (542), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2023-11-29 01:53:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 575 transitions. [2023-11-29 01:53:56,203 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 575 transitions. Word has length 88 [2023-11-29 01:53:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:56,204 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 575 transitions. [2023-11-29 01:53:56,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:53:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 575 transitions. [2023-11-29 01:53:56,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 01:53:56,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:56,206 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:53:56,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:53:56,206 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:56,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:56,207 INFO L85 PathProgramCache]: Analyzing trace with hash 490133316, now seen corresponding path program 1 times [2023-11-29 01:53:56,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:56,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602603440] [2023-11-29 01:53:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:56,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:53:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:53:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:53:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:57,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:53:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:53:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:53:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:53:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:57,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 01:53:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:53:57,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:57,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602603440] [2023-11-29 01:53:57,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602603440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:57,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:53:57,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 01:53:57,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134872245] [2023-11-29 01:53:57,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:57,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:53:57,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:57,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:53:57,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:53:57,781 INFO L87 Difference]: Start difference. First operand 360 states and 575 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:53:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:59,604 INFO L93 Difference]: Finished difference Result 621 states and 985 transitions. [2023-11-29 01:53:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:53:59,604 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-11-29 01:53:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:59,609 INFO L225 Difference]: With dead ends: 621 [2023-11-29 01:53:59,609 INFO L226 Difference]: Without dead ends: 592 [2023-11-29 01:53:59,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:53:59,610 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 428 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 3667 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:59,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 3667 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 01:53:59,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2023-11-29 01:53:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 386. [2023-11-29 01:53:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 361 states have (on average 1.6121883656509695) internal successors, (582), 364 states have internal predecessors, (582), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2023-11-29 01:53:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 615 transitions. [2023-11-29 01:53:59,628 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 615 transitions. Word has length 88 [2023-11-29 01:53:59,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:59,628 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 615 transitions. [2023-11-29 01:53:59,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:53:59,629 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 615 transitions. [2023-11-29 01:53:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 01:53:59,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:59,631 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:53:59,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:53:59,632 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:59,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:59,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1771668411, now seen corresponding path program 1 times [2023-11-29 01:53:59,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:59,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668958863] [2023-11-29 01:53:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:59,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:54:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:00,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:54:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:00,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:54:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:00,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:54:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:54:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:01,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:54:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:54:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:54:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 01:54:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 01:54:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 01:54:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668958863] [2023-11-29 01:54:01,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668958863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:01,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:01,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:54:01,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5007856] [2023-11-29 01:54:01,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:01,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:54:01,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:54:01,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:54:01,719 INFO L87 Difference]: Start difference. First operand 386 states and 615 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 01:54:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:04,298 INFO L93 Difference]: Finished difference Result 463 states and 711 transitions. [2023-11-29 01:54:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:54:04,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 91 [2023-11-29 01:54:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:04,302 INFO L225 Difference]: With dead ends: 463 [2023-11-29 01:54:04,302 INFO L226 Difference]: Without dead ends: 438 [2023-11-29 01:54:04,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:04,303 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 138 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:04,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 2808 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 01:54:04,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-29 01:54:04,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 393. [2023-11-29 01:54:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 365 states have (on average 1.6054794520547946) internal successors, (586), 368 states have internal predecessors, (586), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (21), 17 states have call predecessors, (21), 16 states have call successors, (21) [2023-11-29 01:54:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 624 transitions. [2023-11-29 01:54:04,323 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 624 transitions. Word has length 91 [2023-11-29 01:54:04,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:04,323 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 624 transitions. [2023-11-29 01:54:04,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 01:54:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 624 transitions. [2023-11-29 01:54:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 01:54:04,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:04,326 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:04,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:54:04,327 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:04,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:04,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1420427775, now seen corresponding path program 1 times [2023-11-29 01:54:04,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:04,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316958377] [2023-11-29 01:54:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:04,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:54:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:54:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:54:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:54:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:54:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:54:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:54:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:54:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 01:54:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 01:54:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 01:54:05,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316958377] [2023-11-29 01:54:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316958377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:05,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:05,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 01:54:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691920572] [2023-11-29 01:54:05,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:05,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:54:05,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:54:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:54:05,811 INFO L87 Difference]: Start difference. First operand 393 states and 624 transitions. Second operand has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 01:54:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:07,954 INFO L93 Difference]: Finished difference Result 600 states and 957 transitions. [2023-11-29 01:54:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:54:07,954 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 92 [2023-11-29 01:54:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:07,958 INFO L225 Difference]: With dead ends: 600 [2023-11-29 01:54:07,958 INFO L226 Difference]: Without dead ends: 582 [2023-11-29 01:54:07,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:54:07,959 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 445 mSDsluCounter, 3654 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:07,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 4037 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:54:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-29 01:54:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 386. [2023-11-29 01:54:07,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 361 states have (on average 1.6094182825484764) internal successors, (581), 364 states have internal predecessors, (581), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2023-11-29 01:54:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 614 transitions. [2023-11-29 01:54:07,979 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 614 transitions. Word has length 92 [2023-11-29 01:54:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:07,979 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 614 transitions. [2023-11-29 01:54:07,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 01:54:07,979 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 614 transitions. [2023-11-29 01:54:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 01:54:07,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:07,981 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:07,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:54:07,982 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:07,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:07,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1836295881, now seen corresponding path program 1 times [2023-11-29 01:54:07,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:07,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418311983] [2023-11-29 01:54:07,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:07,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:54:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:54:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:54:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 01:54:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:54:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:54:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:54:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:09,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 01:54:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:54:09,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:09,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418311983] [2023-11-29 01:54:09,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418311983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:09,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391962238] [2023-11-29 01:54:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:09,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:09,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:09,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:09,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:54:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:10,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 2646 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 01:54:10,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:54:11,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:11,696 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 01:54:11,697 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 01:54:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 01:54:11,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391962238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:11,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:11,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 30 [2023-11-29 01:54:11,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820041532] [2023-11-29 01:54:11,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:11,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 01:54:11,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:11,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 01:54:11,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2023-11-29 01:54:11,715 INFO L87 Difference]: Start difference. First operand 386 states and 614 transitions. Second operand has 30 states, 28 states have (on average 6.392857142857143) internal successors, (179), 26 states have internal predecessors, (179), 13 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (22), 11 states have call predecessors, (22), 13 states have call successors, (22) [2023-11-29 01:54:17,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:17,387 INFO L93 Difference]: Finished difference Result 1625 states and 2628 transitions. [2023-11-29 01:54:17,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 01:54:17,388 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 6.392857142857143) internal successors, (179), 26 states have internal predecessors, (179), 13 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (22), 11 states have call predecessors, (22), 13 states have call successors, (22) Word has length 92 [2023-11-29 01:54:17,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:17,393 INFO L225 Difference]: With dead ends: 1625 [2023-11-29 01:54:17,394 INFO L226 Difference]: Without dead ends: 655 [2023-11-29 01:54:17,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 180 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=328, Invalid=2534, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 01:54:17,397 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 2017 mSDsluCounter, 7293 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 7668 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:17,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 7668 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 01:54:17,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-29 01:54:17,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 446. [2023-11-29 01:54:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 417 states have (on average 1.6115107913669064) internal successors, (672), 420 states have internal predecessors, (672), 18 states have call successors, (18), 8 states have call predecessors, (18), 10 states have return successors, (22), 17 states have call predecessors, (22), 17 states have call successors, (22) [2023-11-29 01:54:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 712 transitions. [2023-11-29 01:54:17,424 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 712 transitions. Word has length 92 [2023-11-29 01:54:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:17,425 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 712 transitions. [2023-11-29 01:54:17,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 6.392857142857143) internal successors, (179), 26 states have internal predecessors, (179), 13 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (22), 11 states have call predecessors, (22), 13 states have call successors, (22) [2023-11-29 01:54:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 712 transitions. [2023-11-29 01:54:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 01:54:17,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:17,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2023-11-29 01:54:17,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:54:17,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:54:17,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:17,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash -17566709, now seen corresponding path program 1 times [2023-11-29 01:54:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:17,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694318315] [2023-11-29 01:54:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:17,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:54:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:18,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:54:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:18,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:54:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 01:54:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 01:54:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:18,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 01:54:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:18,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 01:54:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 01:54:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 01:54:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 01:54:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 01:54:19,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:19,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694318315] [2023-11-29 01:54:19,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694318315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:19,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:19,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:54:19,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292613401] [2023-11-29 01:54:19,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:19,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:54:19,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:19,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:54:19,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:54:19,355 INFO L87 Difference]: Start difference. First operand 446 states and 712 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 01:54:21,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:21,570 INFO L93 Difference]: Finished difference Result 525 states and 812 transitions. [2023-11-29 01:54:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:54:21,570 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 102 [2023-11-29 01:54:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:21,574 INFO L225 Difference]: With dead ends: 525 [2023-11-29 01:54:21,574 INFO L226 Difference]: Without dead ends: 500 [2023-11-29 01:54:21,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:21,575 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 131 mSDsluCounter, 2377 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:21,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 2776 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 01:54:21,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-29 01:54:21,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 455. [2023-11-29 01:54:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 422 states have (on average 1.6042654028436019) internal successors, (677), 425 states have internal predecessors, (677), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2023-11-29 01:54:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 725 transitions. [2023-11-29 01:54:21,601 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 725 transitions. Word has length 102 [2023-11-29 01:54:21,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:21,601 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 725 transitions. [2023-11-29 01:54:21,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-29 01:54:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 725 transitions. [2023-11-29 01:54:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 01:54:21,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:21,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:21,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:54:21,606 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:21,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:21,606 INFO L85 PathProgramCache]: Analyzing trace with hash 969438665, now seen corresponding path program 1 times [2023-11-29 01:54:21,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:21,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723417822] [2023-11-29 01:54:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:21,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:22,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:54:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:22,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:54:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:54:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 01:54:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 01:54:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 01:54:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 01:54:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:22,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 01:54:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 01:54:22,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:22,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723417822] [2023-11-29 01:54:22,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723417822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:22,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346525683] [2023-11-29 01:54:22,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:22,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:22,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:22,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:22,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:54:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:23,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:54:23,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 01:54:23,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:54:23,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346525683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:23,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:54:23,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-29 01:54:23,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401397311] [2023-11-29 01:54:23,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:23,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:54:23,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:54:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:23,042 INFO L87 Difference]: Start difference. First operand 455 states and 725 transitions. Second operand has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:54:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:23,909 INFO L93 Difference]: Finished difference Result 899 states and 1438 transitions. [2023-11-29 01:54:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:54:23,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 100 [2023-11-29 01:54:23,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:23,911 INFO L225 Difference]: With dead ends: 899 [2023-11-29 01:54:23,911 INFO L226 Difference]: Without dead ends: 459 [2023-11-29 01:54:23,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:54:23,914 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 13 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3616 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:23,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3616 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:54:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-29 01:54:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2023-11-29 01:54:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 425 states have (on average 1.6) internal successors, (680), 429 states have internal predecessors, (680), 21 states have call successors, (21), 8 states have call predecessors, (21), 12 states have return successors, (30), 21 states have call predecessors, (30), 20 states have call successors, (30) [2023-11-29 01:54:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 731 transitions. [2023-11-29 01:54:23,938 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 731 transitions. Word has length 100 [2023-11-29 01:54:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:23,938 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 731 transitions. [2023-11-29 01:54:23,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:54:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 731 transitions. [2023-11-29 01:54:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 01:54:23,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:23,942 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:23,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:54:24,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:54:24,143 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:24,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:24,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1720171250, now seen corresponding path program 1 times [2023-11-29 01:54:24,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:24,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894675931] [2023-11-29 01:54:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:24,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:54:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:24,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:54:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:54:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:54:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:54:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 01:54:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:54:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 01:54:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 01:54:25,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894675931] [2023-11-29 01:54:25,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894675931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168864383] [2023-11-29 01:54:25,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:25,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:25,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:25,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:25,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:54:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:25,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:54:25,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 01:54:26,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:54:26,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168864383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:26,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:54:26,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-29 01:54:26,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929598027] [2023-11-29 01:54:26,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:26,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:54:26,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:54:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:54:26,009 INFO L87 Difference]: Start difference. First operand 459 states and 731 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:54:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:27,127 INFO L93 Difference]: Finished difference Result 903 states and 1447 transitions. [2023-11-29 01:54:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:54:27,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2023-11-29 01:54:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:27,131 INFO L225 Difference]: With dead ends: 903 [2023-11-29 01:54:27,131 INFO L226 Difference]: Without dead ends: 459 [2023-11-29 01:54:27,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:54:27,134 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 18 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:27,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1788 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:54:27,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-29 01:54:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2023-11-29 01:54:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 425 states have (on average 1.5976470588235294) internal successors, (679), 429 states have internal predecessors, (679), 21 states have call successors, (21), 8 states have call predecessors, (21), 12 states have return successors, (30), 21 states have call predecessors, (30), 20 states have call successors, (30) [2023-11-29 01:54:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 730 transitions. [2023-11-29 01:54:27,161 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 730 transitions. Word has length 102 [2023-11-29 01:54:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:27,162 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 730 transitions. [2023-11-29 01:54:27,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 01:54:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 730 transitions. [2023-11-29 01:54:27,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 01:54:27,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:27,166 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:54:27,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:54:27,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:54:27,368 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:27,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash -395315056, now seen corresponding path program 1 times [2023-11-29 01:54:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:27,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360685231] [2023-11-29 01:54:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:27,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:54:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:54:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:54:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:54:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:54:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 01:54:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:54:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 01:54:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 01:54:28,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:28,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360685231] [2023-11-29 01:54:28,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360685231] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:28,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243011285] [2023-11-29 01:54:28,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:28,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:28,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:28,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:28,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:54:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:28,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:54:28,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:54:28,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:54:28,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243011285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:28,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:54:28,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-29 01:54:28,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003178526] [2023-11-29 01:54:28,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:28,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:54:28,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:54:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:54:28,827 INFO L87 Difference]: Start difference. First operand 459 states and 730 transitions. Second operand has 9 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:54:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:29,703 INFO L93 Difference]: Finished difference Result 886 states and 1415 transitions. [2023-11-29 01:54:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:54:29,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 102 [2023-11-29 01:54:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:29,706 INFO L225 Difference]: With dead ends: 886 [2023-11-29 01:54:29,706 INFO L226 Difference]: Without dead ends: 459 [2023-11-29 01:54:29,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:54:29,707 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 12 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3612 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:29,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3612 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:54:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-29 01:54:29,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2023-11-29 01:54:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 425 states have (on average 1.5976470588235294) internal successors, (679), 429 states have internal predecessors, (679), 21 states have call successors, (21), 8 states have call predecessors, (21), 12 states have return successors, (29), 21 states have call predecessors, (29), 20 states have call successors, (29) [2023-11-29 01:54:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 729 transitions. [2023-11-29 01:54:29,725 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 729 transitions. Word has length 102 [2023-11-29 01:54:29,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:29,726 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 729 transitions. [2023-11-29 01:54:29,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 01:54:29,726 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 729 transitions. [2023-11-29 01:54:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 01:54:29,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:29,728 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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] [2023-11-29 01:54:29,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:54:29,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:54:29,929 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:29,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:29,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1254672686, now seen corresponding path program 1 times [2023-11-29 01:54:29,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:29,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375206687] [2023-11-29 01:54:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:29,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:54:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:30,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:54:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:30,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:54:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:54:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:54:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:30,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:54:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:54:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:31,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 01:54:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:31,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 01:54:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:54:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 01:54:31,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:31,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375206687] [2023-11-29 01:54:31,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375206687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:31,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636518005] [2023-11-29 01:54:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:31,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:31,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:31,045 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:31,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:54:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:31,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 01:54:31,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 01:54:32,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:32,753 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 01:54:32,753 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 01:54:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 01:54:32,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636518005] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:32,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:32,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 11] total 31 [2023-11-29 01:54:32,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114606784] [2023-11-29 01:54:32,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:32,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 01:54:32,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:32,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 01:54:32,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:54:32,766 INFO L87 Difference]: Start difference. First operand 459 states and 729 transitions. Second operand has 31 states, 29 states have (on average 5.931034482758621) internal successors, (172), 27 states have internal predecessors, (172), 13 states have call successors, (26), 4 states have call predecessors, (26), 8 states have return successors, (26), 11 states have call predecessors, (26), 13 states have call successors, (26) [2023-11-29 01:54:38,716 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 01:54:42,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:54:48,430 WARN L539 Checker$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 01:54:49,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:49,947 INFO L93 Difference]: Finished difference Result 1088 states and 1728 transitions. [2023-11-29 01:54:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:54:49,948 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 5.931034482758621) internal successors, (172), 27 states have internal predecessors, (172), 13 states have call successors, (26), 4 states have call predecessors, (26), 8 states have return successors, (26), 11 states have call predecessors, (26), 13 states have call successors, (26) Word has length 105 [2023-11-29 01:54:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:49,950 INFO L225 Difference]: With dead ends: 1088 [2023-11-29 01:54:49,950 INFO L226 Difference]: Without dead ends: 642 [2023-11-29 01:54:49,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 209 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=273, Invalid=1983, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:54:49,952 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1254 mSDsluCounter, 6848 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 66 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 7222 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:49,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 7222 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2249 Invalid, 3 Unknown, 0 Unchecked, 16.0s Time] [2023-11-29 01:54:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-11-29 01:54:49,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 394. [2023-11-29 01:54:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 371 states have (on average 1.5849056603773586) internal successors, (588), 373 states have internal predecessors, (588), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-29 01:54:49,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 615 transitions. [2023-11-29 01:54:49,972 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 615 transitions. Word has length 105 [2023-11-29 01:54:49,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:49,972 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 615 transitions. [2023-11-29 01:54:49,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 5.931034482758621) internal successors, (172), 27 states have internal predecessors, (172), 13 states have call successors, (26), 4 states have call predecessors, (26), 8 states have return successors, (26), 11 states have call predecessors, (26), 13 states have call successors, (26) [2023-11-29 01:54:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 615 transitions. [2023-11-29 01:54:49,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 01:54:49,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:49,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:54:49,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:54:50,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:50,175 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:54:50,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:50,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1445951703, now seen corresponding path program 2 times [2023-11-29 01:54:50,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:50,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974133547] [2023-11-29 01:54:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:50,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:52,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:54:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:52,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:54:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:54:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:54:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:54:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:52,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:54:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:52,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 01:54:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 01:54:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:54:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 01:54:52,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:52,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974133547] [2023-11-29 01:54:52,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974133547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:54:52,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384354500] [2023-11-29 01:54:52,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:54:52,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:52,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:52,479 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:52,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:54:56,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:54:56,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:54:56,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 01:54:56,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:56,617 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 01:54:56,621 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 01:54:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:54:58,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:54:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 01:54:59,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384354500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:54:59,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:54:59,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 13] total 36 [2023-11-29 01:54:59,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797133903] [2023-11-29 01:54:59,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:54:59,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 01:54:59,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 01:54:59,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 01:54:59,045 INFO L87 Difference]: Start difference. First operand 394 states and 615 transitions. Second operand has 36 states, 35 states have (on average 4.942857142857143) internal successors, (173), 33 states have internal predecessors, (173), 12 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (23), 11 states have call predecessors, (23), 12 states have call successors, (23) [2023-11-29 01:55:03,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:55:08,482 WARN L539 Checker$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 01:55:13,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:55:17,024 WARN L539 Checker$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 01:55:19,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:19,140 INFO L93 Difference]: Finished difference Result 785 states and 1228 transitions. [2023-11-29 01:55:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:55:19,140 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.942857142857143) internal successors, (173), 33 states have internal predecessors, (173), 12 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (23), 11 states have call predecessors, (23), 12 states have call successors, (23) Word has length 104 [2023-11-29 01:55:19,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:19,143 INFO L225 Difference]: With dead ends: 785 [2023-11-29 01:55:19,143 INFO L226 Difference]: Without dead ends: 408 [2023-11-29 01:55:19,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 193 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=499, Invalid=2693, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 01:55:19,145 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 541 mSDsluCounter, 7779 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 66 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 8201 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:19,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 8201 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1121 Invalid, 4 Unknown, 0 Unchecked, 18.4s Time] [2023-11-29 01:55:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-29 01:55:19,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 396. [2023-11-29 01:55:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 373 states have (on average 1.579088471849866) internal successors, (589), 375 states have internal predecessors, (589), 13 states have call successors, (13), 8 states have call predecessors, (13), 9 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-29 01:55:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 616 transitions. [2023-11-29 01:55:19,162 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 616 transitions. Word has length 104 [2023-11-29 01:55:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:19,162 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 616 transitions. [2023-11-29 01:55:19,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.942857142857143) internal successors, (173), 33 states have internal predecessors, (173), 12 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (23), 11 states have call predecessors, (23), 12 states have call successors, (23) [2023-11-29 01:55:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 616 transitions. [2023-11-29 01:55:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 01:55:19,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:19,165 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:55:19,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:55:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be7e6db5-8964-4c3e-be8e-d82e16c13e1c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:19,366 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:19,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1478049474, now seen corresponding path program 1 times [2023-11-29 01:55:19,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:19,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743373142] [2023-11-29 01:55:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:55:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:55:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:55:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:55:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:55:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:55:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:55:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 01:55:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 01:55:20,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:20,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743373142] [2023-11-29 01:55:20,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743373142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:20,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:20,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 01:55:20,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181970982] [2023-11-29 01:55:20,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:20,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:55:20,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:55:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:55:20,810 INFO L87 Difference]: Start difference. First operand 396 states and 616 transitions. Second operand has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:22,935 INFO L93 Difference]: Finished difference Result 698 states and 1090 transitions. [2023-11-29 01:55:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:55:22,936 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 114 [2023-11-29 01:55:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:22,938 INFO L225 Difference]: With dead ends: 698 [2023-11-29 01:55:22,938 INFO L226 Difference]: Without dead ends: 666 [2023-11-29 01:55:22,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:55:22,939 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 498 mSDsluCounter, 3708 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 4096 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:22,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 4096 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:55:22,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-11-29 01:55:22,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 456. [2023-11-29 01:55:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 430 states have (on average 1.583720930232558) internal successors, (681), 434 states have internal predecessors, (681), 14 states have call successors, (14), 8 states have call predecessors, (14), 11 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2023-11-29 01:55:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 714 transitions. [2023-11-29 01:55:22,955 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 714 transitions. Word has length 114 [2023-11-29 01:55:22,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:22,956 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 714 transitions. [2023-11-29 01:55:22,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 714 transitions. [2023-11-29 01:55:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 01:55:22,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:22,957 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:55:22,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:55:22,958 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:22,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:22,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2060612323, now seen corresponding path program 1 times [2023-11-29 01:55:22,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:22,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39041578] [2023-11-29 01:55:22,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:22,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:23,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:55:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:23,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:55:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:23,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:55:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:23,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:55:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:23,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:55:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:23,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:55:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:23,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:55:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 01:55:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:55:24,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:24,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39041578] [2023-11-29 01:55:24,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39041578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:24,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:24,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:55:24,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402562421] [2023-11-29 01:55:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:55:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:55:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:55:24,640 INFO L87 Difference]: Start difference. First operand 456 states and 714 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:26,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:26,800 INFO L93 Difference]: Finished difference Result 577 states and 880 transitions. [2023-11-29 01:55:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:55:26,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 115 [2023-11-29 01:55:26,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:26,805 INFO L225 Difference]: With dead ends: 577 [2023-11-29 01:55:26,805 INFO L226 Difference]: Without dead ends: 489 [2023-11-29 01:55:26,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:55:26,806 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 251 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:26,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 2617 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 01:55:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-29 01:55:26,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 458. [2023-11-29 01:55:26,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 432 states have (on average 1.5810185185185186) internal successors, (683), 436 states have internal predecessors, (683), 14 states have call successors, (14), 8 states have call predecessors, (14), 11 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2023-11-29 01:55:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 716 transitions. [2023-11-29 01:55:26,825 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 716 transitions. Word has length 115 [2023-11-29 01:55:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:26,826 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 716 transitions. [2023-11-29 01:55:26,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 716 transitions. [2023-11-29 01:55:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:55:26,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:26,829 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:55:26,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:55:26,829 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:26,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash 569829918, now seen corresponding path program 1 times [2023-11-29 01:55:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:26,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140558139] [2023-11-29 01:55:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:26,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:27,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:27,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:55:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:27,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:55:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:27,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:28,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:55:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:28,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:55:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:28,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:55:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:55:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:55:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:29,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 01:55:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:55:29,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:29,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140558139] [2023-11-29 01:55:29,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140558139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:29,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:29,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 01:55:29,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538027309] [2023-11-29 01:55:29,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:29,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:55:29,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:29,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:55:29,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:55:29,260 INFO L87 Difference]: Start difference. First operand 458 states and 716 transitions. Second operand has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:33,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:33,628 INFO L93 Difference]: Finished difference Result 600 states and 915 transitions. [2023-11-29 01:55:33,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:55:33,628 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2023-11-29 01:55:33,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:33,631 INFO L225 Difference]: With dead ends: 600 [2023-11-29 01:55:33,631 INFO L226 Difference]: Without dead ends: 519 [2023-11-29 01:55:33,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:55:33,632 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 220 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 4424 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:33,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 4424 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 01:55:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-11-29 01:55:33,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 477. [2023-11-29 01:55:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 451 states have (on average 1.5787139689578713) internal successors, (712), 455 states have internal predecessors, (712), 14 states have call successors, (14), 8 states have call predecessors, (14), 11 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2023-11-29 01:55:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 745 transitions. [2023-11-29 01:55:33,652 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 745 transitions. Word has length 116 [2023-11-29 01:55:33,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:33,653 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 745 transitions. [2023-11-29 01:55:33,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 745 transitions. [2023-11-29 01:55:33,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:55:33,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:33,654 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:55:33,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 01:55:33,654 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:33,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1907713657, now seen corresponding path program 1 times [2023-11-29 01:55:33,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289710996] [2023-11-29 01:55:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:33,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:34,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:55:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:55:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:55:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:34,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:55:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:34,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:55:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:34,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:55:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:34,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:55:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:35,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 01:55:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:55:35,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:35,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289710996] [2023-11-29 01:55:35,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289710996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:35,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:35,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:55:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88059243] [2023-11-29 01:55:35,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:35,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:55:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:35,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:55:35,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:55:35,354 INFO L87 Difference]: Start difference. First operand 477 states and 745 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:37,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:37,983 INFO L93 Difference]: Finished difference Result 599 states and 912 transitions. [2023-11-29 01:55:37,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:55:37,984 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2023-11-29 01:55:37,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:37,986 INFO L225 Difference]: With dead ends: 599 [2023-11-29 01:55:37,986 INFO L226 Difference]: Without dead ends: 511 [2023-11-29 01:55:37,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:55:37,986 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 403 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:37,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 2562 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 01:55:37,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-11-29 01:55:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 479. [2023-11-29 01:55:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 453 states have (on average 1.576158940397351) internal successors, (714), 457 states have internal predecessors, (714), 14 states have call successors, (14), 8 states have call predecessors, (14), 11 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2023-11-29 01:55:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 747 transitions. [2023-11-29 01:55:38,012 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 747 transitions. Word has length 116 [2023-11-29 01:55:38,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:38,012 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 747 transitions. [2023-11-29 01:55:38,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:38,012 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 747 transitions. [2023-11-29 01:55:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:55:38,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:38,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:38,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 01:55:38,014 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:38,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:38,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1630322603, now seen corresponding path program 1 times [2023-11-29 01:55:38,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:38,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265231346] [2023-11-29 01:55:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:38,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:55:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:55:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:55:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:55:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:55:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:55:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:55:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 01:55:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 01:55:39,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:39,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265231346] [2023-11-29 01:55:39,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265231346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:39,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:39,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 01:55:39,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517296818] [2023-11-29 01:55:39,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:39,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:55:39,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:55:39,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:55:39,387 INFO L87 Difference]: Start difference. First operand 479 states and 747 transitions. Second operand has 15 states, 13 states have (on average 5.538461538461538) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-29 01:55:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:42,097 INFO L93 Difference]: Finished difference Result 487 states and 755 transitions. [2023-11-29 01:55:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:55:42,098 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.538461538461538) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 116 [2023-11-29 01:55:42,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:42,101 INFO L225 Difference]: With dead ends: 487 [2023-11-29 01:55:42,101 INFO L226 Difference]: Without dead ends: 485 [2023-11-29 01:55:42,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:55:42,103 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 60 mSDsluCounter, 5486 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 5923 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:42,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 5923 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 01:55:42,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-11-29 01:55:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 484. [2023-11-29 01:55:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 456 states have (on average 1.5723684210526316) internal successors, (717), 460 states have internal predecessors, (717), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:55:42,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 752 transitions. [2023-11-29 01:55:42,124 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 752 transitions. Word has length 116 [2023-11-29 01:55:42,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:42,125 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 752 transitions. [2023-11-29 01:55:42,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.538461538461538) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-29 01:55:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 752 transitions. [2023-11-29 01:55:42,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:55:42,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:42,127 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:55:42,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 01:55:42,128 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:42,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash 409084539, now seen corresponding path program 1 times [2023-11-29 01:55:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:42,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925751659] [2023-11-29 01:55:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:42,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:55:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:55:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:55:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:55:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:55:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:55:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:55:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 01:55:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:55:42,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:42,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925751659] [2023-11-29 01:55:42,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925751659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:42,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:42,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:55:42,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940476205] [2023-11-29 01:55:42,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:42,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:55:42,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:42,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:55:42,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:55:42,761 INFO L87 Difference]: Start difference. First operand 484 states and 752 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 01:55:44,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:44,042 INFO L93 Difference]: Finished difference Result 727 states and 1127 transitions. [2023-11-29 01:55:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:55:44,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 116 [2023-11-29 01:55:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:44,046 INFO L225 Difference]: With dead ends: 727 [2023-11-29 01:55:44,046 INFO L226 Difference]: Without dead ends: 680 [2023-11-29 01:55:44,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:55:44,047 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 573 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:44,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 3668 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:55:44,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-11-29 01:55:44,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 474. [2023-11-29 01:55:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 446 states have (on average 1.562780269058296) internal successors, (697), 450 states have internal predecessors, (697), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:55:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 732 transitions. [2023-11-29 01:55:44,066 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 732 transitions. Word has length 116 [2023-11-29 01:55:44,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:44,066 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 732 transitions. [2023-11-29 01:55:44,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 01:55:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 732 transitions. [2023-11-29 01:55:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:55:44,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:44,068 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:55:44,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 01:55:44,068 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:44,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash 432278919, now seen corresponding path program 1 times [2023-11-29 01:55:44,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:44,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119617239] [2023-11-29 01:55:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:55:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:55:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:55:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:55:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:55:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:55:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:55:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 01:55:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 01:55:45,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:45,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119617239] [2023-11-29 01:55:45,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119617239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:45,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:45,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 01:55:45,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133286496] [2023-11-29 01:55:45,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:45,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:55:45,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:45,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:55:45,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:55:45,677 INFO L87 Difference]: Start difference. First operand 474 states and 732 transitions. Second operand has 13 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:47,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:47,841 INFO L93 Difference]: Finished difference Result 791 states and 1228 transitions. [2023-11-29 01:55:47,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:55:47,841 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2023-11-29 01:55:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:47,846 INFO L225 Difference]: With dead ends: 791 [2023-11-29 01:55:47,846 INFO L226 Difference]: Without dead ends: 748 [2023-11-29 01:55:47,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:55:47,847 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 541 mSDsluCounter, 4386 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 4860 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:47,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 4860 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:55:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-11-29 01:55:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 475. [2023-11-29 01:55:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 447 states have (on average 1.5615212527964206) internal successors, (698), 451 states have internal predecessors, (698), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:55:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 733 transitions. [2023-11-29 01:55:47,875 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 733 transitions. Word has length 116 [2023-11-29 01:55:47,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:47,876 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 733 transitions. [2023-11-29 01:55:47,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:47,876 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 733 transitions. [2023-11-29 01:55:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 01:55:47,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:47,878 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:55:47,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 01:55:47,878 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:47,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:47,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1654162346, now seen corresponding path program 1 times [2023-11-29 01:55:47,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:47,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211716959] [2023-11-29 01:55:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:47,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:49,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:55:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:49,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:55:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:49,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:49,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:55:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:49,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:55:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:49,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:55:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:49,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:55:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:49,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:55:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:50,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 01:55:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:55:50,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:50,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211716959] [2023-11-29 01:55:50,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211716959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:50,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:50,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 01:55:50,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784402344] [2023-11-29 01:55:50,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:50,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:55:50,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:55:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:55:50,778 INFO L87 Difference]: Start difference. First operand 475 states and 733 transitions. Second operand has 17 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:55:56,972 INFO L93 Difference]: Finished difference Result 631 states and 949 transitions. [2023-11-29 01:55:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:55:56,973 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 117 [2023-11-29 01:55:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:55:56,975 INFO L225 Difference]: With dead ends: 631 [2023-11-29 01:55:56,975 INFO L226 Difference]: Without dead ends: 552 [2023-11-29 01:55:56,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:55:56,976 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 411 mSDsluCounter, 4418 mSDsCounter, 0 mSdLazyCounter, 3438 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 4891 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:55:56,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 4891 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3438 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-29 01:55:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-11-29 01:55:56,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 493. [2023-11-29 01:55:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 465 states have (on average 1.5569892473118279) internal successors, (724), 469 states have internal predecessors, (724), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:55:56,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 759 transitions. [2023-11-29 01:55:56,994 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 759 transitions. Word has length 117 [2023-11-29 01:55:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:56,994 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 759 transitions. [2023-11-29 01:55:56,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:55:56,995 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 759 transitions. [2023-11-29 01:55:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 01:55:56,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:56,996 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:55:56,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 01:55:56,997 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:56,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:56,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1940212046, now seen corresponding path program 1 times [2023-11-29 01:55:56,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:56,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587573950] [2023-11-29 01:55:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:56,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:55:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:55:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:58,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:55:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:55:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:58,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:55:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:55:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:58,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:55:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:55:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 01:55:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:55:59,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:59,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587573950] [2023-11-29 01:55:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587573950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:55:59,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:55:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 01:55:59,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203355884] [2023-11-29 01:55:59,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:55:59,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:55:59,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:55:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:55:59,354 INFO L87 Difference]: Start difference. First operand 493 states and 759 transitions. Second operand has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:03,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:03,350 INFO L93 Difference]: Finished difference Result 648 states and 978 transitions. [2023-11-29 01:56:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:56:03,350 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 117 [2023-11-29 01:56:03,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:03,353 INFO L225 Difference]: With dead ends: 648 [2023-11-29 01:56:03,353 INFO L226 Difference]: Without dead ends: 558 [2023-11-29 01:56:03,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:56:03,354 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 373 mSDsluCounter, 3129 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:03,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 3628 Invalid, 2409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 01:56:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-29 01:56:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 496. [2023-11-29 01:56:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 468 states have (on average 1.5555555555555556) internal successors, (728), 472 states have internal predecessors, (728), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:56:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 763 transitions. [2023-11-29 01:56:03,371 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 763 transitions. Word has length 117 [2023-11-29 01:56:03,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:03,372 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 763 transitions. [2023-11-29 01:56:03,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 763 transitions. [2023-11-29 01:56:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 01:56:03,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:03,374 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:56:03,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 01:56:03,374 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:03,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1112608424, now seen corresponding path program 1 times [2023-11-29 01:56:03,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:03,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12984895] [2023-11-29 01:56:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:03,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:56:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:56:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:56:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:56:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:56:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:56:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:56:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 01:56:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:56:03,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:03,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12984895] [2023-11-29 01:56:03,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12984895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:03,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:03,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:56:03,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503759512] [2023-11-29 01:56:03,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:03,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:56:03,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:03,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:56:03,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:56:03,719 INFO L87 Difference]: Start difference. First operand 496 states and 763 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 01:56:04,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:04,625 INFO L93 Difference]: Finished difference Result 717 states and 1090 transitions. [2023-11-29 01:56:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:56:04,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2023-11-29 01:56:04,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:04,630 INFO L225 Difference]: With dead ends: 717 [2023-11-29 01:56:04,630 INFO L226 Difference]: Without dead ends: 597 [2023-11-29 01:56:04,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:56:04,632 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 141 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:04,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1601 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:56:04,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-11-29 01:56:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 551. [2023-11-29 01:56:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 523 states have (on average 1.5487571701720841) internal successors, (810), 527 states have internal predecessors, (810), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:56:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 845 transitions. [2023-11-29 01:56:04,659 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 845 transitions. Word has length 117 [2023-11-29 01:56:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:04,659 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 845 transitions. [2023-11-29 01:56:04,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 01:56:04,660 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 845 transitions. [2023-11-29 01:56:04,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 01:56:04,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:04,661 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:56:04,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 01:56:04,662 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:04,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash -966116286, now seen corresponding path program 1 times [2023-11-29 01:56:04,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:04,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249084305] [2023-11-29 01:56:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:05,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:05,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:56:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:56:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:56:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:56:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:56:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:05,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:56:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:56:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 01:56:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:56:06,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:06,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249084305] [2023-11-29 01:56:06,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249084305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:06,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:06,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 01:56:06,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304203221] [2023-11-29 01:56:06,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:06,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:56:06,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:56:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:56:06,964 INFO L87 Difference]: Start difference. First operand 551 states and 845 transitions. Second operand has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:10,704 INFO L93 Difference]: Finished difference Result 716 states and 1079 transitions. [2023-11-29 01:56:10,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:56:10,704 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 117 [2023-11-29 01:56:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:10,707 INFO L225 Difference]: With dead ends: 716 [2023-11-29 01:56:10,707 INFO L226 Difference]: Without dead ends: 619 [2023-11-29 01:56:10,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:56:10,708 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 421 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:10,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 3396 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 01:56:10,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-11-29 01:56:10,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 560. [2023-11-29 01:56:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 532 states have (on average 1.5469924812030076) internal successors, (823), 536 states have internal predecessors, (823), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:56:10,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 858 transitions. [2023-11-29 01:56:10,728 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 858 transitions. Word has length 117 [2023-11-29 01:56:10,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:10,729 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 858 transitions. [2023-11-29 01:56:10,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 858 transitions. [2023-11-29 01:56:10,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 01:56:10,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:10,730 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:56:10,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 01:56:10,731 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:10,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:10,731 INFO L85 PathProgramCache]: Analyzing trace with hash 924705272, now seen corresponding path program 1 times [2023-11-29 01:56:10,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:10,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468883153] [2023-11-29 01:56:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:10,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:11,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:56:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:56:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:11,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:56:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:56:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:56:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:56:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:56:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:12,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 01:56:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:56:12,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:12,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468883153] [2023-11-29 01:56:12,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468883153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:12,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:56:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363685808] [2023-11-29 01:56:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:12,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:56:12,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:56:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:56:12,658 INFO L87 Difference]: Start difference. First operand 560 states and 858 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:15,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:15,046 INFO L93 Difference]: Finished difference Result 719 states and 1082 transitions. [2023-11-29 01:56:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:56:15,047 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 117 [2023-11-29 01:56:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:15,049 INFO L225 Difference]: With dead ends: 719 [2023-11-29 01:56:15,049 INFO L226 Difference]: Without dead ends: 606 [2023-11-29 01:56:15,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:56:15,050 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 249 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:15,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 2561 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 01:56:15,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-11-29 01:56:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 563. [2023-11-29 01:56:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 535 states have (on average 1.5457943925233646) internal successors, (827), 539 states have internal predecessors, (827), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:56:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 862 transitions. [2023-11-29 01:56:15,065 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 862 transitions. Word has length 117 [2023-11-29 01:56:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:15,065 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 862 transitions. [2023-11-29 01:56:15,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 862 transitions. [2023-11-29 01:56:15,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 01:56:15,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:15,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:56:15,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 01:56:15,067 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:15,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:15,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1035679597, now seen corresponding path program 1 times [2023-11-29 01:56:15,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:15,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839408529] [2023-11-29 01:56:15,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:15,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:56:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:56:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:56:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:56:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:56:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:56:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:56:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 01:56:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:56:18,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:18,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839408529] [2023-11-29 01:56:18,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839408529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:18,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:18,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-29 01:56:18,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600655772] [2023-11-29 01:56:18,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:18,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 01:56:18,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:18,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 01:56:18,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:56:18,395 INFO L87 Difference]: Start difference. First operand 563 states and 862 transitions. Second operand has 21 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:26,661 INFO L93 Difference]: Finished difference Result 749 states and 1120 transitions. [2023-11-29 01:56:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 01:56:26,662 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2023-11-29 01:56:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:26,665 INFO L225 Difference]: With dead ends: 749 [2023-11-29 01:56:26,665 INFO L226 Difference]: Without dead ends: 668 [2023-11-29 01:56:26,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 01:56:26,666 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 608 mSDsluCounter, 5192 mSDsCounter, 0 mSdLazyCounter, 4444 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 5645 SdHoareTripleChecker+Invalid, 4486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:26,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 5645 Invalid, 4486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 4444 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-29 01:56:26,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2023-11-29 01:56:26,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 572. [2023-11-29 01:56:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 544 states have (on average 1.5422794117647058) internal successors, (839), 548 states have internal predecessors, (839), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:56:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 874 transitions. [2023-11-29 01:56:26,684 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 874 transitions. Word has length 118 [2023-11-29 01:56:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:26,685 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 874 transitions. [2023-11-29 01:56:26,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 19 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:26,685 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 874 transitions. [2023-11-29 01:56:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 01:56:26,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:26,686 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:56:26,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 01:56:26,686 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:26,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:26,687 INFO L85 PathProgramCache]: Analyzing trace with hash 200718761, now seen corresponding path program 1 times [2023-11-29 01:56:26,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:26,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639962040] [2023-11-29 01:56:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:26,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:28,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:56:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:56:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:28,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:28,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:56:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:56:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:56:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:28,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:56:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:56:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 01:56:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:56:30,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:30,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639962040] [2023-11-29 01:56:30,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639962040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:30,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:30,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 01:56:30,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068938848] [2023-11-29 01:56:30,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:30,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:56:30,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:30,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:56:30,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:56:30,183 INFO L87 Difference]: Start difference. First operand 572 states and 874 transitions. Second operand has 17 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:36,834 INFO L93 Difference]: Finished difference Result 721 states and 1080 transitions. [2023-11-29 01:56:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 01:56:36,835 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2023-11-29 01:56:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:36,837 INFO L225 Difference]: With dead ends: 721 [2023-11-29 01:56:36,837 INFO L226 Difference]: Without dead ends: 656 [2023-11-29 01:56:36,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:56:36,838 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 211 mSDsluCounter, 4643 mSDsCounter, 0 mSdLazyCounter, 3998 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 5111 SdHoareTripleChecker+Invalid, 4023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:36,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 5111 Invalid, 4023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3998 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-29 01:56:36,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-11-29 01:56:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 601. [2023-11-29 01:56:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 573 states have (on average 1.5410122164048865) internal successors, (883), 577 states have internal predecessors, (883), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:56:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 918 transitions. [2023-11-29 01:56:36,861 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 918 transitions. Word has length 118 [2023-11-29 01:56:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:36,861 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 918 transitions. [2023-11-29 01:56:36,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.375) internal successors, (70), 15 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 918 transitions. [2023-11-29 01:56:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 01:56:36,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:36,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:56:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 01:56:36,864 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:36,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash -554645663, now seen corresponding path program 1 times [2023-11-29 01:56:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:36,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109886962] [2023-11-29 01:56:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:36,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:56:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:37,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:56:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:37,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:56:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:37,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:56:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:56:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:37,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:56:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:37,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:56:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:38,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 01:56:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 01:56:38,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:38,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109886962] [2023-11-29 01:56:38,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109886962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:38,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:38,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 01:56:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355823046] [2023-11-29 01:56:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:38,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:56:38,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:38,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:56:38,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:56:38,504 INFO L87 Difference]: Start difference. First operand 601 states and 918 transitions. Second operand has 15 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:46,246 INFO L93 Difference]: Finished difference Result 1033 states and 1540 transitions. [2023-11-29 01:56:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:56:46,246 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2023-11-29 01:56:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:46,250 INFO L225 Difference]: With dead ends: 1033 [2023-11-29 01:56:46,250 INFO L226 Difference]: Without dead ends: 896 [2023-11-29 01:56:46,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:56:46,251 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 304 mSDsluCounter, 4408 mSDsCounter, 0 mSdLazyCounter, 3684 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 4878 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:46,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 4878 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3684 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-29 01:56:46,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-11-29 01:56:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 661. [2023-11-29 01:56:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 633 states have (on average 1.529225908372828) internal successors, (968), 637 states have internal predecessors, (968), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:56:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1003 transitions. [2023-11-29 01:56:46,275 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1003 transitions. Word has length 118 [2023-11-29 01:56:46,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:46,275 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 1003 transitions. [2023-11-29 01:56:46,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.5) internal successors, (77), 13 states have internal predecessors, (77), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:46,275 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1003 transitions. [2023-11-29 01:56:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 01:56:46,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:46,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:56:46,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 01:56:46,277 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:46,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:46,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1374605149, now seen corresponding path program 1 times [2023-11-29 01:56:46,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:46,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804921044] [2023-11-29 01:56:46,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:46,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:47,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:56:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:47,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:56:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:56:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:56:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:56:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:56:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:56:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:48,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 01:56:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:56:48,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:48,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804921044] [2023-11-29 01:56:48,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804921044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:48,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:48,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 01:56:48,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42092068] [2023-11-29 01:56:48,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:48,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:56:48,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:48,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:56:48,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:56:48,496 INFO L87 Difference]: Start difference. First operand 661 states and 1003 transitions. Second operand has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:52,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:52,317 INFO L93 Difference]: Finished difference Result 866 states and 1292 transitions. [2023-11-29 01:56:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:56:52,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2023-11-29 01:56:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:52,321 INFO L225 Difference]: With dead ends: 866 [2023-11-29 01:56:52,321 INFO L226 Difference]: Without dead ends: 736 [2023-11-29 01:56:52,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:56:52,322 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 276 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:52,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 3398 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 01:56:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2023-11-29 01:56:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 659. [2023-11-29 01:56:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 631 states have (on average 1.5309033280507132) internal successors, (966), 635 states have internal predecessors, (966), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:56:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1001 transitions. [2023-11-29 01:56:52,341 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1001 transitions. Word has length 118 [2023-11-29 01:56:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:52,341 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1001 transitions. [2023-11-29 01:56:52,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1001 transitions. [2023-11-29 01:56:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 01:56:52,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:52,343 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:56:52,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 01:56:52,343 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:52,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:52,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1069154228, now seen corresponding path program 1 times [2023-11-29 01:56:52,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:52,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159119129] [2023-11-29 01:56:52,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:52,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:53,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:56:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:56:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:53,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:56:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:53,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:56:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:56:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:56:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:56:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 01:56:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:56:54,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:54,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159119129] [2023-11-29 01:56:54,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159119129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:54,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:54,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:56:54,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041901309] [2023-11-29 01:56:54,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:54,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:56:54,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:56:54,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:56:54,113 INFO L87 Difference]: Start difference. First operand 659 states and 1001 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:56,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:56,020 INFO L93 Difference]: Finished difference Result 855 states and 1278 transitions. [2023-11-29 01:56:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:56:56,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2023-11-29 01:56:56,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:56,023 INFO L225 Difference]: With dead ends: 855 [2023-11-29 01:56:56,023 INFO L226 Difference]: Without dead ends: 703 [2023-11-29 01:56:56,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:56:56,024 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 208 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:56,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2653 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:56:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2023-11-29 01:56:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 662. [2023-11-29 01:56:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 634 states have (on average 1.5299684542586751) internal successors, (970), 638 states have internal predecessors, (970), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:56:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1005 transitions. [2023-11-29 01:56:56,040 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1005 transitions. Word has length 118 [2023-11-29 01:56:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:56:56,040 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1005 transitions. [2023-11-29 01:56:56,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1005 transitions. [2023-11-29 01:56:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:56:56,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:56:56,042 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:56:56,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 01:56:56,042 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:56:56,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:56:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash -776571028, now seen corresponding path program 1 times [2023-11-29 01:56:56,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:56:56,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849229146] [2023-11-29 01:56:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:56:56,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:56:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:56:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:56:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:57,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:56:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:57,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:56:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:56:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:57,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:56:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:57,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:56:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:57,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:56:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:58,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:56:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:56:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 01:56:58,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:56:58,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849229146] [2023-11-29 01:56:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849229146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:56:58,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:56:58,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 01:56:58,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439641252] [2023-11-29 01:56:58,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:56:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:56:58,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:56:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:56:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:56:58,394 INFO L87 Difference]: Start difference. First operand 662 states and 1005 transitions. Second operand has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:05,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:57:07,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:07,384 INFO L93 Difference]: Finished difference Result 945 states and 1419 transitions. [2023-11-29 01:57:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:57:07,385 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 119 [2023-11-29 01:57:07,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:07,389 INFO L225 Difference]: With dead ends: 945 [2023-11-29 01:57:07,389 INFO L226 Difference]: Without dead ends: 840 [2023-11-29 01:57:07,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:57:07,390 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 215 mSDsluCounter, 4531 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 5025 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:07,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 5025 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1790 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2023-11-29 01:57:07,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-11-29 01:57:07,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 726. [2023-11-29 01:57:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 698 states have (on average 1.524355300859599) internal successors, (1064), 702 states have internal predecessors, (1064), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:57:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1099 transitions. [2023-11-29 01:57:07,411 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1099 transitions. Word has length 119 [2023-11-29 01:57:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:07,411 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 1099 transitions. [2023-11-29 01:57:07,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1099 transitions. [2023-11-29 01:57:07,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:57:07,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:07,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:57:07,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 01:57:07,413 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:07,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1137231333, now seen corresponding path program 1 times [2023-11-29 01:57:07,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:07,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130321444] [2023-11-29 01:57:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:07,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:57:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:57:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:57:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:57:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:57:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:57:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:57:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:57:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 01:57:09,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:09,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130321444] [2023-11-29 01:57:09,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130321444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:09,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:09,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 01:57:09,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224369142] [2023-11-29 01:57:09,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:09,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:57:09,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:09,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:57:09,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:57:09,196 INFO L87 Difference]: Start difference. First operand 726 states and 1099 transitions. Second operand has 16 states, 15 states have (on average 5.2) internal successors, (78), 14 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:12,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:12,809 INFO L93 Difference]: Finished difference Result 1075 states and 1589 transitions. [2023-11-29 01:57:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 01:57:12,810 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 14 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 119 [2023-11-29 01:57:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:12,815 INFO L225 Difference]: With dead ends: 1075 [2023-11-29 01:57:12,815 INFO L226 Difference]: Without dead ends: 1016 [2023-11-29 01:57:12,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:57:12,816 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 252 mSDsluCounter, 3697 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:12,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 4143 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 01:57:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-11-29 01:57:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 736. [2023-11-29 01:57:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 708 states have (on average 1.5254237288135593) internal successors, (1080), 712 states have internal predecessors, (1080), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:57:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1115 transitions. [2023-11-29 01:57:12,847 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1115 transitions. Word has length 119 [2023-11-29 01:57:12,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:12,848 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1115 transitions. [2023-11-29 01:57:12,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 14 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1115 transitions. [2023-11-29 01:57:12,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:57:12,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:12,850 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:57:12,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 01:57:12,851 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:12,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:12,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1733460205, now seen corresponding path program 1 times [2023-11-29 01:57:12,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:12,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114120463] [2023-11-29 01:57:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:12,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:13,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:57:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:57:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:57:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:13,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:57:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:13,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:57:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:57:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:14,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:57:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:57:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 01:57:14,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114120463] [2023-11-29 01:57:14,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114120463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:14,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:14,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 01:57:14,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410236681] [2023-11-29 01:57:14,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:14,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:57:14,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:14,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:57:14,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:57:14,649 INFO L87 Difference]: Start difference. First operand 736 states and 1115 transitions. Second operand has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:17,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:17,815 INFO L93 Difference]: Finished difference Result 1158 states and 1727 transitions. [2023-11-29 01:57:17,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:57:17,815 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 119 [2023-11-29 01:57:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:17,818 INFO L225 Difference]: With dead ends: 1158 [2023-11-29 01:57:17,818 INFO L226 Difference]: Without dead ends: 891 [2023-11-29 01:57:17,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:57:17,819 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 206 mSDsluCounter, 3923 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 4393 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:17,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 4393 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 01:57:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2023-11-29 01:57:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 753. [2023-11-29 01:57:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 725 states have (on average 1.5213793103448277) internal successors, (1103), 729 states have internal predecessors, (1103), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:57:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1138 transitions. [2023-11-29 01:57:17,838 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1138 transitions. Word has length 119 [2023-11-29 01:57:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:17,838 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1138 transitions. [2023-11-29 01:57:17,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1138 transitions. [2023-11-29 01:57:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:57:17,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:17,839 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:57:17,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-29 01:57:17,840 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:17,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash -622345045, now seen corresponding path program 1 times [2023-11-29 01:57:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:17,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757974844] [2023-11-29 01:57:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:17,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:18,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:57:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:57:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:18,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:57:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:57:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:18,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:57:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:18,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:57:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:57:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:57:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 01:57:19,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:19,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757974844] [2023-11-29 01:57:19,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757974844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:19,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:19,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 01:57:19,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105256253] [2023-11-29 01:57:19,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:19,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:57:19,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:19,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:57:19,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:57:19,527 INFO L87 Difference]: Start difference. First operand 753 states and 1138 transitions. Second operand has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:22,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:57:27,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:57:33,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:57:41,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:57:45,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:57:46,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:46,522 INFO L93 Difference]: Finished difference Result 1054 states and 1563 transitions. [2023-11-29 01:57:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:57:46,522 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 119 [2023-11-29 01:57:46,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:46,525 INFO L225 Difference]: With dead ends: 1054 [2023-11-29 01:57:46,526 INFO L226 Difference]: Without dead ends: 905 [2023-11-29 01:57:46,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:57:46,527 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 89 mSDsluCounter, 3472 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 26 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:46,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3883 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1729 Invalid, 4 Unknown, 0 Unchecked, 26.4s Time] [2023-11-29 01:57:46,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-11-29 01:57:46,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 781. [2023-11-29 01:57:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 753 states have (on average 1.5205843293492696) internal successors, (1145), 757 states have internal predecessors, (1145), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:57:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1180 transitions. [2023-11-29 01:57:46,549 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1180 transitions. Word has length 119 [2023-11-29 01:57:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:46,549 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1180 transitions. [2023-11-29 01:57:46,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1180 transitions. [2023-11-29 01:57:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:57:46,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:46,550 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:57:46,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-29 01:57:46,551 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:46,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:46,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1075578193, now seen corresponding path program 1 times [2023-11-29 01:57:46,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:46,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534183788] [2023-11-29 01:57:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:57:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:57:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:57:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:57:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:57:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:57:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:57:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:57:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:57:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534183788] [2023-11-29 01:57:46,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534183788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:46,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:46,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:57:46,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105530921] [2023-11-29 01:57:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:46,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:57:46,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:46,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:57:46,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:57:46,876 INFO L87 Difference]: Start difference. First operand 781 states and 1180 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 01:57:47,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:47,762 INFO L93 Difference]: Finished difference Result 1065 states and 1581 transitions. [2023-11-29 01:57:47,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:57:47,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 119 [2023-11-29 01:57:47,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:47,766 INFO L225 Difference]: With dead ends: 1065 [2023-11-29 01:57:47,766 INFO L226 Difference]: Without dead ends: 937 [2023-11-29 01:57:47,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:57:47,767 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 157 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:47,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1182 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:57:47,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-11-29 01:57:47,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 846. [2023-11-29 01:57:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 818 states have (on average 1.5097799511002445) internal successors, (1235), 822 states have internal predecessors, (1235), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:57:47,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1270 transitions. [2023-11-29 01:57:47,785 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1270 transitions. Word has length 119 [2023-11-29 01:57:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:47,786 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1270 transitions. [2023-11-29 01:57:47,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 01:57:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1270 transitions. [2023-11-29 01:57:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:57:47,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:47,787 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:57:47,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-29 01:57:47,787 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:47,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:47,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1191654809, now seen corresponding path program 1 times [2023-11-29 01:57:47,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:47,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147777825] [2023-11-29 01:57:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:47,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:57:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:57:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:57:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:57:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:57:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:48,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:57:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:57:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:57:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:57:49,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:49,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147777825] [2023-11-29 01:57:49,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147777825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:49,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:49,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 01:57:49,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663107182] [2023-11-29 01:57:49,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:49,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:57:49,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:49,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:57:49,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:57:49,872 INFO L87 Difference]: Start difference. First operand 846 states and 1270 transitions. Second operand has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:54,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:54,004 INFO L93 Difference]: Finished difference Result 1130 states and 1673 transitions. [2023-11-29 01:57:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:57:54,005 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 119 [2023-11-29 01:57:54,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:54,008 INFO L225 Difference]: With dead ends: 1130 [2023-11-29 01:57:54,008 INFO L226 Difference]: Without dead ends: 917 [2023-11-29 01:57:54,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:57:54,010 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 478 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 3510 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:54,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 3510 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 01:57:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-11-29 01:57:54,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 858. [2023-11-29 01:57:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 830 states have (on average 1.5060240963855422) internal successors, (1250), 834 states have internal predecessors, (1250), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:57:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1285 transitions. [2023-11-29 01:57:54,034 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1285 transitions. Word has length 119 [2023-11-29 01:57:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:54,035 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1285 transitions. [2023-11-29 01:57:54,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1285 transitions. [2023-11-29 01:57:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:57:54,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:54,037 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:57:54,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-29 01:57:54,038 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:54,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:54,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1805042387, now seen corresponding path program 1 times [2023-11-29 01:57:54,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:54,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007037976] [2023-11-29 01:57:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:57:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:57:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:57:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:57:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:57:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:57:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:57:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:57:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:57:55,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:55,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007037976] [2023-11-29 01:57:55,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007037976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:55,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:55,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:57:55,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764577796] [2023-11-29 01:57:55,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:55,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:57:55,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:55,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:57:55,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:57:55,833 INFO L87 Difference]: Start difference. First operand 858 states and 1285 transitions. Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:57,744 INFO L93 Difference]: Finished difference Result 1126 states and 1665 transitions. [2023-11-29 01:57:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:57:57,745 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 119 [2023-11-29 01:57:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:57,747 INFO L225 Difference]: With dead ends: 1126 [2023-11-29 01:57:57,747 INFO L226 Difference]: Without dead ends: 903 [2023-11-29 01:57:57,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:57:57,748 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 185 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:57,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 3104 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:57:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2023-11-29 01:57:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 861. [2023-11-29 01:57:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 833 states have (on average 1.5054021608643458) internal successors, (1254), 837 states have internal predecessors, (1254), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:57:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1289 transitions. [2023-11-29 01:57:57,767 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1289 transitions. Word has length 119 [2023-11-29 01:57:57,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:57,767 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1289 transitions. [2023-11-29 01:57:57,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:57,767 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1289 transitions. [2023-11-29 01:57:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:57:57,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:57,769 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:57:57,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-29 01:57:57,769 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:57,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:57,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2120078393, now seen corresponding path program 1 times [2023-11-29 01:57:57,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:57,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204197239] [2023-11-29 01:57:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:57,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:58,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:58,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:57:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:57:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:58,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:57:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:57:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:57:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:58,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:57:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:57:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:58,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:57:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:59,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:57:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:57:59,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:59,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204197239] [2023-11-29 01:57:59,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204197239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:59,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:59,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:57:59,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825217945] [2023-11-29 01:57:59,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:59,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:57:59,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:59,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:57:59,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:57:59,741 INFO L87 Difference]: Start difference. First operand 861 states and 1289 transitions. Second operand has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:58:02,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:02,394 INFO L93 Difference]: Finished difference Result 1130 states and 1669 transitions. [2023-11-29 01:58:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:58:02,395 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 119 [2023-11-29 01:58:02,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:02,397 INFO L225 Difference]: With dead ends: 1130 [2023-11-29 01:58:02,397 INFO L226 Difference]: Without dead ends: 907 [2023-11-29 01:58:02,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:58:02,398 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 176 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:02,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 3385 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 01:58:02,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2023-11-29 01:58:02,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 864. [2023-11-29 01:58:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 836 states have (on average 1.5035885167464116) internal successors, (1257), 840 states have internal predecessors, (1257), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:58:02,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1292 transitions. [2023-11-29 01:58:02,421 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1292 transitions. Word has length 119 [2023-11-29 01:58:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:02,421 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1292 transitions. [2023-11-29 01:58:02,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:58:02,421 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1292 transitions. [2023-11-29 01:58:02,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:58:02,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:02,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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 01:58:02,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-29 01:58:02,424 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:02,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1693808645, now seen corresponding path program 1 times [2023-11-29 01:58:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:02,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515726676] [2023-11-29 01:58:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:02,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:03,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:58:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:58:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:03,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:58:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:03,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:58:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:58:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:03,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:58:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:58:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:03,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:58:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:03,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:58:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:58:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:58:04,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:04,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515726676] [2023-11-29 01:58:04,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515726676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:04,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:04,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:58:04,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283944133] [2023-11-29 01:58:04,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:04,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:58:04,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:04,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:58:04,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:58:04,377 INFO L87 Difference]: Start difference. First operand 864 states and 1292 transitions. Second operand has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:58:06,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:06,469 INFO L93 Difference]: Finished difference Result 1132 states and 1671 transitions. [2023-11-29 01:58:06,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:58:06,469 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 119 [2023-11-29 01:58:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:06,471 INFO L225 Difference]: With dead ends: 1132 [2023-11-29 01:58:06,471 INFO L226 Difference]: Without dead ends: 909 [2023-11-29 01:58:06,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:58:06,472 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 298 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:06,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 2598 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:58:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-11-29 01:58:06,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 864. [2023-11-29 01:58:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 836 states have (on average 1.5035885167464116) internal successors, (1257), 840 states have internal predecessors, (1257), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:58:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1292 transitions. [2023-11-29 01:58:06,498 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1292 transitions. Word has length 119 [2023-11-29 01:58:06,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:06,498 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1292 transitions. [2023-11-29 01:58:06,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:58:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1292 transitions. [2023-11-29 01:58:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 01:58:06,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:06,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-29 01:58:06,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-29 01:58:06,501 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:06,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:06,502 INFO L85 PathProgramCache]: Analyzing trace with hash 957602856, now seen corresponding path program 1 times [2023-11-29 01:58:06,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:06,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816036682] [2023-11-29 01:58:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:06,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:07,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:58:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:58:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:58:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:58:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:07,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:58:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:58:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:07,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:58:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:58:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:07,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:58:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 01:58:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 01:58:08,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:08,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816036682] [2023-11-29 01:58:08,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816036682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:08,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:08,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-11-29 01:58:08,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114005948] [2023-11-29 01:58:08,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:08,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:58:08,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:08,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:58:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:58:08,902 INFO L87 Difference]: Start difference. First operand 864 states and 1292 transitions. Second operand has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:58:19,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:58:20,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:20,895 INFO L93 Difference]: Finished difference Result 1343 states and 1958 transitions. [2023-11-29 01:58:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:58:20,895 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2023-11-29 01:58:20,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:20,898 INFO L225 Difference]: With dead ends: 1343 [2023-11-29 01:58:20,898 INFO L226 Difference]: Without dead ends: 1242 [2023-11-29 01:58:20,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:58:20,899 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 295 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 4263 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 5045 SdHoareTripleChecker+Invalid, 4350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:20,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 5045 Invalid, 4350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4263 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2023-11-29 01:58:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2023-11-29 01:58:20,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 966. [2023-11-29 01:58:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 938 states have (on average 1.492537313432836) internal successors, (1400), 942 states have internal predecessors, (1400), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:58:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1435 transitions. [2023-11-29 01:58:20,919 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1435 transitions. Word has length 120 [2023-11-29 01:58:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:20,919 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 1435 transitions. [2023-11-29 01:58:20,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:58:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1435 transitions. [2023-11-29 01:58:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 01:58:20,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:20,920 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-29 01:58:20,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-29 01:58:20,921 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:20,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash 563236070, now seen corresponding path program 1 times [2023-11-29 01:58:20,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:20,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066277654] [2023-11-29 01:58:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:20,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:58:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:58:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:58:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:58:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:58:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:58:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:58:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:58:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:58:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 01:58:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 01:58:22,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:22,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066277654] [2023-11-29 01:58:22,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066277654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:22,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:22,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 01:58:22,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326454300] [2023-11-29 01:58:22,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:22,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:58:22,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:58:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:58:22,535 INFO L87 Difference]: Start difference. First operand 966 states and 1435 transitions. Second operand has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:58:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:26,362 INFO L93 Difference]: Finished difference Result 1252 states and 1833 transitions. [2023-11-29 01:58:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:58:26,362 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2023-11-29 01:58:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:26,365 INFO L225 Difference]: With dead ends: 1252 [2023-11-29 01:58:26,365 INFO L226 Difference]: Without dead ends: 1169 [2023-11-29 01:58:26,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:58:26,366 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 235 mSDsluCounter, 3593 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 4091 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:26,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 4091 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 01:58:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2023-11-29 01:58:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 994. [2023-11-29 01:58:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 966 states have (on average 1.4865424430641823) internal successors, (1436), 970 states have internal predecessors, (1436), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 01:58:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1471 transitions. [2023-11-29 01:58:26,404 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1471 transitions. Word has length 120 [2023-11-29 01:58:26,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:26,404 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1471 transitions. [2023-11-29 01:58:26,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:58:26,405 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1471 transitions. [2023-11-29 01:58:26,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 01:58:26,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:26,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-29 01:58:26,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-29 01:58:26,408 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:26,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1938262164, now seen corresponding path program 1 times [2023-11-29 01:58:26,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:26,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335147938] [2023-11-29 01:58:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:26,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:27,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:58:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:58:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:27,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 01:58:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:58:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:27,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:58:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:27,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:58:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:27,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 01:58:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:27,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:58:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:27,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:00:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:00:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 02:00:59,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:59,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335147938] [2023-11-29 02:00:59,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335147938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:59,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:59,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 02:00:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818235938] [2023-11-29 02:00:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:00:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:00:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:00:59,555 INFO L87 Difference]: Start difference. First operand 994 states and 1471 transitions. Second operand has 13 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:01,386 INFO L93 Difference]: Finished difference Result 1656 states and 2454 transitions. [2023-11-29 02:01:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:01:01,386 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2023-11-29 02:01:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:01,389 INFO L225 Difference]: With dead ends: 1656 [2023-11-29 02:01:01,390 INFO L226 Difference]: Without dead ends: 1613 [2023-11-29 02:01:01,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:01:01,390 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 541 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 4398 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:01,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 4398 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 02:01:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2023-11-29 02:01:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 994. [2023-11-29 02:01:01,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 966 states have (on average 1.4865424430641823) internal successors, (1436), 970 states have internal predecessors, (1436), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:01:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1471 transitions. [2023-11-29 02:01:01,415 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1471 transitions. Word has length 120 [2023-11-29 02:01:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:01,415 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1471 transitions. [2023-11-29 02:01:01,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.583333333333333) internal successors, (79), 11 states have internal predecessors, (79), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1471 transitions. [2023-11-29 02:01:01,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 02:01:01,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:01,417 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-29 02:01:01,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-29 02:01:01,417 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:01,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash 146041640, now seen corresponding path program 1 times [2023-11-29 02:01:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:01,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261776680] [2023-11-29 02:01:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:01,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:02,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:01:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:01:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:01:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:02,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:01:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:01:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:02,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:01:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:02,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:01:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:02,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:01:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:01:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:01:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:01:03,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:03,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261776680] [2023-11-29 02:01:03,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261776680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:03,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:01:03,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 02:01:03,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741872474] [2023-11-29 02:01:03,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:03,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 02:01:03,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:03,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 02:01:03,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:01:03,518 INFO L87 Difference]: Start difference. First operand 994 states and 1471 transitions. Second operand has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:06,506 INFO L93 Difference]: Finished difference Result 1343 states and 1962 transitions. [2023-11-29 02:01:06,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:01:06,506 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2023-11-29 02:01:06,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:06,508 INFO L225 Difference]: With dead ends: 1343 [2023-11-29 02:01:06,508 INFO L226 Difference]: Without dead ends: 1067 [2023-11-29 02:01:06,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:01:06,509 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 670 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:06,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 3093 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 02:01:06,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2023-11-29 02:01:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 993. [2023-11-29 02:01:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 965 states have (on average 1.4870466321243523) internal successors, (1435), 969 states have internal predecessors, (1435), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:01:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1470 transitions. [2023-11-29 02:01:06,534 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1470 transitions. Word has length 120 [2023-11-29 02:01:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:06,534 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1470 transitions. [2023-11-29 02:01:06,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1470 transitions. [2023-11-29 02:01:06,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 02:01:06,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:06,536 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-29 02:01:06,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-11-29 02:01:06,537 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:06,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash -599290641, now seen corresponding path program 1 times [2023-11-29 02:01:06,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:06,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439391728] [2023-11-29 02:01:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:06,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:01:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:01:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:01:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:01:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:01:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:01:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:01:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:01:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:01:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:08,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:01:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:01:08,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:08,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439391728] [2023-11-29 02:01:08,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439391728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:08,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:01:08,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:01:08,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805000437] [2023-11-29 02:01:08,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:08,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:01:08,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:08,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:01:08,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:01:08,109 INFO L87 Difference]: Start difference. First operand 993 states and 1470 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:10,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:10,352 INFO L93 Difference]: Finished difference Result 1324 states and 1936 transitions. [2023-11-29 02:01:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:01:10,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2023-11-29 02:01:10,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:10,356 INFO L225 Difference]: With dead ends: 1324 [2023-11-29 02:01:10,356 INFO L226 Difference]: Without dead ends: 1037 [2023-11-29 02:01:10,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:01:10,357 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 178 mSDsluCounter, 2883 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:10,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 3364 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 02:01:10,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-11-29 02:01:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 995. [2023-11-29 02:01:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 967 states have (on average 1.4870734229576008) internal successors, (1438), 971 states have internal predecessors, (1438), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:01:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1473 transitions. [2023-11-29 02:01:10,374 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1473 transitions. Word has length 120 [2023-11-29 02:01:10,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:10,374 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1473 transitions. [2023-11-29 02:01:10,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1473 transitions. [2023-11-29 02:01:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 02:01:10,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:10,376 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-29 02:01:10,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-11-29 02:01:10,376 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:10,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1273618252, now seen corresponding path program 1 times [2023-11-29 02:01:10,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:10,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852640350] [2023-11-29 02:01:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:10,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:01:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:01:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:01:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:01:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:11,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:01:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:01:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:11,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:01:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:01:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:01:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:01:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:01:12,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:12,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852640350] [2023-11-29 02:01:12,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852640350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:12,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:01:12,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 02:01:12,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90218069] [2023-11-29 02:01:12,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:12,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:01:12,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:12,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:01:12,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:01:12,660 INFO L87 Difference]: Start difference. First operand 995 states and 1473 transitions. Second operand has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:16,898 INFO L93 Difference]: Finished difference Result 1354 states and 1976 transitions. [2023-11-29 02:01:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:01:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2023-11-29 02:01:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:16,900 INFO L225 Difference]: With dead ends: 1354 [2023-11-29 02:01:16,900 INFO L226 Difference]: Without dead ends: 1126 [2023-11-29 02:01:16,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:01:16,901 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 592 mSDsluCounter, 3536 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 4020 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:16,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 4020 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 02:01:16,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2023-11-29 02:01:16,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1006. [2023-11-29 02:01:16,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 978 states have (on average 1.4867075664621676) internal successors, (1454), 982 states have internal predecessors, (1454), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:01:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1489 transitions. [2023-11-29 02:01:16,918 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1489 transitions. Word has length 120 [2023-11-29 02:01:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:16,918 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1489 transitions. [2023-11-29 02:01:16,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1489 transitions. [2023-11-29 02:01:16,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 02:01:16,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:16,920 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1] [2023-11-29 02:01:16,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-11-29 02:01:16,920 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:16,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:16,921 INFO L85 PathProgramCache]: Analyzing trace with hash 992762934, now seen corresponding path program 1 times [2023-11-29 02:01:16,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:16,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938979468] [2023-11-29 02:01:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:16,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:01:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:17,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:01:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:17,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:01:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:17,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:01:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:01:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:17,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:01:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:17,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:01:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:17,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:01:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:01:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:01:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:01:19,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:19,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938979468] [2023-11-29 02:01:19,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938979468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:19,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:01:19,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 02:01:19,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789427650] [2023-11-29 02:01:19,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:19,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:01:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:01:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:01:19,087 INFO L87 Difference]: Start difference. First operand 1006 states and 1489 transitions. Second operand has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:22,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:22,735 INFO L93 Difference]: Finished difference Result 1343 states and 1963 transitions. [2023-11-29 02:01:22,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:01:22,736 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2023-11-29 02:01:22,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:22,738 INFO L225 Difference]: With dead ends: 1343 [2023-11-29 02:01:22,738 INFO L226 Difference]: Without dead ends: 1090 [2023-11-29 02:01:22,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:01:22,739 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 198 mSDsluCounter, 4013 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 4490 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:22,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 4490 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2599 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 02:01:22,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2023-11-29 02:01:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1006. [2023-11-29 02:01:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 978 states have (on average 1.4867075664621676) internal successors, (1454), 982 states have internal predecessors, (1454), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:01:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1489 transitions. [2023-11-29 02:01:22,759 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1489 transitions. Word has length 120 [2023-11-29 02:01:22,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:22,759 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1489 transitions. [2023-11-29 02:01:22,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1489 transitions. [2023-11-29 02:01:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:01:22,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:22,761 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-11-29 02:01:22,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-11-29 02:01:22,761 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:22,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:22,761 INFO L85 PathProgramCache]: Analyzing trace with hash -648192074, now seen corresponding path program 1 times [2023-11-29 02:01:22,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:22,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351754795] [2023-11-29 02:01:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:01:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:01:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:23,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:01:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:23,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:01:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:23,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:01:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:01:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:23,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:01:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:23,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:01:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:23,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:01:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 02:01:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 02:01:25,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:25,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351754795] [2023-11-29 02:01:25,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351754795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:25,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:01:25,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 02:01:25,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670215360] [2023-11-29 02:01:25,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:25,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 02:01:25,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:25,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 02:01:25,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:01:25,445 INFO L87 Difference]: Start difference. First operand 1006 states and 1489 transitions. Second operand has 20 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 18 states have internal predecessors, (80), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:01:33,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 02:01:42,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 02:01:47,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 02:01:57,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 02:02:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:02:00,414 INFO L93 Difference]: Finished difference Result 1626 states and 2362 transitions. [2023-11-29 02:02:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 02:02:00,415 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 18 states have internal predecessors, (80), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 121 [2023-11-29 02:02:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:02:00,418 INFO L225 Difference]: With dead ends: 1626 [2023-11-29 02:02:00,418 INFO L226 Difference]: Without dead ends: 1361 [2023-11-29 02:02:00,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=140, Invalid=982, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 02:02:00,419 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 303 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 4019 mSolverCounterSat, 59 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 5681 SdHoareTripleChecker+Invalid, 4082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 4019 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:02:00,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 5681 Invalid, 4082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 4019 Invalid, 4 Unknown, 0 Unchecked, 29.0s Time] [2023-11-29 02:02:00,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2023-11-29 02:02:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1034. [2023-11-29 02:02:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1006 states have (on average 1.4831013916500995) internal successors, (1492), 1010 states have internal predecessors, (1492), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:02:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1527 transitions. [2023-11-29 02:02:00,437 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1527 transitions. Word has length 121 [2023-11-29 02:02:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:02:00,438 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1527 transitions. [2023-11-29 02:02:00,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 18 states have internal predecessors, (80), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:02:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1527 transitions. [2023-11-29 02:02:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:02:00,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:02:00,439 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-11-29 02:02:00,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-11-29 02:02:00,439 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:02:00,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:02:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash 738011320, now seen corresponding path program 1 times [2023-11-29 02:02:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:02:00,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734790283] [2023-11-29 02:02:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:02:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:02:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:02:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:02:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:02:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:02:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:02:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:02:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:02:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:02:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:02:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:03:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:07,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 02:03:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 02:03:07,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:07,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734790283] [2023-11-29 02:03:07,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734790283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:07,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:07,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 02:03:07,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964390517] [2023-11-29 02:03:07,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:07,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:03:07,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:03:07,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:03:07,472 INFO L87 Difference]: Start difference. First operand 1034 states and 1527 transitions. Second operand has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:10,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:10,259 INFO L93 Difference]: Finished difference Result 1746 states and 2578 transitions. [2023-11-29 02:03:10,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:03:10,260 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 121 [2023-11-29 02:03:10,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:10,263 INFO L225 Difference]: With dead ends: 1746 [2023-11-29 02:03:10,263 INFO L226 Difference]: Without dead ends: 1703 [2023-11-29 02:03:10,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:03:10,264 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 505 mSDsluCounter, 3868 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 4342 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:10,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 4342 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 02:03:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2023-11-29 02:03:10,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1046. [2023-11-29 02:03:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1018 states have (on average 1.4813359528487229) internal successors, (1508), 1022 states have internal predecessors, (1508), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:03:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1543 transitions. [2023-11-29 02:03:10,283 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1543 transitions. Word has length 121 [2023-11-29 02:03:10,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:10,283 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1543 transitions. [2023-11-29 02:03:10,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1543 transitions. [2023-11-29 02:03:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:03:10,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:10,285 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-11-29 02:03:10,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-11-29 02:03:10,285 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:10,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:10,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1373838196, now seen corresponding path program 1 times [2023-11-29 02:03:10,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:10,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500747701] [2023-11-29 02:03:10,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:10,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:03:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:03:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:03:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:11,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:03:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:03:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:11,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:03:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:11,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:03:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 02:03:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:03:12,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:12,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500747701] [2023-11-29 02:03:12,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500747701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:12,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:12,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 02:03:12,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638464836] [2023-11-29 02:03:12,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:12,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 02:03:12,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:12,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 02:03:12,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:03:12,277 INFO L87 Difference]: Start difference. First operand 1046 states and 1543 transitions. Second operand has 14 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:18,264 INFO L93 Difference]: Finished difference Result 1406 states and 2048 transitions. [2023-11-29 02:03:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:03:18,264 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 121 [2023-11-29 02:03:18,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:18,266 INFO L225 Difference]: With dead ends: 1406 [2023-11-29 02:03:18,266 INFO L226 Difference]: Without dead ends: 1117 [2023-11-29 02:03:18,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:03:18,267 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 555 mSDsluCounter, 3496 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:18,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 3980 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-29 02:03:18,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2023-11-29 02:03:18,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1044. [2023-11-29 02:03:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1016 states have (on average 1.4822834645669292) internal successors, (1506), 1020 states have internal predecessors, (1506), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:03:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1541 transitions. [2023-11-29 02:03:18,286 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1541 transitions. Word has length 121 [2023-11-29 02:03:18,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:18,286 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1541 transitions. [2023-11-29 02:03:18,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1541 transitions. [2023-11-29 02:03:18,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:03:18,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:18,287 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-11-29 02:03:18,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-11-29 02:03:18,287 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:18,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1566232658, now seen corresponding path program 1 times [2023-11-29 02:03:18,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:18,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27509804] [2023-11-29 02:03:18,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:18,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:03:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:03:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:03:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:03:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:03:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:03:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:03:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 02:03:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:03:19,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:19,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27509804] [2023-11-29 02:03:19,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27509804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:19,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:19,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:03:19,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35294119] [2023-11-29 02:03:19,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:19,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:03:19,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:19,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:03:19,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:03:19,870 INFO L87 Difference]: Start difference. First operand 1044 states and 1541 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:22,405 INFO L93 Difference]: Finished difference Result 1388 states and 2024 transitions. [2023-11-29 02:03:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:03:22,405 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 121 [2023-11-29 02:03:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:22,408 INFO L225 Difference]: With dead ends: 1388 [2023-11-29 02:03:22,408 INFO L226 Difference]: Without dead ends: 1087 [2023-11-29 02:03:22,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:03:22,409 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 208 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:22,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2641 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 02:03:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-11-29 02:03:22,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1047. [2023-11-29 02:03:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1019 states have (on average 1.4818449460255152) internal successors, (1510), 1023 states have internal predecessors, (1510), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:03:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1545 transitions. [2023-11-29 02:03:22,427 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1545 transitions. Word has length 121 [2023-11-29 02:03:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:22,427 INFO L495 AbstractCegarLoop]: Abstraction has 1047 states and 1545 transitions. [2023-11-29 02:03:22,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1545 transitions. [2023-11-29 02:03:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:03:22,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:22,430 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-11-29 02:03:22,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-11-29 02:03:22,430 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:22,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:22,430 INFO L85 PathProgramCache]: Analyzing trace with hash 341843924, now seen corresponding path program 1 times [2023-11-29 02:03:22,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:22,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841189149] [2023-11-29 02:03:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:22,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:23,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:03:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:23,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:03:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:23,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:23,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:03:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:23,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:03:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:23,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:03:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:23,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:03:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:23,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:03:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 02:03:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:03:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841189149] [2023-11-29 02:03:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841189149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:25,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-29 02:03:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342095551] [2023-11-29 02:03:25,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:25,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 02:03:25,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 02:03:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:03:25,232 INFO L87 Difference]: Start difference. First operand 1047 states and 1545 transitions. Second operand has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:34,529 INFO L93 Difference]: Finished difference Result 1364 states and 1979 transitions. [2023-11-29 02:03:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 02:03:34,529 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 121 [2023-11-29 02:03:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:34,531 INFO L225 Difference]: With dead ends: 1364 [2023-11-29 02:03:34,531 INFO L226 Difference]: Without dead ends: 1204 [2023-11-29 02:03:34,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-11-29 02:03:34,532 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 408 mSDsluCounter, 4246 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:34,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 4717 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3656 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-29 02:03:34,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2023-11-29 02:03:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1056. [2023-11-29 02:03:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1028 states have (on average 1.4815175097276265) internal successors, (1523), 1032 states have internal predecessors, (1523), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:03:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1558 transitions. [2023-11-29 02:03:34,550 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1558 transitions. Word has length 121 [2023-11-29 02:03:34,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:34,550 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1558 transitions. [2023-11-29 02:03:34,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1558 transitions. [2023-11-29 02:03:34,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:03:34,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:34,552 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-11-29 02:03:34,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-11-29 02:03:34,552 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:34,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1147208857, now seen corresponding path program 1 times [2023-11-29 02:03:34,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:34,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633995307] [2023-11-29 02:03:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:34,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:03:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:03:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:03:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:03:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:03:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:03:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:03:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 02:03:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 02:03:35,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:35,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633995307] [2023-11-29 02:03:35,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633995307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:35,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:35,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 02:03:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526006540] [2023-11-29 02:03:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:35,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:03:35,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:03:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:03:35,895 INFO L87 Difference]: Start difference. First operand 1056 states and 1558 transitions. Second operand has 13 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:39,386 INFO L93 Difference]: Finished difference Result 1766 states and 2606 transitions. [2023-11-29 02:03:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:03:39,386 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 122 [2023-11-29 02:03:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:39,389 INFO L225 Difference]: With dead ends: 1766 [2023-11-29 02:03:39,389 INFO L226 Difference]: Without dead ends: 1723 [2023-11-29 02:03:39,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:03:39,390 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 492 mSDsluCounter, 3848 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:39,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 4322 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 02:03:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2023-11-29 02:03:39,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1055. [2023-11-29 02:03:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 1027 states have (on average 1.4819863680623175) internal successors, (1522), 1031 states have internal predecessors, (1522), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:03:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1557 transitions. [2023-11-29 02:03:39,411 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1557 transitions. Word has length 122 [2023-11-29 02:03:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:39,412 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1557 transitions. [2023-11-29 02:03:39,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.75) internal successors, (81), 11 states have internal predecessors, (81), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1557 transitions. [2023-11-29 02:03:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:03:39,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:39,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-11-29 02:03:39,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-11-29 02:03:39,414 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:39,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:39,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1284269651, now seen corresponding path program 1 times [2023-11-29 02:03:39,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:39,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550564735] [2023-11-29 02:03:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:39,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:03:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:03:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:03:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:40,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:03:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:40,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:03:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:03:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:40,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:03:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:41,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 02:03:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:03:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:41,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550564735] [2023-11-29 02:03:41,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550564735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:41,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:41,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 02:03:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821967204] [2023-11-29 02:03:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:41,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 02:03:41,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:41,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 02:03:41,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:03:41,436 INFO L87 Difference]: Start difference. First operand 1055 states and 1557 transitions. Second operand has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:47,492 INFO L93 Difference]: Finished difference Result 1414 states and 2060 transitions. [2023-11-29 02:03:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:03:47,492 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 122 [2023-11-29 02:03:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:47,496 INFO L225 Difference]: With dead ends: 1414 [2023-11-29 02:03:47,496 INFO L226 Difference]: Without dead ends: 1125 [2023-11-29 02:03:47,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:03:47,497 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 498 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:47,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 3815 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-29 02:03:47,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2023-11-29 02:03:47,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1053. [2023-11-29 02:03:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1025 states have (on average 1.4829268292682927) internal successors, (1520), 1029 states have internal predecessors, (1520), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:03:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1555 transitions. [2023-11-29 02:03:47,516 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1555 transitions. Word has length 122 [2023-11-29 02:03:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:47,516 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1555 transitions. [2023-11-29 02:03:47,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1555 transitions. [2023-11-29 02:03:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:03:47,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:47,518 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-11-29 02:03:47,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-11-29 02:03:47,519 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:47,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash -923726294, now seen corresponding path program 1 times [2023-11-29 02:03:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:47,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466514926] [2023-11-29 02:03:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:48,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:48,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:03:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:48,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:03:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:48,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:48,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:03:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:48,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:03:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:03:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:48,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:03:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:48,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:03:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 02:03:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:03:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:49,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466514926] [2023-11-29 02:03:49,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466514926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:49,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:49,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:03:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432725520] [2023-11-29 02:03:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:49,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:03:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:49,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:03:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:03:49,114 INFO L87 Difference]: Start difference. First operand 1053 states and 1555 transitions. Second operand has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:53,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:53,029 INFO L93 Difference]: Finished difference Result 1396 states and 2036 transitions. [2023-11-29 02:03:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:03:53,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 122 [2023-11-29 02:03:53,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:53,032 INFO L225 Difference]: With dead ends: 1396 [2023-11-29 02:03:53,032 INFO L226 Difference]: Without dead ends: 1095 [2023-11-29 02:03:53,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:03:53,033 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 301 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:53,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 2526 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 02:03:53,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2023-11-29 02:03:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1056. [2023-11-29 02:03:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1028 states have (on average 1.482490272373541) internal successors, (1524), 1032 states have internal predecessors, (1524), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:03:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1559 transitions. [2023-11-29 02:03:53,051 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1559 transitions. Word has length 122 [2023-11-29 02:03:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:03:53,051 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1559 transitions. [2023-11-29 02:03:53,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:03:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1559 transitions. [2023-11-29 02:03:53,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:03:53,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:03:53,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-11-29 02:03:53,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-11-29 02:03:53,054 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:03:53,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:03:53,055 INFO L85 PathProgramCache]: Analyzing trace with hash -991485821, now seen corresponding path program 1 times [2023-11-29 02:03:53,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:03:53,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514456427] [2023-11-29 02:03:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:03:53,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:03:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:54,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:03:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:03:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:03:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:54,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:03:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:54,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:03:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:03:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:03:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:03:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:56,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 02:03:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:03:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:03:56,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:03:56,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514456427] [2023-11-29 02:03:56,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514456427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:03:56,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:03:56,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-29 02:03:56,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131562079] [2023-11-29 02:03:56,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:03:56,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 02:03:56,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:03:56,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 02:03:56,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-11-29 02:03:56,591 INFO L87 Difference]: Start difference. First operand 1056 states and 1559 transitions. Second operand has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 20 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:09,067 INFO L93 Difference]: Finished difference Result 1347 states and 1951 transitions. [2023-11-29 02:04:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 02:04:09,067 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 20 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 122 [2023-11-29 02:04:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:09,071 INFO L225 Difference]: With dead ends: 1347 [2023-11-29 02:04:09,071 INFO L226 Difference]: Without dead ends: 1250 [2023-11-29 02:04:09,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 02:04:09,072 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 577 mSDsluCounter, 5213 mSDsCounter, 0 mSdLazyCounter, 4597 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 5665 SdHoareTripleChecker+Invalid, 4639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:09,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 5665 Invalid, 4639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 4597 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-11-29 02:04:09,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2023-11-29 02:04:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1067. [2023-11-29 02:04:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1039 states have (on average 1.4812319538017324) internal successors, (1539), 1043 states have internal predecessors, (1539), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:04:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1574 transitions. [2023-11-29 02:04:09,101 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1574 transitions. Word has length 122 [2023-11-29 02:04:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:09,101 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1574 transitions. [2023-11-29 02:04:09,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 20 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1574 transitions. [2023-11-29 02:04:09,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:04:09,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:09,103 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-11-29 02:04:09,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-11-29 02:04:09,104 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:09,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash -786407299, now seen corresponding path program 1 times [2023-11-29 02:04:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:09,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411256533] [2023-11-29 02:04:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:04:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:04:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:04:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:04:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:04:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:04:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:04:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 02:04:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:04:10,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:10,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411256533] [2023-11-29 02:04:10,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411256533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:10,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:10,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:04:10,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143232232] [2023-11-29 02:04:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:10,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:04:10,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:10,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:04:10,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:04:10,768 INFO L87 Difference]: Start difference. First operand 1067 states and 1574 transitions. Second operand has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:13,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:13,822 INFO L93 Difference]: Finished difference Result 1411 states and 2055 transitions. [2023-11-29 02:04:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:04:13,823 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 122 [2023-11-29 02:04:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:13,826 INFO L225 Difference]: With dead ends: 1411 [2023-11-29 02:04:13,826 INFO L226 Difference]: Without dead ends: 1110 [2023-11-29 02:04:13,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:04:13,827 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 224 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:13,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 3008 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 02:04:13,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2023-11-29 02:04:13,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1070. [2023-11-29 02:04:13,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1042 states have (on average 1.4798464491362764) internal successors, (1542), 1046 states have internal predecessors, (1542), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:04:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1577 transitions. [2023-11-29 02:04:13,854 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1577 transitions. Word has length 122 [2023-11-29 02:04:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:13,854 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1577 transitions. [2023-11-29 02:04:13,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1577 transitions. [2023-11-29 02:04:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:04:13,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:13,856 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-11-29 02:04:13,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-11-29 02:04:13,856 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:13,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1267487557, now seen corresponding path program 1 times [2023-11-29 02:04:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209685691] [2023-11-29 02:04:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:04:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:04:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:04:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:04:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:14,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:04:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:04:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:14,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:04:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 02:04:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:04:15,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:15,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209685691] [2023-11-29 02:04:15,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209685691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:15,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:15,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 02:04:15,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029577220] [2023-11-29 02:04:15,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:15,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:04:15,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:15,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:04:15,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:04:15,640 INFO L87 Difference]: Start difference. First operand 1070 states and 1577 transitions. Second operand has 11 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:19,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:19,560 INFO L93 Difference]: Finished difference Result 1413 states and 2057 transitions. [2023-11-29 02:04:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:04:19,561 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 122 [2023-11-29 02:04:19,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:19,563 INFO L225 Difference]: With dead ends: 1413 [2023-11-29 02:04:19,563 INFO L226 Difference]: Without dead ends: 1112 [2023-11-29 02:04:19,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:04:19,564 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 274 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:19,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 3033 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 02:04:19,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2023-11-29 02:04:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1070. [2023-11-29 02:04:19,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1042 states have (on average 1.4798464491362764) internal successors, (1542), 1046 states have internal predecessors, (1542), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:04:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1577 transitions. [2023-11-29 02:04:19,582 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1577 transitions. Word has length 122 [2023-11-29 02:04:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:19,582 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1577 transitions. [2023-11-29 02:04:19,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1577 transitions. [2023-11-29 02:04:19,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 02:04:19,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:19,584 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-29 02:04:19,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-11-29 02:04:19,585 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:19,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash -90301347, now seen corresponding path program 1 times [2023-11-29 02:04:19,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:19,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787361480] [2023-11-29 02:04:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:19,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:20,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:04:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:04:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:20,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:04:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:04:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:04:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:04:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:04:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:04:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 02:04:22,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787361480] [2023-11-29 02:04:22,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787361480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:22,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:22,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 02:04:22,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74411845] [2023-11-29 02:04:22,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:22,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:04:22,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:22,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:04:22,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:04:22,276 INFO L87 Difference]: Start difference. First operand 1070 states and 1577 transitions. Second operand has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:25,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:25,852 INFO L93 Difference]: Finished difference Result 1778 states and 2620 transitions. [2023-11-29 02:04:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:04:25,852 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2023-11-29 02:04:25,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:25,856 INFO L225 Difference]: With dead ends: 1778 [2023-11-29 02:04:25,856 INFO L226 Difference]: Without dead ends: 1735 [2023-11-29 02:04:25,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:04:25,857 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 491 mSDsluCounter, 3810 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 4284 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:25,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 4284 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 02:04:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2023-11-29 02:04:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1084. [2023-11-29 02:04:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1056 states have (on average 1.4763257575757576) internal successors, (1559), 1060 states have internal predecessors, (1559), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:04:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1594 transitions. [2023-11-29 02:04:25,877 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1594 transitions. Word has length 123 [2023-11-29 02:04:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:25,877 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1594 transitions. [2023-11-29 02:04:25,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 11 states have internal predecessors, (82), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1594 transitions. [2023-11-29 02:04:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 02:04:25,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:25,879 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-29 02:04:25,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-11-29 02:04:25,880 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:25,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1453558449, now seen corresponding path program 1 times [2023-11-29 02:04:25,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290405218] [2023-11-29 02:04:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:04:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:04:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:04:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:04:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:04:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:04:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:04:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:04:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:04:26,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:26,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290405218] [2023-11-29 02:04:26,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290405218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:26,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:26,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:04:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963587733] [2023-11-29 02:04:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:26,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:04:26,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:04:26,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:04:26,944 INFO L87 Difference]: Start difference. First operand 1084 states and 1594 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:31,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:31,177 INFO L93 Difference]: Finished difference Result 1552 states and 2258 transitions. [2023-11-29 02:04:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:04:31,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2023-11-29 02:04:31,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:31,180 INFO L225 Difference]: With dead ends: 1552 [2023-11-29 02:04:31,180 INFO L226 Difference]: Without dead ends: 1251 [2023-11-29 02:04:31,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:04:31,181 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 367 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:31,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 2944 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 02:04:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-11-29 02:04:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1092. [2023-11-29 02:04:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1064 states have (on average 1.4755639097744362) internal successors, (1570), 1068 states have internal predecessors, (1570), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:04:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1605 transitions. [2023-11-29 02:04:31,199 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1605 transitions. Word has length 123 [2023-11-29 02:04:31,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:31,199 INFO L495 AbstractCegarLoop]: Abstraction has 1092 states and 1605 transitions. [2023-11-29 02:04:31,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:31,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1605 transitions. [2023-11-29 02:04:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 02:04:31,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:31,201 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-29 02:04:31,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-11-29 02:04:31,201 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:31,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1927927671, now seen corresponding path program 1 times [2023-11-29 02:04:31,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:31,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016691187] [2023-11-29 02:04:31,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:31,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:04:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:04:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:04:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:04:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:04:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:04:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:04:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:04:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:04:32,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:32,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016691187] [2023-11-29 02:04:32,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016691187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:32,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:32,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:04:32,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615794060] [2023-11-29 02:04:32,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:32,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:04:32,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:32,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:04:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:04:32,784 INFO L87 Difference]: Start difference. First operand 1092 states and 1605 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:37,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:37,121 INFO L93 Difference]: Finished difference Result 1439 states and 2090 transitions. [2023-11-29 02:04:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:04:37,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2023-11-29 02:04:37,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:37,124 INFO L225 Difference]: With dead ends: 1439 [2023-11-29 02:04:37,124 INFO L226 Difference]: Without dead ends: 1138 [2023-11-29 02:04:37,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:04:37,125 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 277 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:37,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 2973 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 02:04:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-11-29 02:04:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1094. [2023-11-29 02:04:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1066 states have (on average 1.475609756097561) internal successors, (1573), 1070 states have internal predecessors, (1573), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:04:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1608 transitions. [2023-11-29 02:04:37,143 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1608 transitions. Word has length 123 [2023-11-29 02:04:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:37,144 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1608 transitions. [2023-11-29 02:04:37,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1608 transitions. [2023-11-29 02:04:37,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 02:04:37,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:37,146 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-29 02:04:37,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-11-29 02:04:37,146 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:37,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:37,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1584612041, now seen corresponding path program 1 times [2023-11-29 02:04:37,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:37,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371812795] [2023-11-29 02:04:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:37,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:04:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:04:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:04:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:04:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:04:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:04:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:04:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:04:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:04:37,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:37,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371812795] [2023-11-29 02:04:37,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371812795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:37,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:37,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:04:37,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678192740] [2023-11-29 02:04:37,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:37,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:04:37,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:04:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:04:37,686 INFO L87 Difference]: Start difference. First operand 1094 states and 1608 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 02:04:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:39,677 INFO L93 Difference]: Finished difference Result 1555 states and 2296 transitions. [2023-11-29 02:04:39,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:04:39,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 123 [2023-11-29 02:04:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:39,680 INFO L225 Difference]: With dead ends: 1555 [2023-11-29 02:04:39,680 INFO L226 Difference]: Without dead ends: 1508 [2023-11-29 02:04:39,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:04:39,681 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 590 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:39,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 2916 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 02:04:39,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2023-11-29 02:04:39,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1083. [2023-11-29 02:04:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1055 states have (on average 1.4729857819905214) internal successors, (1554), 1059 states have internal predecessors, (1554), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:04:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1589 transitions. [2023-11-29 02:04:39,710 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1589 transitions. Word has length 123 [2023-11-29 02:04:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:39,710 INFO L495 AbstractCegarLoop]: Abstraction has 1083 states and 1589 transitions. [2023-11-29 02:04:39,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 02:04:39,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1589 transitions. [2023-11-29 02:04:39,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 02:04:39,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:39,712 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-29 02:04:39,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-11-29 02:04:39,712 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:39,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:39,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1653035399, now seen corresponding path program 1 times [2023-11-29 02:04:39,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:39,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478606356] [2023-11-29 02:04:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:39,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:41,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:04:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:04:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:04:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:04:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:04:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:04:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:41,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:04:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:42,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:04:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:04:42,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:42,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478606356] [2023-11-29 02:04:42,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478606356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:42,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:42,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-29 02:04:42,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894864912] [2023-11-29 02:04:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:42,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 02:04:42,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:42,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 02:04:42,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:04:42,713 INFO L87 Difference]: Start difference. First operand 1083 states and 1589 transitions. Second operand has 18 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:53,053 INFO L93 Difference]: Finished difference Result 1331 states and 1926 transitions. [2023-11-29 02:04:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 02:04:53,054 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2023-11-29 02:04:53,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:53,056 INFO L225 Difference]: With dead ends: 1331 [2023-11-29 02:04:53,056 INFO L226 Difference]: Without dead ends: 1245 [2023-11-29 02:04:53,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2023-11-29 02:04:53,057 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 383 mSDsluCounter, 3596 mSDsCounter, 0 mSdLazyCounter, 3416 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 4048 SdHoareTripleChecker+Invalid, 3479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:53,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 4048 Invalid, 3479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3416 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-11-29 02:04:53,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-11-29 02:04:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1143. [2023-11-29 02:04:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1115 states have (on average 1.4717488789237667) internal successors, (1641), 1119 states have internal predecessors, (1641), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:04:53,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1676 transitions. [2023-11-29 02:04:53,078 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1676 transitions. Word has length 123 [2023-11-29 02:04:53,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:53,078 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1676 transitions. [2023-11-29 02:04:53,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:04:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1676 transitions. [2023-11-29 02:04:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 02:04:53,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:53,080 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-29 02:04:53,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-11-29 02:04:53,080 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:53,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1415479998, now seen corresponding path program 1 times [2023-11-29 02:04:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651594862] [2023-11-29 02:04:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:53,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:54,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:04:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:04:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:04:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:54,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:04:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:54,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:04:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:54,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:04:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:54,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:04:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:04:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:55,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:04:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:04:55,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:55,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651594862] [2023-11-29 02:04:55,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651594862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:55,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:55,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 02:04:55,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001269990] [2023-11-29 02:04:55,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:55,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 02:04:55,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:55,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 02:04:55,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:04:55,733 INFO L87 Difference]: Start difference. First operand 1143 states and 1676 transitions. Second operand has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:05:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:05:01,045 INFO L93 Difference]: Finished difference Result 1511 states and 2191 transitions. [2023-11-29 02:05:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:05:01,046 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2023-11-29 02:05:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:05:01,048 INFO L225 Difference]: With dead ends: 1511 [2023-11-29 02:05:01,048 INFO L226 Difference]: Without dead ends: 1240 [2023-11-29 02:05:01,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:05:01,049 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 298 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:05:01,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 3112 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 02:05:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2023-11-29 02:05:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1143. [2023-11-29 02:05:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1115 states have (on average 1.4717488789237667) internal successors, (1641), 1119 states have internal predecessors, (1641), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:05:01,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1676 transitions. [2023-11-29 02:05:01,078 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1676 transitions. Word has length 123 [2023-11-29 02:05:01,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:05:01,078 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1676 transitions. [2023-11-29 02:05:01,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:05:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1676 transitions. [2023-11-29 02:05:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 02:05:01,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:01,081 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-29 02:05:01,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-11-29 02:05:01,081 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:01,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash -613106112, now seen corresponding path program 1 times [2023-11-29 02:05:01,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:01,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428125548] [2023-11-29 02:05:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:01,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:05:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:05:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:05:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:05:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:05:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:05:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:05:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:02,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:05:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:02,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:05:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:05:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:05:03,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:05:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428125548] [2023-11-29 02:05:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428125548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:05:03,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:05:03,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 02:05:03,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419804724] [2023-11-29 02:05:03,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:05:03,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:05:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:05:03,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:05:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:05:03,420 INFO L87 Difference]: Start difference. First operand 1143 states and 1676 transitions. Second operand has 15 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:05:10,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:05:10,022 INFO L93 Difference]: Finished difference Result 1515 states and 2198 transitions. [2023-11-29 02:05:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:05:10,022 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2023-11-29 02:05:10,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:05:10,025 INFO L225 Difference]: With dead ends: 1515 [2023-11-29 02:05:10,025 INFO L226 Difference]: Without dead ends: 1226 [2023-11-29 02:05:10,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:05:10,025 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 230 mSDsluCounter, 3798 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 4281 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:05:10,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 4281 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-29 02:05:10,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2023-11-29 02:05:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1143. [2023-11-29 02:05:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1115 states have (on average 1.4717488789237667) internal successors, (1641), 1119 states have internal predecessors, (1641), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:05:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1676 transitions. [2023-11-29 02:05:10,052 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1676 transitions. Word has length 123 [2023-11-29 02:05:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:05:10,052 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1676 transitions. [2023-11-29 02:05:10,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:05:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1676 transitions. [2023-11-29 02:05:10,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 02:05:10,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:10,055 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2023-11-29 02:05:10,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-11-29 02:05:10,055 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:10,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:10,056 INFO L85 PathProgramCache]: Analyzing trace with hash -836143970, now seen corresponding path program 1 times [2023-11-29 02:05:10,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:10,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047777421] [2023-11-29 02:05:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:10,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:05:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:05:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:05:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:05:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:05:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:05:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:05:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:05:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:05:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 02:05:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 02:05:11,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:05:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047777421] [2023-11-29 02:05:11,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047777421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:05:11,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:05:11,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 02:05:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783267094] [2023-11-29 02:05:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:05:11,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:05:11,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:05:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:05:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:05:11,585 INFO L87 Difference]: Start difference. First operand 1143 states and 1676 transitions. Second operand has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:05:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:05:16,717 INFO L93 Difference]: Finished difference Result 1861 states and 2735 transitions. [2023-11-29 02:05:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:05:16,717 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 124 [2023-11-29 02:05:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:05:16,720 INFO L225 Difference]: With dead ends: 1861 [2023-11-29 02:05:16,721 INFO L226 Difference]: Without dead ends: 1818 [2023-11-29 02:05:16,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:05:16,721 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 499 mSDsluCounter, 4318 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 4791 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:05:16,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 4791 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 02:05:16,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2023-11-29 02:05:16,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1143. [2023-11-29 02:05:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1115 states have (on average 1.4717488789237667) internal successors, (1641), 1119 states have internal predecessors, (1641), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:05:16,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1676 transitions. [2023-11-29 02:05:16,742 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1676 transitions. Word has length 124 [2023-11-29 02:05:16,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:05:16,743 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1676 transitions. [2023-11-29 02:05:16,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:05:16,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1676 transitions. [2023-11-29 02:05:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 02:05:16,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:16,745 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2023-11-29 02:05:16,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-11-29 02:05:16,745 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:16,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:16,746 INFO L85 PathProgramCache]: Analyzing trace with hash 388086834, now seen corresponding path program 1 times [2023-11-29 02:05:16,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:16,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739055474] [2023-11-29 02:05:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:16,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:05:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:05:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:05:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:05:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:05:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:05:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:05:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:05:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:05:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 02:05:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:05:17,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:05:17,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739055474] [2023-11-29 02:05:17,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739055474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:05:17,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:05:17,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:05:17,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726740582] [2023-11-29 02:05:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:05:17,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:05:17,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:05:17,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:05:17,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:05:17,839 INFO L87 Difference]: Start difference. First operand 1143 states and 1676 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:05:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:05:21,180 INFO L93 Difference]: Finished difference Result 1620 states and 2355 transitions. [2023-11-29 02:05:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:05:21,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 124 [2023-11-29 02:05:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:05:21,183 INFO L225 Difference]: With dead ends: 1620 [2023-11-29 02:05:21,183 INFO L226 Difference]: Without dead ends: 1319 [2023-11-29 02:05:21,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:05:21,184 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 257 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:05:21,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 2910 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 02:05:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-11-29 02:05:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1141. [2023-11-29 02:05:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1113 states have (on average 1.472596585804133) internal successors, (1639), 1117 states have internal predecessors, (1639), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:05:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1674 transitions. [2023-11-29 02:05:21,203 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1674 transitions. Word has length 124 [2023-11-29 02:05:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:05:21,204 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1674 transitions. [2023-11-29 02:05:21,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:05:21,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1674 transitions. [2023-11-29 02:05:21,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 02:05:21,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:21,205 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2023-11-29 02:05:21,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-11-29 02:05:21,206 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:21,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:21,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1854505829, now seen corresponding path program 1 times [2023-11-29 02:05:21,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:21,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561401855] [2023-11-29 02:05:21,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:21,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:05:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:05:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:05:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:05:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:05:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:05:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-29 02:05:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 02:05:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 02:05:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 02:05:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 02:05:22,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:05:22,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561401855] [2023-11-29 02:05:22,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561401855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:05:22,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:05:22,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:05:22,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720443341] [2023-11-29 02:05:22,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:05:22,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:05:22,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:05:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:05:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:05:22,947 INFO L87 Difference]: Start difference. First operand 1141 states and 1674 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:05:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:05:26,089 INFO L93 Difference]: Finished difference Result 1499 states and 2177 transitions. [2023-11-29 02:05:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:05:26,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 124 [2023-11-29 02:05:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:05:26,091 INFO L225 Difference]: With dead ends: 1499 [2023-11-29 02:05:26,091 INFO L226 Difference]: Without dead ends: 1198 [2023-11-29 02:05:26,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:05:26,092 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 259 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:05:26,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 2253 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 02:05:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2023-11-29 02:05:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1144. [2023-11-29 02:05:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1116 states have (on average 1.4722222222222223) internal successors, (1643), 1120 states have internal predecessors, (1643), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2023-11-29 02:05:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1678 transitions. [2023-11-29 02:05:26,111 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1678 transitions. Word has length 124 [2023-11-29 02:05:26,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:05:26,111 INFO L495 AbstractCegarLoop]: Abstraction has 1144 states and 1678 transitions. [2023-11-29 02:05:26,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 02:05:26,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1678 transitions. [2023-11-29 02:05:26,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 02:05:26,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:26,113 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2023-11-29 02:05:26,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-11-29 02:05:26,113 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:26,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:26,113 INFO L85 PathProgramCache]: Analyzing trace with hash -547519446, now seen corresponding path program 1 times [2023-11-29 02:05:26,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:26,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478080529] [2023-11-29 02:05:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:26,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat