./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/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_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/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_16bb8055-8eef-4a1b-893b-ee744346b42c/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 21e14c4abf3c8c626ff1e4d64bac7246a96ab8c19ab8b6f263006a7e1f8fc191 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:13:49,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:13:49,803 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 05:13:49,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:13:49,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:13:49,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:13:49,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:13:49,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:13:49,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:13:49,832 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:13:49,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:13:49,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:13:49,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:13:49,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:13:49,835 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:13:49,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:13:49,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:13:49,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:13:49,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:13:49,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:13:49,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:13:49,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:13:49,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:13:49,840 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:13:49,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:13:49,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:13:49,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:13:49,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:13:49,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:13:49,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:13:49,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:13:49,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:13:49,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:13:49,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:13:49,843 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:13:49,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:13:49,844 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:13:49,844 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:13:49,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:13:49,844 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_16bb8055-8eef-4a1b-893b-ee744346b42c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21e14c4abf3c8c626ff1e4d64bac7246a96ab8c19ab8b6f263006a7e1f8fc191 [2023-11-29 05:13:50,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:13:50,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:13:50,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:13:50,087 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:13:50,087 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:13:50,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i [2023-11-29 05:13:52,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:13:53,210 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:13:53,211 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i [2023-11-29 05:13:53,242 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/data/04ab5575f/427c8fd2b0c145e68a47c2e14c55e50f/FLAG44998e678 [2023-11-29 05:13:53,256 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/data/04ab5575f/427c8fd2b0c145e68a47c2e14c55e50f [2023-11-29 05:13:53,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:13:53,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:13:53,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:13:53,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:13:53,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:13:53,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:53,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed0cb7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:53, skipping insertion in model container [2023-11-29 05:13:53,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:13:53" (1/1) ... [2023-11-29 05:13:53,363 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:13:53,568 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_16bb8055-8eef-4a1b-893b-ee744346b42c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4504,4517] [2023-11-29 05:13:53,574 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_16bb8055-8eef-4a1b-893b-ee744346b42c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4564,4577] [2023-11-29 05:13:54,352 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,352 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,353 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,354 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,355 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,372 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,372 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,694 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 05:13:54,695 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 05:13:54,696 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 05:13:54,697 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 05:13:54,699 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 05:13:54,699 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 05:13:54,700 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 05:13:54,701 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 05:13:54,701 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 05:13:54,702 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 05:13:54,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:54,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:13:55,024 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:13:55,035 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_16bb8055-8eef-4a1b-893b-ee744346b42c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4504,4517] [2023-11-29 05:13:55,036 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_16bb8055-8eef-4a1b-893b-ee744346b42c/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4564,4577] [2023-11-29 05:13:55,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,069 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,075 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,075 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,077 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,077 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,108 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 05:13:55,109 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 05:13:55,110 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 05:13:55,110 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 05:13:55,111 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 05:13:55,111 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 05:13:55,112 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 05:13:55,112 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 05:13:55,112 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 05:13:55,113 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 05:13:55,204 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8271] [2023-11-29 05:13:55,206 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,206 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:13:55,219 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8757-8768] [2023-11-29 05:13:55,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:13:55,399 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,400 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,400 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,400 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,400 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,400 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,401 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,401 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,401 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,401 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,401 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,402 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,402 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,402 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,402 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,402 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,402 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,403 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:13:55,410 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:13:55,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55 WrapperNode [2023-11-29 05:13:55,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:13:55,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:13:55,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:13:55,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:13:55,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,560 INFO L138 Inliner]: procedures = 689, calls = 2617, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 810 [2023-11-29 05:13:55,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:13:55,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:13:55,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:13:55,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:13:55,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,583 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,647 INFO L175 MemorySlicer]: Split 538 memory accesses to 9 slices as follows [2, 5, 256, 3, 236, 3, 24, 6, 3]. 48 percent of accesses are in the largest equivalence class. The 506 initializations are split as follows [2, 5, 256, 2, 236, 0, 2, 0, 3]. The 5 writes are split as follows [0, 0, 0, 0, 0, 0, 3, 2, 0]. [2023-11-29 05:13:55,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,683 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:13:55,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:13:55,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:13:55,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:13:55,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (1/1) ... [2023-11-29 05:13:55,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:13:55,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:55,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:13:55,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:13:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-29 05:13:55,788 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-29 05:13:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:13:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-29 05:13:55,789 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-29 05:13:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:13:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:13:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:13:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:13:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:13:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 05:13:55,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 05:13:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 05:13:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-29 05:13:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 05:13:55,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 05:13:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2023-11-29 05:13:55,790 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2023-11-29 05:13:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:13:55,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:13:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 05:13:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 05:13:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 05:13:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 05:13:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 05:13:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 05:13:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 05:13:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-29 05:13:55,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-29 05:13:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:13:55,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:13:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 05:13:55,792 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 05:13:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-29 05:13:55,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-29 05:13:55,792 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:13:55,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:13:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:13:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 05:13:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 05:13:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 05:13:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 05:13:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 05:13:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 05:13:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 05:13:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-29 05:13:55,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-29 05:13:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 05:13:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 05:13:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 05:13:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 05:13:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 05:13:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 05:13:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-29 05:13:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-29 05:13:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-29 05:13:55,794 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2023-11-29 05:13:55,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2023-11-29 05:13:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:13:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:13:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:13:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:13:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:13:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 05:13:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 05:13:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 05:13:55,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-29 05:13:55,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:13:55,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:13:55,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:13:55,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:13:55,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:13:55,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 05:13:55,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 05:13:55,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 05:13:55,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 05:13:56,068 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:13:56,070 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:13:57,270 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:13:57,447 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:13:57,447 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:13:57,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:13:57 BoogieIcfgContainer [2023-11-29 05:13:57,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:13:57,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:13:57,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:13:57,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:13:57,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:13:53" (1/3) ... [2023-11-29 05:13:57,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e9889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:13:57, skipping insertion in model container [2023-11-29 05:13:57,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:13:55" (2/3) ... [2023-11-29 05:13:57,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e9889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:13:57, skipping insertion in model container [2023-11-29 05:13:57,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:13:57" (3/3) ... [2023-11-29 05:13:57,456 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_satisfies_pred_harness.i [2023-11-29 05:13:57,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:13:57,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:13:57,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:13:57,518 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;@181e20ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:13:57,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:13:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 50 states have (on average 1.3) internal successors, (65), 51 states have internal predecessors, (65), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 05:13:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 05:13:57,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:57,531 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-29 05:13:57,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:57,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash -532299695, now seen corresponding path program 1 times [2023-11-29 05:13:57,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:57,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298741053] [2023-11-29 05:13:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:57,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:13:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:58,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 05:13:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 05:13:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:58,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:13:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:58,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 05:13:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:58,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:13:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 05:13:58,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:58,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298741053] [2023-11-29 05:13:58,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298741053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:58,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:58,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:13:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306392517] [2023-11-29 05:13:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:58,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:13:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:58,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:13:58,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:13:58,192 INFO L87 Difference]: Start difference. First operand has 82 states, 50 states have (on average 1.3) internal successors, (65), 51 states have internal predecessors, (65), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 05:13:58,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:58,651 INFO L93 Difference]: Finished difference Result 162 states and 229 transitions. [2023-11-29 05:13:58,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:13:58,654 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2023-11-29 05:13:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:58,662 INFO L225 Difference]: With dead ends: 162 [2023-11-29 05:13:58,662 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 05:13:58,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:13:58,671 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:58,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:13:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 05:13:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-29 05:13:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 47 states have internal predecessors, (56), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 05:13:58,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2023-11-29 05:13:58,719 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 54 [2023-11-29 05:13:58,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:58,720 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2023-11-29 05:13:58,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 05:13:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2023-11-29 05:13:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 05:13:58,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:58,724 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-29 05:13:58,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:13:58,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:58,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1011012548, now seen corresponding path program 1 times [2023-11-29 05:13:58,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:58,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630110123] [2023-11-29 05:13:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:58,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:13:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:59,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:13:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:13:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 05:13:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 05:13:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:59,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 05:13:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 05:13:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:59,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 05:13:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 05:13:59,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:59,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630110123] [2023-11-29 05:13:59,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630110123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:13:59,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693787326] [2023-11-29 05:13:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:59,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:59,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:59,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:13:59,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:14:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:00,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:14:00,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:14:00,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:00,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693787326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:00,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:14:00,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-29 05:14:00,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658838953] [2023-11-29 05:14:00,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:00,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:14:00,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:14:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:00,271 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 05:14:00,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:00,735 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2023-11-29 05:14:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:14:00,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-11-29 05:14:00,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:00,739 INFO L225 Difference]: With dead ends: 139 [2023-11-29 05:14:00,739 INFO L226 Difference]: Without dead ends: 78 [2023-11-29 05:14:00,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:00,742 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 23 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:00,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 270 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:14:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-29 05:14:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-29 05:14:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 49 states have internal predecessors, (57), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2023-11-29 05:14:00,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 103 transitions. [2023-11-29 05:14:00,757 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 103 transitions. Word has length 56 [2023-11-29 05:14:00,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:00,758 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 103 transitions. [2023-11-29 05:14:00,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 05:14:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 103 transitions. [2023-11-29 05:14:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 05:14:00,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:00,761 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-29 05:14:00,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:14:00,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 05:14:00,966 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:00,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:00,967 INFO L85 PathProgramCache]: Analyzing trace with hash -544756703, now seen corresponding path program 1 times [2023-11-29 05:14:00,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:00,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149231515] [2023-11-29 05:14:00,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:00,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:14:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:01,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:14:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:14:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:01,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 05:14:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 05:14:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:01,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:14:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 05:14:01,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:01,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149231515] [2023-11-29 05:14:01,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149231515] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:14:01,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702347898] [2023-11-29 05:14:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:01,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:01,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:01,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:14:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:02,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:14:02,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:14:02,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:02,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702347898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:02,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:14:02,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-29 05:14:02,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207271969] [2023-11-29 05:14:02,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:02,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:02,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:02,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:02,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:14:02,565 INFO L87 Difference]: Start difference. First operand 78 states and 103 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 05:14:03,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:03,455 INFO L93 Difference]: Finished difference Result 132 states and 173 transitions. [2023-11-29 05:14:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:03,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 58 [2023-11-29 05:14:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:03,457 INFO L225 Difference]: With dead ends: 132 [2023-11-29 05:14:03,458 INFO L226 Difference]: Without dead ends: 78 [2023-11-29 05:14:03,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:14:03,460 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 43 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:03,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 410 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:14:03,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-29 05:14:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-29 05:14:03,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 49 states have internal predecessors, (57), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2023-11-29 05:14:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2023-11-29 05:14:03,474 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 58 [2023-11-29 05:14:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:03,475 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2023-11-29 05:14:03,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 05:14:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2023-11-29 05:14:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 05:14:03,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:03,477 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-29 05:14:03,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:14:03,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:03,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:03,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:03,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1279648151, now seen corresponding path program 1 times [2023-11-29 05:14:03,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132513292] [2023-11-29 05:14:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:03,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:04,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:14:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:04,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:14:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:14:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:14:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:14:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:04,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:14:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 05:14:04,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132513292] [2023-11-29 05:14:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132513292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:04,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:04,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:14:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219534391] [2023-11-29 05:14:04,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:04,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:04,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:04,710 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 05:14:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:05,777 INFO L93 Difference]: Finished difference Result 89 states and 116 transitions. [2023-11-29 05:14:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:05,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 62 [2023-11-29 05:14:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:05,780 INFO L225 Difference]: With dead ends: 89 [2023-11-29 05:14:05,780 INFO L226 Difference]: Without dead ends: 87 [2023-11-29 05:14:05,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:14:05,782 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 17 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:05,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 579 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:14:05,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-29 05:14:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2023-11-29 05:14:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 55 states have internal predecessors, (62), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (28), 21 states have call predecessors, (28), 21 states have call successors, (28) [2023-11-29 05:14:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 113 transitions. [2023-11-29 05:14:05,797 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 113 transitions. Word has length 62 [2023-11-29 05:14:05,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:05,798 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 113 transitions. [2023-11-29 05:14:05,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-29 05:14:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 113 transitions. [2023-11-29 05:14:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 05:14:05,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:05,800 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:14:05,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:14:05,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:05,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:05,801 INFO L85 PathProgramCache]: Analyzing trace with hash -751944369, now seen corresponding path program 1 times [2023-11-29 05:14:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:05,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575731781] [2023-11-29 05:14:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:05,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:14:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:07,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:08,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:14:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:08,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:14:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:08,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:14:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:14:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:14:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 05:14:08,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:08,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575731781] [2023-11-29 05:14:08,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575731781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:14:08,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816745566] [2023-11-29 05:14:08,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:08,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:08,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:08,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:08,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:14:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:09,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 2505 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-29 05:14:09,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:09,110 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 05:14:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 05:14:10,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:14:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 05:14:10,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816745566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:14:10,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:14:10,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 12] total 27 [2023-11-29 05:14:10,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646456687] [2023-11-29 05:14:10,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:14:10,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 05:14:10,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:10,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 05:14:10,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:14:10,846 INFO L87 Difference]: Start difference. First operand 86 states and 113 transitions. Second operand has 27 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 10 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-29 05:14:15,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:15,184 INFO L93 Difference]: Finished difference Result 260 states and 354 transitions. [2023-11-29 05:14:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 05:14:15,185 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 10 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) Word has length 66 [2023-11-29 05:14:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:15,189 INFO L225 Difference]: With dead ends: 260 [2023-11-29 05:14:15,189 INFO L226 Difference]: Without dead ends: 190 [2023-11-29 05:14:15,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=267, Invalid=1713, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 05:14:15,192 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 193 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:15,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 783 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 05:14:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-29 05:14:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2023-11-29 05:14:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 110 states have internal predecessors, (126), 47 states have call successors, (47), 17 states have call predecessors, (47), 19 states have return successors, (58), 45 states have call predecessors, (58), 43 states have call successors, (58) [2023-11-29 05:14:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 231 transitions. [2023-11-29 05:14:15,232 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 231 transitions. Word has length 66 [2023-11-29 05:14:15,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:15,233 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 231 transitions. [2023-11-29 05:14:15,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 10 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-29 05:14:15,233 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 231 transitions. [2023-11-29 05:14:15,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 05:14:15,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:15,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2023-11-29 05:14:15,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:14:15,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:15,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:15,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2086396830, now seen corresponding path program 1 times [2023-11-29 05:14:15,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:15,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126402968] [2023-11-29 05:14:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:15,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:14:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:14:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:14:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 05:14:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 05:14:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:14:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 05:14:15,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:15,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126402968] [2023-11-29 05:14:15,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126402968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:15,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:15,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:15,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218238170] [2023-11-29 05:14:15,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:15,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:15,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:15,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:15,674 INFO L87 Difference]: Start difference. First operand 173 states and 231 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 05:14:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:16,001 INFO L93 Difference]: Finished difference Result 241 states and 320 transitions. [2023-11-29 05:14:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:16,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2023-11-29 05:14:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:16,005 INFO L225 Difference]: With dead ends: 241 [2023-11-29 05:14:16,005 INFO L226 Difference]: Without dead ends: 176 [2023-11-29 05:14:16,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:16,007 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:16,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:14:16,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-29 05:14:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-11-29 05:14:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 109 states have (on average 1.18348623853211) internal successors, (129), 113 states have internal predecessors, (129), 47 states have call successors, (47), 17 states have call predecessors, (47), 19 states have return successors, (58), 45 states have call predecessors, (58), 43 states have call successors, (58) [2023-11-29 05:14:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 234 transitions. [2023-11-29 05:14:16,037 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 234 transitions. Word has length 73 [2023-11-29 05:14:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:16,037 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 234 transitions. [2023-11-29 05:14:16,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 05:14:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 234 transitions. [2023-11-29 05:14:16,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 05:14:16,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:16,039 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] [2023-11-29 05:14:16,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:14:16,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:16,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash -32074318, now seen corresponding path program 1 times [2023-11-29 05:14:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:16,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400439347] [2023-11-29 05:14:16,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:16,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:14:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:14:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:14:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:14:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:14:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:14:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:14:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:14:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 05:14:16,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:16,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400439347] [2023-11-29 05:14:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400439347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:16,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:16,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:14:16,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711061247] [2023-11-29 05:14:16,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:16,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:14:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:14:16,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:14:16,407 INFO L87 Difference]: Start difference. First operand 176 states and 234 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 05:14:16,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:16,997 INFO L93 Difference]: Finished difference Result 258 states and 336 transitions. [2023-11-29 05:14:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:14:16,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2023-11-29 05:14:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:17,000 INFO L225 Difference]: With dead ends: 258 [2023-11-29 05:14:17,000 INFO L226 Difference]: Without dead ends: 172 [2023-11-29 05:14:17,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:14:17,001 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 15 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:17,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 300 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:14:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-29 05:14:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-11-29 05:14:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 109 states have internal predecessors, (125), 47 states have call successors, (47), 17 states have call predecessors, (47), 17 states have return successors, (55), 45 states have call predecessors, (55), 43 states have call successors, (55) [2023-11-29 05:14:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 227 transitions. [2023-11-29 05:14:17,023 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 227 transitions. Word has length 73 [2023-11-29 05:14:17,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:17,024 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 227 transitions. [2023-11-29 05:14:17,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 05:14:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 227 transitions. [2023-11-29 05:14:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 05:14:17,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:17,026 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-29 05:14:17,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:14:17,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:17,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1540145073, now seen corresponding path program 1 times [2023-11-29 05:14:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:17,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014268706] [2023-11-29 05:14:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:14:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:17,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:14:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:14:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:14:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:14:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 05:14:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 05:14:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:17,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 05:14:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 05:14:17,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:17,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014268706] [2023-11-29 05:14:17,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014268706] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:14:17,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446098208] [2023-11-29 05:14:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:17,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:17,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:17,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:17,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:14:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:18,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 05:14:18,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:19,174 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 05:14:19,174 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 46 treesize of output 26 [2023-11-29 05:14:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 05:14:19,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:14:19,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446098208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:14:19,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:14:19,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 20 [2023-11-29 05:14:19,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498843574] [2023-11-29 05:14:19,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:14:19,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:14:19,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:19,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:14:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:14:19,278 INFO L87 Difference]: Start difference. First operand 172 states and 227 transitions. Second operand has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 18 states have internal predecessors, (78), 7 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-29 05:14:24,093 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 05:14:29,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:14:34,292 WARN L539 Checker$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 05:14:38,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:14:42,418 WARN L539 Checker$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 05:14:46,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:14:50,968 WARN L539 Checker$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 05:14:55,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:14:59,228 WARN L539 Checker$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 05:15:03,332 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 05:15:03,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:03,773 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2023-11-29 05:15:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 05:15:03,773 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 18 states have internal predecessors, (78), 7 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 74 [2023-11-29 05:15:03,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:03,775 INFO L225 Difference]: With dead ends: 354 [2023-11-29 05:15:03,775 INFO L226 Difference]: Without dead ends: 227 [2023-11-29 05:15:03,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 94 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=245, Invalid=1825, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 05:15:03,778 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 108 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 57 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:03,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1440 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1458 Invalid, 10 Unknown, 0 Unchecked, 43.8s Time] [2023-11-29 05:15:03,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-29 05:15:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 213. [2023-11-29 05:15:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 138 states have (on average 1.1666666666666667) internal successors, (161), 142 states have internal predecessors, (161), 50 states have call successors, (50), 24 states have call predecessors, (50), 24 states have return successors, (58), 46 states have call predecessors, (58), 44 states have call successors, (58) [2023-11-29 05:15:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 269 transitions. [2023-11-29 05:15:03,810 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 269 transitions. Word has length 74 [2023-11-29 05:15:03,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:03,810 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 269 transitions. [2023-11-29 05:15:03,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 18 states have internal predecessors, (78), 7 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-29 05:15:03,811 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 269 transitions. [2023-11-29 05:15:03,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 05:15:03,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:03,812 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:15:03,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:15:04,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:04,013 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:04,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:04,013 INFO L85 PathProgramCache]: Analyzing trace with hash 803440710, now seen corresponding path program 1 times [2023-11-29 05:15:04,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:04,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121260828] [2023-11-29 05:15:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:04,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:15:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:15:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:15:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:15:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:15:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 05:15:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:15:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 05:15:05,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:05,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121260828] [2023-11-29 05:15:05,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121260828] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:05,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915178870] [2023-11-29 05:15:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:05,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:05,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:05,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:05,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:15:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:06,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 2563 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 05:15:06,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:06,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2023-11-29 05:15:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:15:06,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:06,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915178870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:06,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:15:06,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 15 [2023-11-29 05:15:06,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526442855] [2023-11-29 05:15:06,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:06,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:15:06,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:15:06,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:15:06,434 INFO L87 Difference]: Start difference. First operand 213 states and 269 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-29 05:15:07,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:07,835 INFO L93 Difference]: Finished difference Result 384 states and 485 transitions. [2023-11-29 05:15:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:15:07,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 73 [2023-11-29 05:15:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:07,838 INFO L225 Difference]: With dead ends: 384 [2023-11-29 05:15:07,838 INFO L226 Difference]: Without dead ends: 262 [2023-11-29 05:15:07,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:15:07,840 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 107 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:07,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 453 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 05:15:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-29 05:15:07,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 234. [2023-11-29 05:15:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 153 states have (on average 1.1699346405228759) internal successors, (179), 157 states have internal predecessors, (179), 54 states have call successors, (54), 25 states have call predecessors, (54), 26 states have return successors, (64), 51 states have call predecessors, (64), 48 states have call successors, (64) [2023-11-29 05:15:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 297 transitions. [2023-11-29 05:15:07,875 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 297 transitions. Word has length 73 [2023-11-29 05:15:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:07,875 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 297 transitions. [2023-11-29 05:15:07,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-29 05:15:07,876 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 297 transitions. [2023-11-29 05:15:07,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 05:15:07,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:07,877 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:15:07,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:15:08,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:08,078 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:08,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:08,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1736488211, now seen corresponding path program 1 times [2023-11-29 05:15:08,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:08,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214920802] [2023-11-29 05:15:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:08,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:15:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:15:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:15:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:15:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:15:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:15:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:15:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:15:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-29 05:15:08,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:08,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214920802] [2023-11-29 05:15:08,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214920802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:08,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:15:08,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:15:08,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768565539] [2023-11-29 05:15:08,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:08,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:15:08,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:15:08,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:15:08,811 INFO L87 Difference]: Start difference. First operand 234 states and 297 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-29 05:15:09,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:09,763 INFO L93 Difference]: Finished difference Result 246 states and 309 transitions. [2023-11-29 05:15:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:15:09,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75 [2023-11-29 05:15:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:09,766 INFO L225 Difference]: With dead ends: 246 [2023-11-29 05:15:09,766 INFO L226 Difference]: Without dead ends: 244 [2023-11-29 05:15:09,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:15:09,767 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 17 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:09,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 607 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:15:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-11-29 05:15:09,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2023-11-29 05:15:09,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 159 states have (on average 1.1635220125786163) internal successors, (185), 163 states have internal predecessors, (185), 55 states have call successors, (55), 27 states have call predecessors, (55), 28 states have return successors, (65), 52 states have call predecessors, (65), 49 states have call successors, (65) [2023-11-29 05:15:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 305 transitions. [2023-11-29 05:15:09,803 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 305 transitions. Word has length 75 [2023-11-29 05:15:09,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:09,804 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 305 transitions. [2023-11-29 05:15:09,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-29 05:15:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 305 transitions. [2023-11-29 05:15:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 05:15:09,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:09,806 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-29 05:15:09,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:15:09,806 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:09,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash -643052490, now seen corresponding path program 1 times [2023-11-29 05:15:09,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:09,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842951307] [2023-11-29 05:15:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:09,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:15:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:10,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:15:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:10,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:15:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:10,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 05:15:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:10,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 05:15:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 05:15:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:15:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 05:15:10,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:10,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842951307] [2023-11-29 05:15:10,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842951307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:10,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144656250] [2023-11-29 05:15:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:10,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:10,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:10,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:10,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:15:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:11,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 05:15:11,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 05:15:11,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:11,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144656250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:11,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:15:11,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 14 [2023-11-29 05:15:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984586865] [2023-11-29 05:15:11,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:11,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:15:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:11,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:15:11,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:15:11,357 INFO L87 Difference]: Start difference. First operand 243 states and 305 transitions. Second operand has 12 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-29 05:15:12,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:12,546 INFO L93 Difference]: Finished difference Result 418 states and 529 transitions. [2023-11-29 05:15:12,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:15:12,547 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 80 [2023-11-29 05:15:12,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:12,557 INFO L225 Difference]: With dead ends: 418 [2023-11-29 05:15:12,558 INFO L226 Difference]: Without dead ends: 259 [2023-11-29 05:15:12,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:15:12,559 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 36 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:12,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 714 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 05:15:12,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-29 05:15:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 247. [2023-11-29 05:15:12,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 162 states have (on average 1.1604938271604939) internal successors, (188), 167 states have internal predecessors, (188), 55 states have call successors, (55), 27 states have call predecessors, (55), 29 states have return successors, (69), 52 states have call predecessors, (69), 49 states have call successors, (69) [2023-11-29 05:15:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 312 transitions. [2023-11-29 05:15:12,595 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 312 transitions. Word has length 80 [2023-11-29 05:15:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:12,596 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 312 transitions. [2023-11-29 05:15:12,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-29 05:15:12,596 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 312 transitions. [2023-11-29 05:15:12,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 05:15:12,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:12,597 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-29 05:15:12,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:15:12,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:15:12,807 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:12,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:12,807 INFO L85 PathProgramCache]: Analyzing trace with hash -356470577, now seen corresponding path program 2 times [2023-11-29 05:15:12,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:12,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449175569] [2023-11-29 05:15:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:12,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:15:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:15:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:15:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 05:15:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:15:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:15:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:15:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 05:15:14,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:14,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449175569] [2023-11-29 05:15:14,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449175569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:14,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932602424] [2023-11-29 05:15:14,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:15:14,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:14,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:14,804 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:14,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:15:15,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:15:15,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:15:15,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-29 05:15:15,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:15,368 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 13 treesize of output 9 [2023-11-29 05:15:15,372 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 13 treesize of output 9 [2023-11-29 05:15:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:15:16,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932602424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:16,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:15:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2023-11-29 05:15:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926151129] [2023-11-29 05:15:16,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:16,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:15:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:15:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:15:16,125 INFO L87 Difference]: Start difference. First operand 247 states and 312 transitions. Second operand has 14 states, 12 states have (on average 4.916666666666667) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-29 05:15:17,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:17,675 INFO L93 Difference]: Finished difference Result 622 states and 787 transitions. [2023-11-29 05:15:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:15:17,675 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.916666666666667) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 82 [2023-11-29 05:15:17,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:17,678 INFO L225 Difference]: With dead ends: 622 [2023-11-29 05:15:17,678 INFO L226 Difference]: Without dead ends: 435 [2023-11-29 05:15:17,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:15:17,680 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 100 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:17,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 495 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 05:15:17,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-11-29 05:15:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 341. [2023-11-29 05:15:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 228 states have (on average 1.162280701754386) internal successors, (265), 237 states have internal predecessors, (265), 73 states have call successors, (73), 35 states have call predecessors, (73), 39 states have return successors, (95), 68 states have call predecessors, (95), 65 states have call successors, (95) [2023-11-29 05:15:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 433 transitions. [2023-11-29 05:15:17,719 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 433 transitions. Word has length 82 [2023-11-29 05:15:17,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:17,719 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 433 transitions. [2023-11-29 05:15:17,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.916666666666667) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-29 05:15:17,720 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 433 transitions. [2023-11-29 05:15:17,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 05:15:17,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:17,721 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] [2023-11-29 05:15:17,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:15:17,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:15:17,922 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:17,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:17,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1985831281, now seen corresponding path program 1 times [2023-11-29 05:15:17,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:17,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685953725] [2023-11-29 05:15:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:17,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:15:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:15:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:15:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 05:15:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:15:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:15:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:15:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 05:15:18,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685953725] [2023-11-29 05:15:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685953725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189799013] [2023-11-29 05:15:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:18,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:18,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:18,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:18,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:15:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:15:18,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 05:15:18,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189799013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:18,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:15:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-11-29 05:15:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982598736] [2023-11-29 05:15:18,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:18,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:15:18,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:18,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:15:18,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:15:18,590 INFO L87 Difference]: Start difference. First operand 341 states and 433 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 05:15:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:19,208 INFO L93 Difference]: Finished difference Result 545 states and 708 transitions. [2023-11-29 05:15:19,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:15:19,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2023-11-29 05:15:19,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:19,211 INFO L225 Difference]: With dead ends: 545 [2023-11-29 05:15:19,211 INFO L226 Difference]: Without dead ends: 281 [2023-11-29 05:15:19,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:15:19,213 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 6 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:19,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 255 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:15:19,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-29 05:15:19,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 263. [2023-11-29 05:15:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 176 states have (on average 1.1477272727272727) internal successors, (202), 182 states have internal predecessors, (202), 56 states have call successors, (56), 28 states have call predecessors, (56), 30 states have return successors, (70), 52 states have call predecessors, (70), 50 states have call successors, (70) [2023-11-29 05:15:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 328 transitions. [2023-11-29 05:15:19,251 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 328 transitions. Word has length 82 [2023-11-29 05:15:19,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:19,251 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 328 transitions. [2023-11-29 05:15:19,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 05:15:19,252 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 328 transitions. [2023-11-29 05:15:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 05:15:19,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:19,253 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:15:19,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:15:19,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 05:15:19,453 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:19,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:19,454 INFO L85 PathProgramCache]: Analyzing trace with hash -638121620, now seen corresponding path program 1 times [2023-11-29 05:15:19,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:19,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230108116] [2023-11-29 05:15:19,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:19,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:15:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:15:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:15:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 05:15:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:15:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:15:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:15:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 05:15:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:15:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:15:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:15:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-29 05:15:19,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:19,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230108116] [2023-11-29 05:15:19,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230108116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:19,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:15:19,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:15:19,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067239927] [2023-11-29 05:15:19,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:19,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:15:19,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:19,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:15:19,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:15:19,996 INFO L87 Difference]: Start difference. First operand 263 states and 328 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 05:15:21,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:21,284 INFO L93 Difference]: Finished difference Result 275 states and 340 transitions. [2023-11-29 05:15:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:15:21,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90 [2023-11-29 05:15:21,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:21,287 INFO L225 Difference]: With dead ends: 275 [2023-11-29 05:15:21,287 INFO L226 Difference]: Without dead ends: 273 [2023-11-29 05:15:21,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:15:21,289 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 50 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:21,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 316 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 05:15:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-29 05:15:21,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2023-11-29 05:15:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 175 states have (on average 1.1428571428571428) internal successors, (200), 181 states have internal predecessors, (200), 54 states have call successors, (54), 28 states have call predecessors, (54), 31 states have return successors, (70), 51 states have call predecessors, (70), 50 states have call successors, (70) [2023-11-29 05:15:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 324 transitions. [2023-11-29 05:15:21,327 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 324 transitions. Word has length 90 [2023-11-29 05:15:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:21,328 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 324 transitions. [2023-11-29 05:15:21,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-29 05:15:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 324 transitions. [2023-11-29 05:15:21,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 05:15:21,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:21,330 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-29 05:15:21,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:15:21,331 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:21,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:21,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1222665689, now seen corresponding path program 1 times [2023-11-29 05:15:21,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:21,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76054998] [2023-11-29 05:15:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:21,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:23,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:23,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:15:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:15:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:15:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:24,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:15:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:15:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:24,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:15:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:24,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:15:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:15:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 05:15:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:24,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:15:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 05:15:24,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76054998] [2023-11-29 05:15:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76054998] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:15:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948525164] [2023-11-29 05:15:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:24,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:24,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:24,542 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:24,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:15:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:25,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 2608 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 05:15:25,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:25,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:15:25,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:15:25,922 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 24 treesize of output 20 [2023-11-29 05:15:25,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 05:15:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:15:25,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:25,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948525164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:25,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:15:25,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 32 [2023-11-29 05:15:25,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836106969] [2023-11-29 05:15:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:25,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:15:25,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:15:25,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2023-11-29 05:15:25,975 INFO L87 Difference]: Start difference. First operand 261 states and 324 transitions. Second operand has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 12 states have internal predecessors, (54), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-29 05:15:30,522 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 05:15:35,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:15:39,942 WARN L539 Checker$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 05:15:43,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:15:48,071 WARN L539 Checker$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 05:15:52,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:15:56,091 WARN L539 Checker$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 05:16:00,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:16:04,169 WARN L539 Checker$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 05:16:08,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:16:12,229 WARN L539 Checker$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 05:16:16,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:16:20,583 WARN L539 Checker$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 05:16:25,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:16:29,068 WARN L539 Checker$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 05:16:33,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:16:37,307 WARN L539 Checker$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 05:16:41,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:16:45,370 WARN L539 Checker$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 05:16:49,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:16:53,444 WARN L539 Checker$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 05:16:57,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:17:01,600 WARN L539 Checker$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 05:17:05,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:17:09,674 WARN L539 Checker$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 05:17:13,937 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 05:17:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:17:14,332 INFO L93 Difference]: Finished difference Result 548 states and 669 transitions. [2023-11-29 05:17:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 05:17:14,333 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 12 states have internal predecessors, (54), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 92 [2023-11-29 05:17:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:17:14,335 INFO L225 Difference]: With dead ends: 548 [2023-11-29 05:17:14,335 INFO L226 Difference]: Without dead ends: 375 [2023-11-29 05:17:14,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=238, Invalid=1568, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 05:17:14,337 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 201 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 31 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:17:14,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 866 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1483 Invalid, 26 Unknown, 0 Unchecked, 107.9s Time] [2023-11-29 05:17:14,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-29 05:17:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 272. [2023-11-29 05:17:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 185 states have (on average 1.1405405405405404) internal successors, (211), 191 states have internal predecessors, (211), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (66), 51 states have call predecessors, (66), 50 states have call successors, (66) [2023-11-29 05:17:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 331 transitions. [2023-11-29 05:17:14,366 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 331 transitions. Word has length 92 [2023-11-29 05:17:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:17:14,367 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 331 transitions. [2023-11-29 05:17:14,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.857142857142857) internal successors, (54), 12 states have internal predecessors, (54), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-11-29 05:17:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 331 transitions. [2023-11-29 05:17:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 05:17:14,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:17:14,368 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-29 05:17:14,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:17:14,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:17:14,569 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:17:14,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:17:14,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1907778692, now seen corresponding path program 1 times [2023-11-29 05:17:14,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:17:14,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128053829] [2023-11-29 05:17:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:14,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:17:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:17:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:17:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:17:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:17:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:17:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:17:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:17:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 05:17:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:17:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:17:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-29 05:17:16,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:17:16,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128053829] [2023-11-29 05:17:16,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128053829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:17:16,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:17:16,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-29 05:17:16,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207961822] [2023-11-29 05:17:16,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:17:16,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:17:16,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:17:16,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:17:16,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:17:16,781 INFO L87 Difference]: Start difference. First operand 272 states and 331 transitions. Second operand has 18 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 05:17:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:17:19,240 INFO L93 Difference]: Finished difference Result 356 states and 435 transitions. [2023-11-29 05:17:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:17:19,240 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) Word has length 98 [2023-11-29 05:17:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:17:19,243 INFO L225 Difference]: With dead ends: 356 [2023-11-29 05:17:19,243 INFO L226 Difference]: Without dead ends: 297 [2023-11-29 05:17:19,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2023-11-29 05:17:19,244 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 88 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:17:19,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 476 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 05:17:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-29 05:17:19,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 276. [2023-11-29 05:17:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 188 states have (on average 1.1382978723404256) internal successors, (214), 195 states have internal predecessors, (214), 54 states have call successors, (54), 29 states have call predecessors, (54), 33 states have return successors, (68), 51 states have call predecessors, (68), 50 states have call successors, (68) [2023-11-29 05:17:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 336 transitions. [2023-11-29 05:17:19,289 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 336 transitions. Word has length 98 [2023-11-29 05:17:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:17:19,290 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 336 transitions. [2023-11-29 05:17:19,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 05:17:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 336 transitions. [2023-11-29 05:17:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 05:17:19,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:17:19,291 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-29 05:17:19,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:17:19,292 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:17:19,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:17:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1206714114, now seen corresponding path program 1 times [2023-11-29 05:17:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:17:19,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254176377] [2023-11-29 05:17:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:19,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:17:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:17:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:17:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:17:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:17:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:17:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:17:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:17:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 05:17:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:17:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:17:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-29 05:17:19,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:17:19,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254176377] [2023-11-29 05:17:19,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254176377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:17:19,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:17:19,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:17:19,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133838749] [2023-11-29 05:17:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:17:19,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:17:19,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:17:19,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:17:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:17:19,894 INFO L87 Difference]: Start difference. First operand 276 states and 336 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 05:17:20,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:17:20,603 INFO L93 Difference]: Finished difference Result 401 states and 502 transitions. [2023-11-29 05:17:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:17:20,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 98 [2023-11-29 05:17:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:17:20,606 INFO L225 Difference]: With dead ends: 401 [2023-11-29 05:17:20,606 INFO L226 Difference]: Without dead ends: 264 [2023-11-29 05:17:20,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:17:20,607 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 42 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:17:20,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 159 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:17:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-29 05:17:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-29 05:17:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 177 states have (on average 1.1242937853107344) internal successors, (199), 183 states have internal predecessors, (199), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (64), 51 states have call predecessors, (64), 50 states have call successors, (64) [2023-11-29 05:17:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 317 transitions. [2023-11-29 05:17:20,657 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 317 transitions. Word has length 98 [2023-11-29 05:17:20,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:17:20,658 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 317 transitions. [2023-11-29 05:17:20,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 05:17:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 317 transitions. [2023-11-29 05:17:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:17:20,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:17:20,659 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-29 05:17:20,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:17:20,659 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:17:20,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:17:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash 136095445, now seen corresponding path program 1 times [2023-11-29 05:17:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:17:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050407213] [2023-11-29 05:17:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:20,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:17:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:17:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:17:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:17:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:17:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:17:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:17:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:17:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 05:17:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:17:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:17:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:21,673 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-29 05:17:21,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:17:21,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050407213] [2023-11-29 05:17:21,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050407213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:17:21,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:17:21,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 05:17:21,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403545196] [2023-11-29 05:17:21,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:17:21,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:17:21,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:17:21,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:17:21,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:17:21,675 INFO L87 Difference]: Start difference. First operand 264 states and 317 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 05:17:23,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:17:23,792 INFO L93 Difference]: Finished difference Result 288 states and 346 transitions. [2023-11-29 05:17:23,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:17:23,793 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2023-11-29 05:17:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:17:23,795 INFO L225 Difference]: With dead ends: 288 [2023-11-29 05:17:23,795 INFO L226 Difference]: Without dead ends: 286 [2023-11-29 05:17:23,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:17:23,796 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 73 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:17:23,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 547 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 05:17:23,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-29 05:17:23,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 277. [2023-11-29 05:17:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 186 states have (on average 1.118279569892473) internal successors, (208), 193 states have internal predecessors, (208), 55 states have call successors, (55), 31 states have call predecessors, (55), 35 states have return successors, (69), 52 states have call predecessors, (69), 51 states have call successors, (69) [2023-11-29 05:17:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 332 transitions. [2023-11-29 05:17:23,833 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 332 transitions. Word has length 100 [2023-11-29 05:17:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:17:23,833 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 332 transitions. [2023-11-29 05:17:23,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 05:17:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 332 transitions. [2023-11-29 05:17:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 05:17:23,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:17:23,835 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2023-11-29 05:17:23,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:17:23,835 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:17:23,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:17:23,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1727610949, now seen corresponding path program 1 times [2023-11-29 05:17:23,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:17:23,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603222575] [2023-11-29 05:17:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:23,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:17:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:17:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:17:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:17:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 05:17:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:17:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:17:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:17:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 05:17:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:17:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:17:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:17:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:17:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 05:17:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-29 05:17:24,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:17:24,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603222575] [2023-11-29 05:17:24,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603222575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:17:24,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:17:24,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:17:24,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286224876] [2023-11-29 05:17:24,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:17:24,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:17:24,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:17:24,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:17:24,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:17:24,333 INFO L87 Difference]: Start difference. First operand 277 states and 332 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 05:17:25,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:17:25,678 INFO L93 Difference]: Finished difference Result 285 states and 340 transitions. [2023-11-29 05:17:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:17:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2023-11-29 05:17:25,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:17:25,681 INFO L225 Difference]: With dead ends: 285 [2023-11-29 05:17:25,681 INFO L226 Difference]: Without dead ends: 283 [2023-11-29 05:17:25,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:17:25,681 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 48 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:17:25,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 329 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 05:17:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-29 05:17:25,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2023-11-29 05:17:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 189 states have (on average 1.1164021164021165) internal successors, (211), 196 states have internal predecessors, (211), 56 states have call successors, (56), 32 states have call predecessors, (56), 36 states have return successors, (70), 53 states have call predecessors, (70), 52 states have call successors, (70) [2023-11-29 05:17:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 337 transitions. [2023-11-29 05:17:25,711 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 337 transitions. Word has length 103 [2023-11-29 05:17:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:17:25,712 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 337 transitions. [2023-11-29 05:17:25,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 05:17:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 337 transitions. [2023-11-29 05:17:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 05:17:25,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:17:25,713 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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] [2023-11-29 05:17:25,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:17:25,713 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:17:25,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:17:25,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2143852135, now seen corresponding path program 1 times [2023-11-29 05:17:25,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:17:25,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025936608] [2023-11-29 05:17:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:25,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:17:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:17:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:17:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:17:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:17:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:17:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:17:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:17:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:17:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 05:17:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:17:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:17:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-29 05:17:28,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:17:28,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025936608] [2023-11-29 05:17:28,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025936608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:17:28,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479942226] [2023-11-29 05:17:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:28,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:17:28,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:17:28,664 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:17:28,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:17:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:29,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 05:17:29,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:17:29,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:17:57,974 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 05:17:57,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-29 05:17:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 05:17:59,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:17:59,684 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 05:17:59,684 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 19 treesize of output 18 [2023-11-29 05:18:03,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479942226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:03,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:18:03,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 41 [2023-11-29 05:18:03,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617025228] [2023-11-29 05:18:03,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:18:03,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 05:18:03,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:03,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 05:18:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2331, Unknown=13, NotChecked=0, Total=2550 [2023-11-29 05:18:03,979 INFO L87 Difference]: Start difference. First operand 282 states and 337 transitions. Second operand has 41 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 35 states have internal predecessors, (94), 17 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (24), 16 states have call predecessors, (24), 14 states have call successors, (24) [2023-11-29 05:18:08,453 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 05:18:15,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:18:20,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:18:24,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:18:28,167 WARN L539 Checker$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 05:18:36,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:18:41,470 WARN L539 Checker$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 05:18:47,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:18:51,615 WARN L539 Checker$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 05:18:56,086 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 05:18:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:56,367 INFO L93 Difference]: Finished difference Result 567 states and 677 transitions. [2023-11-29 05:18:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 05:18:56,368 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 35 states have internal predecessors, (94), 17 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (24), 16 states have call predecessors, (24), 14 states have call successors, (24) Word has length 101 [2023-11-29 05:18:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:56,371 INFO L225 Difference]: With dead ends: 567 [2023-11-29 05:18:56,372 INFO L226 Difference]: Without dead ends: 482 [2023-11-29 05:18:56,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 111 SyntacticMatches, 13 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2352 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=722, Invalid=7096, Unknown=14, NotChecked=0, Total=7832 [2023-11-29 05:18:56,376 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 272 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 218 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 3125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:56,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 517 Invalid, 3125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2897 Invalid, 10 Unknown, 0 Unchecked, 46.5s Time] [2023-11-29 05:18:56,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-29 05:18:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 351. [2023-11-29 05:18:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 238 states have (on average 1.1050420168067228) internal successors, (263), 246 states have internal predecessors, (263), 67 states have call successors, (67), 40 states have call predecessors, (67), 45 states have return successors, (82), 64 states have call predecessors, (82), 63 states have call successors, (82) [2023-11-29 05:18:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 412 transitions. [2023-11-29 05:18:56,428 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 412 transitions. Word has length 101 [2023-11-29 05:18:56,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:56,428 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 412 transitions. [2023-11-29 05:18:56,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 35 states have internal predecessors, (94), 17 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (24), 16 states have call predecessors, (24), 14 states have call successors, (24) [2023-11-29 05:18:56,428 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 412 transitions. [2023-11-29 05:18:56,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 05:18:56,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:56,429 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 4, 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] [2023-11-29 05:18:56,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:18:56,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:56,630 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:56,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:56,630 INFO L85 PathProgramCache]: Analyzing trace with hash -130091779, now seen corresponding path program 1 times [2023-11-29 05:18:56,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:56,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405223022] [2023-11-29 05:18:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:56,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:18:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:18:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:18:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 05:18:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:18:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:18:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:18:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:18:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 05:18:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:18:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:18:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:18:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:18:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 05:18:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-29 05:18:57,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:57,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405223022] [2023-11-29 05:18:57,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405223022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:57,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646260445] [2023-11-29 05:18:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:57,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:57,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:57,842 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:57,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:18:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:58,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 2624 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 05:18:58,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:58,326 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 05:18:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 63 proven. 31 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 05:18:58,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:18:59,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646260445] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:59,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:18:59,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 20 [2023-11-29 05:18:59,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138640523] [2023-11-29 05:18:59,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:18:59,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:18:59,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:59,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:18:59,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:18:59,176 INFO L87 Difference]: Start difference. First operand 351 states and 412 transitions. Second operand has 20 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 7 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-29 05:19:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:03,027 INFO L93 Difference]: Finished difference Result 376 states and 436 transitions. [2023-11-29 05:19:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:19:03,027 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 7 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) Word has length 107 [2023-11-29 05:19:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:03,029 INFO L225 Difference]: With dead ends: 376 [2023-11-29 05:19:03,029 INFO L226 Difference]: Without dead ends: 343 [2023-11-29 05:19:03,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 150 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 05:19:03,030 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 169 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:03,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 305 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 05:19:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-29 05:19:03,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 335. [2023-11-29 05:19:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 222 states have (on average 1.0855855855855856) internal successors, (241), 229 states have internal predecessors, (241), 69 states have call successors, (69), 40 states have call predecessors, (69), 43 states have return successors, (80), 65 states have call predecessors, (80), 63 states have call successors, (80) [2023-11-29 05:19:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 390 transitions. [2023-11-29 05:19:03,084 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 390 transitions. Word has length 107 [2023-11-29 05:19:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:03,085 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 390 transitions. [2023-11-29 05:19:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 7 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-29 05:19:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 390 transitions. [2023-11-29 05:19:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:19:03,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:03,086 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:03,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 05:19:03,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 05:19:03,287 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:03,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:03,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1793904146, now seen corresponding path program 1 times [2023-11-29 05:19:03,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:03,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539782670] [2023-11-29 05:19:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:03,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:19:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:19:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 05:19:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 05:19:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 05:19:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:19:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 05:19:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 05:19:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:19:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:19:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:19:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:19:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 05:19:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 05:19:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-29 05:19:04,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539782670] [2023-11-29 05:19:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539782670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:04,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:04,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:19:04,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174180203] [2023-11-29 05:19:04,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:04,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:19:04,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:04,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:19:04,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:19:04,689 INFO L87 Difference]: Start difference. First operand 335 states and 390 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-29 05:19:06,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:06,428 INFO L93 Difference]: Finished difference Result 346 states and 401 transitions. [2023-11-29 05:19:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:19:06,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 113 [2023-11-29 05:19:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:06,430 INFO L225 Difference]: With dead ends: 346 [2023-11-29 05:19:06,430 INFO L226 Difference]: Without dead ends: 222 [2023-11-29 05:19:06,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:19:06,431 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 66 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:06,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 255 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 05:19:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-29 05:19:06,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2023-11-29 05:19:06,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 149 states have (on average 1.1140939597315436) internal successors, (166), 154 states have internal predecessors, (166), 44 states have call successors, (44), 26 states have call predecessors, (44), 28 states have return successors, (54), 41 states have call predecessors, (54), 38 states have call successors, (54) [2023-11-29 05:19:06,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 264 transitions. [2023-11-29 05:19:06,461 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 264 transitions. Word has length 113 [2023-11-29 05:19:06,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:06,461 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 264 transitions. [2023-11-29 05:19:06,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-29 05:19:06,461 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 264 transitions. [2023-11-29 05:19:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 05:19:06,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:06,462 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:19:06,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:19:06,463 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:06,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:06,463 INFO L85 PathProgramCache]: Analyzing trace with hash 692414363, now seen corresponding path program 1 times [2023-11-29 05:19:06,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:06,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139251736] [2023-11-29 05:19:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:06,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:19:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:19:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:19:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:19:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:19:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:19:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:19:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 05:19:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:19:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:19:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 05:19:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 05:19:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 05:19:08,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:08,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139251736] [2023-11-29 05:19:08,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139251736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:19:08,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175651088] [2023-11-29 05:19:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:08,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:19:08,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:19:08,685 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:19:08,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:19:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:09,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 05:19:09,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:19:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-29 05:19:09,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:19:09,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175651088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:09,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:19:09,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 24 [2023-11-29 05:19:09,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638703489] [2023-11-29 05:19:09,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:09,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:19:09,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:09,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:19:09,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:19:09,657 INFO L87 Difference]: Start difference. First operand 222 states and 264 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:19:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:11,159 INFO L93 Difference]: Finished difference Result 409 states and 481 transitions. [2023-11-29 05:19:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:19:11,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2023-11-29 05:19:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:11,161 INFO L225 Difference]: With dead ends: 409 [2023-11-29 05:19:11,161 INFO L226 Difference]: Without dead ends: 315 [2023-11-29 05:19:11,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 133 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:19:11,163 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 51 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:11,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 359 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 05:19:11,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-29 05:19:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 289. [2023-11-29 05:19:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 196 states have (on average 1.1173469387755102) internal successors, (219), 204 states have internal predecessors, (219), 54 states have call successors, (54), 33 states have call predecessors, (54), 38 states have return successors, (69), 51 states have call predecessors, (69), 48 states have call successors, (69) [2023-11-29 05:19:11,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 342 transitions. [2023-11-29 05:19:11,228 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 342 transitions. Word has length 114 [2023-11-29 05:19:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:11,229 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 342 transitions. [2023-11-29 05:19:11,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:19:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 342 transitions. [2023-11-29 05:19:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 05:19:11,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:11,230 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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 05:19:11,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:19:11,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:19:11,431 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:11,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:11,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1070896601, now seen corresponding path program 1 times [2023-11-29 05:19:11,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:11,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054641548] [2023-11-29 05:19:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:11,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:19:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:19:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:19:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:19:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:19:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:19:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:19:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 05:19:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:19:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:19:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:19:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 05:19:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-29 05:19:13,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:13,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054641548] [2023-11-29 05:19:13,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054641548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:13,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:13,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 05:19:13,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292010479] [2023-11-29 05:19:13,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:13,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:19:13,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:13,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:19:13,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:19:13,791 INFO L87 Difference]: Start difference. First operand 289 states and 342 transitions. Second operand has 20 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 10 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 05:19:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:16,265 INFO L93 Difference]: Finished difference Result 420 states and 495 transitions. [2023-11-29 05:19:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:19:16,266 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 10 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) Word has length 117 [2023-11-29 05:19:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:16,267 INFO L225 Difference]: With dead ends: 420 [2023-11-29 05:19:16,267 INFO L226 Difference]: Without dead ends: 289 [2023-11-29 05:19:16,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:19:16,269 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 90 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:16,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 227 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 05:19:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-29 05:19:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-29 05:19:16,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 196 states have (on average 1.1173469387755102) internal successors, (219), 204 states have internal predecessors, (219), 54 states have call successors, (54), 33 states have call predecessors, (54), 38 states have return successors, (66), 51 states have call predecessors, (66), 48 states have call successors, (66) [2023-11-29 05:19:16,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 339 transitions. [2023-11-29 05:19:16,308 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 339 transitions. Word has length 117 [2023-11-29 05:19:16,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:16,308 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 339 transitions. [2023-11-29 05:19:16,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 10 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 10 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 05:19:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 339 transitions. [2023-11-29 05:19:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 05:19:16,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:16,310 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:19:16,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:19:16,310 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:16,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1855149760, now seen corresponding path program 1 times [2023-11-29 05:19:16,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:16,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101642025] [2023-11-29 05:19:16,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:16,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:19:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:19:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:19:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:19:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:19:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:19:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:19:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 05:19:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 05:19:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:19:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:19:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 05:19:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-29 05:19:17,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:17,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101642025] [2023-11-29 05:19:17,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101642025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:17,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:17,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 05:19:17,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001512693] [2023-11-29 05:19:17,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:17,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:19:17,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:19:17,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:19:17,337 INFO L87 Difference]: Start difference. First operand 289 states and 339 transitions. Second operand has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 05:19:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:19,230 INFO L93 Difference]: Finished difference Result 303 states and 352 transitions. [2023-11-29 05:19:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:19:19,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2023-11-29 05:19:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:19,233 INFO L225 Difference]: With dead ends: 303 [2023-11-29 05:19:19,233 INFO L226 Difference]: Without dead ends: 301 [2023-11-29 05:19:19,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:19:19,234 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 82 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:19,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 482 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 05:19:19,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-29 05:19:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 296. [2023-11-29 05:19:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 202 states have (on average 1.113861386138614) internal successors, (225), 210 states have internal predecessors, (225), 53 states have call successors, (53), 35 states have call predecessors, (53), 40 states have return successors, (65), 50 states have call predecessors, (65), 47 states have call successors, (65) [2023-11-29 05:19:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 343 transitions. [2023-11-29 05:19:19,281 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 343 transitions. Word has length 119 [2023-11-29 05:19:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:19,281 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 343 transitions. [2023-11-29 05:19:19,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 05:19:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 343 transitions. [2023-11-29 05:19:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 05:19:19,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:19,283 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 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] [2023-11-29 05:19:19,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:19:19,283 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:19,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:19,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1104260409, now seen corresponding path program 1 times [2023-11-29 05:19:19,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:19,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525677245] [2023-11-29 05:19:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:19,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:19:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:19:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:19:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:19:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:19:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:19:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:19:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:19:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:19:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:19:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:19:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:19:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:19:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 05:19:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-29 05:19:20,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:20,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525677245] [2023-11-29 05:19:20,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525677245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:20,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:20,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 05:19:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177708265] [2023-11-29 05:19:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:20,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:19:20,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:19:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:19:20,400 INFO L87 Difference]: Start difference. First operand 296 states and 343 transitions. Second operand has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 05:19:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:22,462 INFO L93 Difference]: Finished difference Result 302 states and 348 transitions. [2023-11-29 05:19:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:19:22,462 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 131 [2023-11-29 05:19:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:22,464 INFO L225 Difference]: With dead ends: 302 [2023-11-29 05:19:22,464 INFO L226 Difference]: Without dead ends: 300 [2023-11-29 05:19:22,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:19:22,465 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 116 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:22,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 453 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 05:19:22,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-29 05:19:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 279. [2023-11-29 05:19:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 192 states have (on average 1.0989583333333333) internal successors, (211), 200 states have internal predecessors, (211), 48 states have call successors, (48), 32 states have call predecessors, (48), 38 states have return successors, (62), 46 states have call predecessors, (62), 44 states have call successors, (62) [2023-11-29 05:19:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 321 transitions. [2023-11-29 05:19:22,501 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 321 transitions. Word has length 131 [2023-11-29 05:19:22,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:22,501 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 321 transitions. [2023-11-29 05:19:22,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 05:19:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 321 transitions. [2023-11-29 05:19:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 05:19:22,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:22,503 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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] [2023-11-29 05:19:22,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:19:22,503 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:22,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1371055091, now seen corresponding path program 1 times [2023-11-29 05:19:22,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:22,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94260650] [2023-11-29 05:19:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:22,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:19:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:19:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:19:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:19:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:19:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:19:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:19:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:19:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:19:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:19:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:19:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:19:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:19:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:19:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 05:19:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 05:19:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 05:19:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-29 05:19:23,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:23,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94260650] [2023-11-29 05:19:23,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94260650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:19:23,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073455970] [2023-11-29 05:19:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:23,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:19:23,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:19:23,603 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:19:23,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:19:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:24,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 2807 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 05:19:24,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:19:24,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:19:36,692 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 05:19:40,804 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 05:19:44,900 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 05:19:49,034 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 05:19:49,125 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 05:19:49,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-29 05:19:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 65 proven. 59 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 05:19:49,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:19:50,521 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 05:19:50,522 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 19 treesize of output 18 [2023-11-29 05:19:50,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073455970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:19:50,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:19:50,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 23] total 33 [2023-11-29 05:19:50,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589591374] [2023-11-29 05:19:50,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:19:50,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 05:19:50,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:50,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 05:19:50,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1477, Unknown=12, NotChecked=0, Total=1640 [2023-11-29 05:19:50,652 INFO L87 Difference]: Start difference. First operand 279 states and 321 transitions. Second operand has 33 states, 32 states have (on average 3.625) internal successors, (116), 30 states have internal predecessors, (116), 12 states have call successors, (38), 7 states have call predecessors, (38), 8 states have return successors, (37), 13 states have call predecessors, (37), 11 states have call successors, (37) [2023-11-29 05:19:56,504 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 05:20:03,415 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 05:20:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:22,636 INFO L93 Difference]: Finished difference Result 398 states and 458 transitions. [2023-11-29 05:20:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 05:20:22,636 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.625) internal successors, (116), 30 states have internal predecessors, (116), 12 states have call successors, (38), 7 states have call predecessors, (38), 8 states have return successors, (37), 13 states have call predecessors, (37), 11 states have call successors, (37) Word has length 142 [2023-11-29 05:20:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:22,638 INFO L225 Difference]: With dead ends: 398 [2023-11-29 05:20:22,638 INFO L226 Difference]: Without dead ends: 342 [2023-11-29 05:20:22,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 13 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=711, Invalid=5434, Unknown=17, NotChecked=0, Total=6162 [2023-11-29 05:20:22,641 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 214 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 3165 mSolverCounterSat, 170 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 3337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 3165 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:22,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 621 Invalid, 3337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 3165 Invalid, 2 Unknown, 0 Unchecked, 17.7s Time] [2023-11-29 05:20:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-29 05:20:22,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 311. [2023-11-29 05:20:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 215 states have (on average 1.0930232558139534) internal successors, (235), 221 states have internal predecessors, (235), 54 states have call successors, (54), 36 states have call predecessors, (54), 41 states have return successors, (70), 53 states have call predecessors, (70), 50 states have call successors, (70) [2023-11-29 05:20:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 359 transitions. [2023-11-29 05:20:22,697 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 359 transitions. Word has length 142 [2023-11-29 05:20:22,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:22,697 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 359 transitions. [2023-11-29 05:20:22,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.625) internal successors, (116), 30 states have internal predecessors, (116), 12 states have call successors, (38), 7 states have call predecessors, (38), 8 states have return successors, (37), 13 states have call predecessors, (37), 11 states have call successors, (37) [2023-11-29 05:20:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 359 transitions. [2023-11-29 05:20:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 05:20:22,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:22,699 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:20:22,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:20:22,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 05:20:22,900 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:22,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2125508508, now seen corresponding path program 1 times [2023-11-29 05:20:22,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:22,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044932858] [2023-11-29 05:20:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:22,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:20:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:20:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:20:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:20:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:20:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:20:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:20:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:20:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:20:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:20:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:20:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:20:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:20:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 05:20:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 05:20:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:24,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 05:20:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 05:20:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-29 05:20:24,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:24,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044932858] [2023-11-29 05:20:24,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044932858] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:20:24,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887898030] [2023-11-29 05:20:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:24,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:24,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:20:24,054 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:20:24,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:20:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:24,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:20:24,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:20:24,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 05:20:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 05:20:24,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:20:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887898030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:24,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:20:24,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 16 [2023-11-29 05:20:24,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64497952] [2023-11-29 05:20:24,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:24,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:20:24,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:24,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:20:24,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:20:24,693 INFO L87 Difference]: Start difference. First operand 311 states and 359 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-29 05:20:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:25,914 INFO L93 Difference]: Finished difference Result 313 states and 360 transitions. [2023-11-29 05:20:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:20:25,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 148 [2023-11-29 05:20:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:25,916 INFO L225 Difference]: With dead ends: 313 [2023-11-29 05:20:25,916 INFO L226 Difference]: Without dead ends: 283 [2023-11-29 05:20:25,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 179 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:20:25,917 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 27 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:25,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 433 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 05:20:25,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-29 05:20:25,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2023-11-29 05:20:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 194 states have (on average 1.092783505154639) internal successors, (212), 201 states have internal predecessors, (212), 47 states have call successors, (47), 31 states have call predecessors, (47), 38 states have return successors, (56), 47 states have call predecessors, (56), 45 states have call successors, (56) [2023-11-29 05:20:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 315 transitions. [2023-11-29 05:20:25,953 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 315 transitions. Word has length 148 [2023-11-29 05:20:25,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:25,953 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 315 transitions. [2023-11-29 05:20:25,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-29 05:20:25,953 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 315 transitions. [2023-11-29 05:20:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 05:20:25,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:25,954 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:20:25,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:20:26,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 05:20:26,155 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:26,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:26,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1726815963, now seen corresponding path program 1 times [2023-11-29 05:20:26,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:26,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136872211] [2023-11-29 05:20:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:20:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:20:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:20:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:20:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:20:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:20:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:20:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:20:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:20:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 05:20:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:20:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:20:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:20:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 05:20:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 05:20:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 05:20:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-29 05:20:27,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:27,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136872211] [2023-11-29 05:20:27,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136872211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:27,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:20:27,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 05:20:27,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758167723] [2023-11-29 05:20:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:27,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:20:27,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:27,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:20:27,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:20:27,280 INFO L87 Difference]: Start difference. First operand 280 states and 315 transitions. Second operand has 15 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-29 05:20:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:29,159 INFO L93 Difference]: Finished difference Result 288 states and 323 transitions. [2023-11-29 05:20:29,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:20:29,159 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-11-29 05:20:29,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:29,161 INFO L225 Difference]: With dead ends: 288 [2023-11-29 05:20:29,161 INFO L226 Difference]: Without dead ends: 286 [2023-11-29 05:20:29,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:20:29,162 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 78 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:29,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 461 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 05:20:29,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-29 05:20:29,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2023-11-29 05:20:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 197 states have (on average 1.0913705583756346) internal successors, (215), 204 states have internal predecessors, (215), 48 states have call successors, (48), 32 states have call predecessors, (48), 39 states have return successors, (57), 48 states have call predecessors, (57), 46 states have call successors, (57) [2023-11-29 05:20:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 320 transitions. [2023-11-29 05:20:29,201 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 320 transitions. Word has length 150 [2023-11-29 05:20:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:29,202 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 320 transitions. [2023-11-29 05:20:29,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-29 05:20:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 320 transitions. [2023-11-29 05:20:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 05:20:29,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:29,203 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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] [2023-11-29 05:20:29,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 05:20:29,203 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:29,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash 327263263, now seen corresponding path program 1 times [2023-11-29 05:20:29,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:29,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003218672] [2023-11-29 05:20:29,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:29,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:20:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:20:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:20:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:20:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:20:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:20:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:20:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:20:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:20:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:20:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 05:20:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 05:20:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:20:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:20:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 05:20:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 05:20:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-11-29 05:20:31,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:31,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003218672] [2023-11-29 05:20:31,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003218672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:20:31,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:20:31,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 05:20:31,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296188433] [2023-11-29 05:20:31,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:20:31,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:20:31,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:31,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:20:31,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:20:31,373 INFO L87 Difference]: Start difference. First operand 285 states and 320 transitions. Second operand has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-29 05:20:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:34,144 INFO L93 Difference]: Finished difference Result 302 states and 338 transitions. [2023-11-29 05:20:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:20:34,144 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) Word has length 157 [2023-11-29 05:20:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:34,145 INFO L225 Difference]: With dead ends: 302 [2023-11-29 05:20:34,146 INFO L226 Difference]: Without dead ends: 285 [2023-11-29 05:20:34,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:20:34,147 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 69 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:34,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 405 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 05:20:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-29 05:20:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 281. [2023-11-29 05:20:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 194 states have (on average 1.0876288659793814) internal successors, (211), 200 states have internal predecessors, (211), 48 states have call successors, (48), 32 states have call predecessors, (48), 38 states have return successors, (56), 48 states have call predecessors, (56), 46 states have call successors, (56) [2023-11-29 05:20:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 315 transitions. [2023-11-29 05:20:34,184 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 315 transitions. Word has length 157 [2023-11-29 05:20:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:34,184 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 315 transitions. [2023-11-29 05:20:34,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-29 05:20:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 315 transitions. [2023-11-29 05:20:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 05:20:34,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:34,186 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2023-11-29 05:20:34,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 05:20:34,187 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:34,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:34,187 INFO L85 PathProgramCache]: Analyzing trace with hash -734097421, now seen corresponding path program 1 times [2023-11-29 05:20:34,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:34,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319668372] [2023-11-29 05:20:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:34,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:34,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:20:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:20:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:20:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:20:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:34,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 05:20:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:20:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:20:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 05:20:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 05:20:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 05:20:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 05:20:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 05:20:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 05:20:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 05:20:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:20:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 05:20:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 05:20:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 05:20:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 49 proven. 23 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-29 05:20:35,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:35,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319668372] [2023-11-29 05:20:35,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319668372] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:20:35,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49562014] [2023-11-29 05:20:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:35,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:35,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:20:35,479 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:20:35,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16bb8055-8eef-4a1b-893b-ee744346b42c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:20:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:35,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 2874 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-29 05:20:35,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:20:36,110 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 11 treesize of output 7 [2023-11-29 05:20:36,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 05:20:36,788 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 05:20:36,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-29 05:20:36,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-29 05:20:36,828 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 05:20:36,882 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 05:20:36,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-29 05:20:36,902 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 05:20:36,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-29 05:20:53,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2023-11-29 05:20:53,057 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 05:20:53,091 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 05:20:53,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-29 05:20:53,115 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2023-11-29 05:20:53,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 32 [2023-11-29 05:21:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 95 proven. 81 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-29 05:21:31,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:21:56,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49562014] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:21:56,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:21:56,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25] total 35 [2023-11-29 05:21:56,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528104627] [2023-11-29 05:21:56,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:21:56,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 05:21:56,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:21:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 05:21:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1476, Unknown=22, NotChecked=0, Total=1640 [2023-11-29 05:21:56,871 INFO L87 Difference]: Start difference. First operand 281 states and 315 transitions. Second operand has 35 states, 33 states have (on average 3.9696969696969697) internal successors, (131), 31 states have internal predecessors, (131), 16 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (38), 16 states have call predecessors, (38), 16 states have call successors, (38) [2023-11-29 05:22:07,178 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 05:22:15,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:22:24,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:22:33,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:22:42,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:22:51,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:22:59,594 WARN L539 Checker$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 05:23:03,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:23:07,802 WARN L539 Checker$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 05:23:11,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:23:16,003 WARN L539 Checker$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 05:23:26,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:23:30,791 WARN L539 Checker$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 05:23:39,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:23:43,237 WARN L539 Checker$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 05:23:47,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:23:51,499 WARN L539 Checker$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 05:23:55,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:23:59,744 WARN L539 Checker$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 05:24:03,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:24:07,918 WARN L539 Checker$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 05:24:11,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:24:16,109 WARN L539 Checker$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 05:24:20,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:24:24,208 WARN L539 Checker$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 05:24:28,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:24:32,392 WARN L539 Checker$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 05:24:40,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:24:44,742 WARN L539 Checker$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 05:24:48,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:24:52,964 WARN L539 Checker$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 05:24:57,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:25:01,091 WARN L539 Checker$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 05:25:05,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:25:09,294 WARN L539 Checker$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 05:25:17,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:25:21,629 WARN L539 Checker$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 05:25:25,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:25:29,788 WARN L539 Checker$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 05:25:33,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:25:37,949 WARN L539 Checker$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 05:25:41,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:25:46,238 WARN L539 Checker$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 05:25:50,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:26:04,314 WARN L539 Checker$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 05:26:08,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:26:12,574 WARN L539 Checker$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 05:26:20,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:26:29,316 WARN L539 Checker$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 05:26:38,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:26:46,950 WARN L539 Checker$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 05:26:51,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:26:55,252 WARN L539 Checker$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 05:27:03,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:27:11,933 WARN L539 Checker$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 05:27:20,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:27:24,618 WARN L539 Checker$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 05:27:28,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:27:32,837 WARN L539 Checker$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 05:27:36,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:27:40,999 WARN L539 Checker$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 05:27:45,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:27:49,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:27:53,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:28:01,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]