./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/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_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/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_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:37:12,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:37:12,940 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 05:37:12,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:37:12,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:37:12,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:37:12,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:37:12,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:37:12,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:37:12,973 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:37:12,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:37:12,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:37:12,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:37:12,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:37:12,975 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:37:12,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:37:12,977 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:37:12,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:37:12,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:37:12,978 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:37:12,978 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:37:12,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:37:12,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:37:12,981 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:37:12,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:37:12,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:37:12,983 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:37:12,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:37:12,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:37:12,984 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:37:12,984 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:37:12,985 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:37:12,985 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:37:12,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:37:12,986 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:37:12,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:37:12,987 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:37:12,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:37:12,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:37:12,988 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_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2023-11-29 05:37:13,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:37:13,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:37:13,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:37:13,222 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:37:13,223 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:37:13,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2023-11-29 05:37:15,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:37:16,421 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:37:16,422 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2023-11-29 05:37:16,457 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/data/123e040ed/e5a2f761c2744c80816da9d7d92c13c6/FLAG3125badd2 [2023-11-29 05:37:16,472 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/data/123e040ed/e5a2f761c2744c80816da9d7d92c13c6 [2023-11-29 05:37:16,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:37:16,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:37:16,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:37:16,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:37:16,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:37:16,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:37:16" (1/1) ... [2023-11-29 05:37:16,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ddabd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:16, skipping insertion in model container [2023-11-29 05:37:16,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:37:16" (1/1) ... [2023-11-29 05:37:16,582 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:37:16,847 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_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2023-11-29 05:37:16,856 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_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2023-11-29 05:37:17,772 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,773 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,775 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,776 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,795 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,796 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,798 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,799 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,800 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:17,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,320 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 05:37:18,322 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 05:37:18,323 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 05:37:18,325 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 05:37:18,327 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 05:37:18,327 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 05:37:18,328 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 05:37:18,329 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 05:37:18,330 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 05:37:18,331 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 05:37:18,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,497 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,503 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,564 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,565 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,565 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,566 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,566 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,567 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,567 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,568 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,568 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,569 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,569 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,570 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,570 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,573 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,574 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,574 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,575 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,578 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,579 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,587 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,588 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,589 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:37:18,639 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:37:18,653 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_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2023-11-29 05:37:18,654 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_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2023-11-29 05:37:18,696 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,697 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,697 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,697 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,698 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,705 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,705 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,706 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,707 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,708 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,709 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,709 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,710 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,748 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 05:37:18,749 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 05:37:18,750 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 05:37:18,751 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 05:37:18,752 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 05:37:18,752 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 05:37:18,753 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 05:37:18,753 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 05:37:18,754 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 05:37:18,754 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 05:37:18,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,790 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,795 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,801 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2023-11-29 05:37:18,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,822 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,822 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,823 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,823 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,823 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,824 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,824 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,824 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,825 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,825 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,825 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,826 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,828 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,829 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,834 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,835 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,835 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:37:18,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:37:19,114 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,114 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,114 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,114 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,114 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,114 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,114 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,115 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,115 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,115 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,115 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,115 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,115 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,115 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,115 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:37:19,122 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:37:19,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19 WrapperNode [2023-11-29 05:37:19,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:37:19,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:37:19,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:37:19,124 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:37:19,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,275 INFO L138 Inliner]: procedures = 696, calls = 1906, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 845 [2023-11-29 05:37:19,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:37:19,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:37:19,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:37:19,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:37:19,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,371 INFO L175 MemorySlicer]: Split 341 memory accesses to 7 slices as follows [15, 2, 3, 236, 18, 64, 3]. 69 percent of accesses are in the largest equivalence class. The 262 initializations are split as follows [4, 2, 1, 236, 5, 11, 3]. The 14 writes are split as follows [3, 0, 1, 0, 6, 4, 0]. [2023-11-29 05:37:19,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:37:19,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:37:19,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:37:19,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:37:19,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (1/1) ... [2023-11-29 05:37:19,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:37:19,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:19,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:37:19,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:37:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-29 05:37:19,519 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-29 05:37:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-29 05:37:19,519 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-29 05:37:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:37:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-29 05:37:19,519 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-29 05:37:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-29 05:37:19,520 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-29 05:37:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-29 05:37:19,520 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-29 05:37:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:37:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:37:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:37:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:37:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:37:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 05:37:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 05:37:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-29 05:37:19,521 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-29 05:37:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 05:37:19,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 05:37:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:37:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:37:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 05:37:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 05:37:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 05:37:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 05:37:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 05:37:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 05:37:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 05:37:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-29 05:37:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-29 05:37:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:37:19,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:37:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 05:37:19,523 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 05:37:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-29 05:37:19,523 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-29 05:37:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-29 05:37:19,523 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-29 05:37:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-29 05:37:19,523 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-29 05:37:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-29 05:37:19,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-29 05:37:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-29 05:37:19,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-29 05:37:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:37:19,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:37:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-29 05:37:19,524 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-29 05:37:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:37:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 05:37:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 05:37:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 05:37:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 05:37:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 05:37:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 05:37:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 05:37:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2023-11-29 05:37:19,525 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2023-11-29 05:37:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 05:37:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 05:37:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 05:37:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 05:37:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 05:37:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 05:37:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-29 05:37:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-29 05:37:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-29 05:37:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-29 05:37:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-29 05:37:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-29 05:37:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-29 05:37:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:37:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:37:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:37:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:37:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:37:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 05:37:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 05:37:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-29 05:37:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-29 05:37:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-29 05:37:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-29 05:37:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-29 05:37:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-29 05:37:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:37:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:37:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:37:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:37:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:37:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 05:37:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 05:37:19,831 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:37:19,834 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:37:20,855 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:37:21,006 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:37:21,006 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 05:37:21,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:37:21 BoogieIcfgContainer [2023-11-29 05:37:21,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:37:21,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:37:21,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:37:21,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:37:21,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:37:16" (1/3) ... [2023-11-29 05:37:21,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45933b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:37:21, skipping insertion in model container [2023-11-29 05:37:21,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:37:19" (2/3) ... [2023-11-29 05:37:21,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45933b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:37:21, skipping insertion in model container [2023-11-29 05:37:21,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:37:21" (3/3) ... [2023-11-29 05:37:21,016 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2023-11-29 05:37:21,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:37:21,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:37:21,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:37:21,100 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;@2915fb1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:37:21,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:37:21,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 168 states have (on average 1.2738095238095237) internal successors, (214), 169 states have internal predecessors, (214), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-29 05:37:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 05:37:21,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:21,126 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:21,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:21,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:21,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1471517544, now seen corresponding path program 1 times [2023-11-29 05:37:21,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:21,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834288689] [2023-11-29 05:37:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:21,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 05:37:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:37:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:37:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 05:37:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:37:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:37:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:37:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:37:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:37:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:37:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:37:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:37:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:37:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:37:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 05:37:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:37:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:37:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:37:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:37:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:37:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 05:37:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 05:37:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 05:37:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 05:37:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:21,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 05:37:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 05:37:22,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:22,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834288689] [2023-11-29 05:37:22,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834288689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:22,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:22,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:37:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547968427] [2023-11-29 05:37:22,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:22,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:37:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:37:22,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:37:22,055 INFO L87 Difference]: Start difference. First operand has 297 states, 168 states have (on average 1.2738095238095237) internal successors, (214), 169 states have internal predecessors, (214), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-29 05:37:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:24,320 INFO L93 Difference]: Finished difference Result 691 states and 1148 transitions. [2023-11-29 05:37:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:37:24,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 142 [2023-11-29 05:37:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:24,339 INFO L225 Difference]: With dead ends: 691 [2023-11-29 05:37:24,339 INFO L226 Difference]: Without dead ends: 412 [2023-11-29 05:37:24,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:37:24,350 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 238 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:24,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 322 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 05:37:24,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-11-29 05:37:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 295. [2023-11-29 05:37:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 167 states have (on average 1.2335329341317365) internal successors, (206), 168 states have internal predecessors, (206), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 05:37:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 413 transitions. [2023-11-29 05:37:24,444 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 413 transitions. Word has length 142 [2023-11-29 05:37:24,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:24,445 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 413 transitions. [2023-11-29 05:37:24,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-29 05:37:24,445 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 413 transitions. [2023-11-29 05:37:24,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 05:37:24,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:24,450 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:24,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:37:24,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:24,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:24,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1387246874, now seen corresponding path program 1 times [2023-11-29 05:37:24,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:24,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469832381] [2023-11-29 05:37:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:24,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:24,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 05:37:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:37:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:24,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:37:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 05:37:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:37:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:37:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:37:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:37:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:37:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:37:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:37:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:37:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:37:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:37:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 05:37:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:37:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 05:37:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:37:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 05:37:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:37:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 05:37:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 05:37:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 05:37:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 05:37:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 05:37:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-29 05:37:25,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:25,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469832381] [2023-11-29 05:37:25,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469832381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:37:25,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116884039] [2023-11-29 05:37:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:25,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:25,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:25,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:25,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:37:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:25,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 2333 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:37:25,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-29 05:37:26,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:37:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116884039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:26,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:37:26,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 05:37:26,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040618380] [2023-11-29 05:37:26,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:26,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:37:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:26,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:37:26,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:37:26,060 INFO L87 Difference]: Start difference. First operand 295 states and 413 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-29 05:37:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:26,415 INFO L93 Difference]: Finished difference Result 549 states and 773 transitions. [2023-11-29 05:37:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:37:26,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 142 [2023-11-29 05:37:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:26,420 INFO L225 Difference]: With dead ends: 549 [2023-11-29 05:37:26,420 INFO L226 Difference]: Without dead ends: 297 [2023-11-29 05:37:26,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:37:26,423 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 46 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:26,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1394 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:37:26,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-29 05:37:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-11-29 05:37:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 168 states have (on average 1.2321428571428572) internal successors, (207), 170 states have internal predecessors, (207), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2023-11-29 05:37:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 418 transitions. [2023-11-29 05:37:26,461 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 418 transitions. Word has length 142 [2023-11-29 05:37:26,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:26,462 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 418 transitions. [2023-11-29 05:37:26,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-29 05:37:26,462 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 418 transitions. [2023-11-29 05:37:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 05:37:26,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:26,466 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:26,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:37:26,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:26,666 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:26,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1396222726, now seen corresponding path program 1 times [2023-11-29 05:37:26,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:26,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683203235] [2023-11-29 05:37:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:26,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 05:37:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:37:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 05:37:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 05:37:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 05:37:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 05:37:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 05:37:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:37:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:37:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:37:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:37:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:37:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 05:37:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 05:37:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 05:37:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 05:37:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 05:37:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 05:37:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 05:37:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:37:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 05:37:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 05:37:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 05:37:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:37:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 05:37:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-29 05:37:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-29 05:37:27,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:27,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683203235] [2023-11-29 05:37:27,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683203235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:37:27,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652716213] [2023-11-29 05:37:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:27,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:27,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:27,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:27,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:37:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:28,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 2383 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:37:28,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-29 05:37:28,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:37:28,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652716213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:28,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:37:28,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-29 05:37:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985664994] [2023-11-29 05:37:28,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:28,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:37:28,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:28,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:37:28,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:37:28,207 INFO L87 Difference]: Start difference. First operand 297 states and 418 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 05:37:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:28,747 INFO L93 Difference]: Finished difference Result 572 states and 820 transitions. [2023-11-29 05:37:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:37:28,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 150 [2023-11-29 05:37:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:28,751 INFO L225 Difference]: With dead ends: 572 [2023-11-29 05:37:28,751 INFO L226 Difference]: Without dead ends: 318 [2023-11-29 05:37:28,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:37:28,754 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 96 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:28,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2012 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:37:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-29 05:37:28,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 316. [2023-11-29 05:37:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 184 states have (on average 1.2445652173913044) internal successors, (229), 186 states have internal predecessors, (229), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-29 05:37:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 455 transitions. [2023-11-29 05:37:28,787 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 455 transitions. Word has length 150 [2023-11-29 05:37:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:28,787 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 455 transitions. [2023-11-29 05:37:28,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-29 05:37:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 455 transitions. [2023-11-29 05:37:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 05:37:28,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:28,790 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:28,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 05:37:28,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:28,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:28,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:28,991 INFO L85 PathProgramCache]: Analyzing trace with hash -964454930, now seen corresponding path program 1 times [2023-11-29 05:37:28,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:28,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158231628] [2023-11-29 05:37:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:28,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:29,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:37:29,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59964759] [2023-11-29 05:37:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:29,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:29,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:29,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:29,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:37:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:29,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:37:29,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-29 05:37:29,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:37:29,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:29,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158231628] [2023-11-29 05:37:29,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:37:29,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59964759] [2023-11-29 05:37:29,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59964759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:29,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:29,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:37:29,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954108095] [2023-11-29 05:37:29,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:29,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:37:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:37:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:37:29,782 INFO L87 Difference]: Start difference. First operand 316 states and 455 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-29 05:37:30,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:30,240 INFO L93 Difference]: Finished difference Result 595 states and 864 transitions. [2023-11-29 05:37:30,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:37:30,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 163 [2023-11-29 05:37:30,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:30,245 INFO L225 Difference]: With dead ends: 595 [2023-11-29 05:37:30,245 INFO L226 Difference]: Without dead ends: 322 [2023-11-29 05:37:30,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:37:30,248 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 65 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:30,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1710 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:37:30,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-29 05:37:30,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2023-11-29 05:37:30,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 184 states have (on average 1.2445652173913044) internal successors, (229), 186 states have internal predecessors, (229), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-29 05:37:30,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 455 transitions. [2023-11-29 05:37:30,281 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 455 transitions. Word has length 163 [2023-11-29 05:37:30,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:30,281 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 455 transitions. [2023-11-29 05:37:30,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-29 05:37:30,282 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 455 transitions. [2023-11-29 05:37:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-29 05:37:30,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:30,285 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:30,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:37:30,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:30,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:30,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:30,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1580314595, now seen corresponding path program 1 times [2023-11-29 05:37:30,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:30,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758741183] [2023-11-29 05:37:30,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:30,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:30,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:37:30,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274247131] [2023-11-29 05:37:30,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:30,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:30,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:30,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:30,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:37:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:31,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:37:31,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-29 05:37:31,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:37:31,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:31,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758741183] [2023-11-29 05:37:31,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:37:31,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274247131] [2023-11-29 05:37:31,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274247131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:31,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:31,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:37:31,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124074567] [2023-11-29 05:37:31,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:31,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:37:31,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:31,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:37:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:37:31,226 INFO L87 Difference]: Start difference. First operand 316 states and 455 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-11-29 05:37:31,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:31,784 INFO L93 Difference]: Finished difference Result 621 states and 902 transitions. [2023-11-29 05:37:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:37:31,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 179 [2023-11-29 05:37:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:31,789 INFO L225 Difference]: With dead ends: 621 [2023-11-29 05:37:31,789 INFO L226 Difference]: Without dead ends: 348 [2023-11-29 05:37:31,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:37:31,792 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 116 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:31,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 2296 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:37:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-29 05:37:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 316. [2023-11-29 05:37:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 184 states have (on average 1.2445652173913044) internal successors, (229), 186 states have internal predecessors, (229), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2023-11-29 05:37:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 455 transitions. [2023-11-29 05:37:31,822 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 455 transitions. Word has length 179 [2023-11-29 05:37:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:31,822 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 455 transitions. [2023-11-29 05:37:31,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2023-11-29 05:37:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 455 transitions. [2023-11-29 05:37:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 05:37:31,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:31,826 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:31,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:37:32,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:32,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:32,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:32,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1545876551, now seen corresponding path program 2 times [2023-11-29 05:37:32,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:32,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906773803] [2023-11-29 05:37:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:32,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:32,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:37:32,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353284523] [2023-11-29 05:37:32,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:37:32,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:32,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:32,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:32,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:37:32,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:37:32,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:37:32,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:37:32,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-29 05:37:32,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:37:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906773803] [2023-11-29 05:37:32,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:37:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353284523] [2023-11-29 05:37:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353284523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:32,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:37:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242500565] [2023-11-29 05:37:32,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:32,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:37:32,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:37:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:37:32,736 INFO L87 Difference]: Start difference. First operand 316 states and 455 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-29 05:37:33,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:33,220 INFO L93 Difference]: Finished difference Result 561 states and 817 transitions. [2023-11-29 05:37:33,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:37:33,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 192 [2023-11-29 05:37:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:33,224 INFO L225 Difference]: With dead ends: 561 [2023-11-29 05:37:33,224 INFO L226 Difference]: Without dead ends: 318 [2023-11-29 05:37:33,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:37:33,227 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 83 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:33,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2048 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:37:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-29 05:37:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-11-29 05:37:33,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 185 states have (on average 1.2432432432432432) internal successors, (230), 188 states have internal predecessors, (230), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2023-11-29 05:37:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 458 transitions. [2023-11-29 05:37:33,263 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 458 transitions. Word has length 192 [2023-11-29 05:37:33,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:33,263 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 458 transitions. [2023-11-29 05:37:33,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-29 05:37:33,264 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 458 transitions. [2023-11-29 05:37:33,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-29 05:37:33,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:33,267 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:33,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:37:33,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 05:37:33,468 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:33,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash 588105943, now seen corresponding path program 1 times [2023-11-29 05:37:33,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:33,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716338777] [2023-11-29 05:37:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:33,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:33,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:37:33,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740224113] [2023-11-29 05:37:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:33,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:33,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:33,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:33,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:37:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:34,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:37:34,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-29 05:37:34,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:37:34,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:34,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716338777] [2023-11-29 05:37:34,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:37:34,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740224113] [2023-11-29 05:37:34,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740224113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:34,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:34,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 05:37:34,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897583262] [2023-11-29 05:37:34,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:34,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:37:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:34,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:37:34,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:37:34,277 INFO L87 Difference]: Start difference. First operand 318 states and 458 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-29 05:37:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:34,809 INFO L93 Difference]: Finished difference Result 566 states and 824 transitions. [2023-11-29 05:37:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:37:34,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 213 [2023-11-29 05:37:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:34,813 INFO L225 Difference]: With dead ends: 566 [2023-11-29 05:37:34,813 INFO L226 Difference]: Without dead ends: 321 [2023-11-29 05:37:34,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:37:34,816 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 102 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:34,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 2345 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:37:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-29 05:37:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2023-11-29 05:37:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 186 states have (on average 1.2419354838709677) internal successors, (231), 189 states have internal predecessors, (231), 106 states have call successors, (106), 23 states have call predecessors, (106), 26 states have return successors, (122), 106 states have call predecessors, (122), 105 states have call successors, (122) [2023-11-29 05:37:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 459 transitions. [2023-11-29 05:37:34,842 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 459 transitions. Word has length 213 [2023-11-29 05:37:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:34,843 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 459 transitions. [2023-11-29 05:37:34,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-29 05:37:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 459 transitions. [2023-11-29 05:37:34,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-29 05:37:34,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:34,846 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:34,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:37:35,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:35,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:35,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash -708840440, now seen corresponding path program 1 times [2023-11-29 05:37:35,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:35,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217809158] [2023-11-29 05:37:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:35,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:35,141 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:37:35,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320697450] [2023-11-29 05:37:35,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:35,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:35,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:35,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:35,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:37:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:35,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 2855 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:37:35,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-29 05:37:35,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:37:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-11-29 05:37:36,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217809158] [2023-11-29 05:37:36,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:37:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320697450] [2023-11-29 05:37:36,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320697450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:37:36,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:37:36,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 05:37:36,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582407466] [2023-11-29 05:37:36,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:37:36,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:37:36,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:36,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:37:36,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:37:36,196 INFO L87 Difference]: Start difference. First operand 319 states and 459 transitions. Second operand has 14 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 9 states have call successors, (57), 4 states have call predecessors, (57), 4 states have return successors, (53), 5 states have call predecessors, (53), 9 states have call successors, (53) [2023-11-29 05:37:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:37,068 INFO L93 Difference]: Finished difference Result 584 states and 849 transitions. [2023-11-29 05:37:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:37:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 9 states have call successors, (57), 4 states have call predecessors, (57), 4 states have return successors, (53), 5 states have call predecessors, (53), 9 states have call successors, (53) Word has length 216 [2023-11-29 05:37:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:37,072 INFO L225 Difference]: With dead ends: 584 [2023-11-29 05:37:37,072 INFO L226 Difference]: Without dead ends: 338 [2023-11-29 05:37:37,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 417 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:37:37,075 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 150 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:37,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 3434 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:37:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-29 05:37:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 332. [2023-11-29 05:37:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 198 states have (on average 1.2525252525252526) internal successors, (248), 200 states have internal predecessors, (248), 107 states have call successors, (107), 23 states have call predecessors, (107), 26 states have return successors, (123), 108 states have call predecessors, (123), 106 states have call successors, (123) [2023-11-29 05:37:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 478 transitions. [2023-11-29 05:37:37,101 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 478 transitions. Word has length 216 [2023-11-29 05:37:37,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:37,102 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 478 transitions. [2023-11-29 05:37:37,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 9 states have call successors, (57), 4 states have call predecessors, (57), 4 states have return successors, (53), 5 states have call predecessors, (53), 9 states have call successors, (53) [2023-11-29 05:37:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 478 transitions. [2023-11-29 05:37:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-29 05:37:37,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:37,106 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 05:37:37,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:37:37,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:37,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:37,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:37,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2003826100, now seen corresponding path program 2 times [2023-11-29 05:37:37,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:37,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222139917] [2023-11-29 05:37:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:37,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:37,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:37:37,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547862433] [2023-11-29 05:37:37,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:37:37,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:37,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:37,394 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:37,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:37:38,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:37:38,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:37:38,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 3133 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:37:38,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-29 05:37:38,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:37:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:38,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222139917] [2023-11-29 05:37:38,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:37:38,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547862433] [2023-11-29 05:37:38,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547862433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:38,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:38,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:37:38,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382670940] [2023-11-29 05:37:38,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:38,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:37:38,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:38,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:37:38,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:37:38,363 INFO L87 Difference]: Start difference. First operand 332 states and 478 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-29 05:37:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:38,933 INFO L93 Difference]: Finished difference Result 597 states and 869 transitions. [2023-11-29 05:37:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:37:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 242 [2023-11-29 05:37:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:38,938 INFO L225 Difference]: With dead ends: 597 [2023-11-29 05:37:38,938 INFO L226 Difference]: Without dead ends: 343 [2023-11-29 05:37:38,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:37:38,941 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 78 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:38,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 2683 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:37:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-29 05:37:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-29 05:37:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 203 states have (on average 1.251231527093596) internal successors, (254), 205 states have internal predecessors, (254), 112 states have call successors, (112), 24 states have call predecessors, (112), 27 states have return successors, (128), 113 states have call predecessors, (128), 111 states have call successors, (128) [2023-11-29 05:37:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 494 transitions. [2023-11-29 05:37:38,969 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 494 transitions. Word has length 242 [2023-11-29 05:37:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:38,970 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 494 transitions. [2023-11-29 05:37:38,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-29 05:37:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 494 transitions. [2023-11-29 05:37:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-11-29 05:37:38,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:38,973 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:37:38,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:37:39,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:39,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:39,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1431250204, now seen corresponding path program 3 times [2023-11-29 05:37:39,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:39,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76341590] [2023-11-29 05:37:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:39,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:39,284 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:37:39,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150353209] [2023-11-29 05:37:39,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:37:39,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:39,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:39,285 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:39,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:37:40,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:37:40,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:37:40,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 2167 conjuncts, 149 conjunts are in the unsatisfiable core [2023-11-29 05:37:40,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:40,877 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 05:37:41,057 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 67 treesize of output 55 [2023-11-29 05:37:44,001 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 7 treesize of output 3 [2023-11-29 05:37:44,440 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 05:37:44,896 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 67 treesize of output 55 [2023-11-29 05:37:53,481 WARN L293 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:37:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 140 proven. 6 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-29 05:37:58,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:38:23,297 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 54 treesize of output 50 [2023-11-29 05:38:25,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:38:25,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76341590] [2023-11-29 05:38:25,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:38:25,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150353209] [2023-11-29 05:38:25,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150353209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:38:25,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:38:25,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2023-11-29 05:38:25,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219888196] [2023-11-29 05:38:25,439 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 05:38:25,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 05:38:25,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:38:25,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 05:38:25,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1495, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 05:38:25,442 INFO L87 Difference]: Start difference. First operand 343 states and 494 transitions. Second operand has 29 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 8 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-29 05:38:31,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:38:34,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:38:40,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:38:42,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-11-29 05:38:47,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:38:49,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:38:52,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:39:00,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:39:03,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:39:06,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:39:11,215 WARN L539 Checker$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 05:39:19,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:39:32,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:39:36,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:39:40,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:39:43,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:40:27,063 WARN L293 SmtUtils]: Spent 9.95s on a formula simplification that was a NOOP. DAG size: 87 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:40:31,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:40:35,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:40:50,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:40:54,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:41:03,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:41:12,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:41:17,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:41:22,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:41:31,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:41:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:35,969 INFO L93 Difference]: Finished difference Result 969 states and 1504 transitions. [2023-11-29 05:41:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 05:41:35,970 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 8 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) Word has length 255 [2023-11-29 05:41:35,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:35,978 INFO L225 Difference]: With dead ends: 969 [2023-11-29 05:41:35,978 INFO L226 Difference]: Without dead ends: 967 [2023-11-29 05:41:35,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 76.3s TimeCoverageRelationStatistics Valid=415, Invalid=4411, Unknown=4, NotChecked=0, Total=4830 [2023-11-29 05:41:35,981 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 803 mSDsluCounter, 4766 mSDsCounter, 0 mSdLazyCounter, 4105 mSolverCounterSat, 162 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 5177 SdHoareTripleChecker+Invalid, 4279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 4105 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:35,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 5177 Invalid, 4279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [162 Valid, 4105 Invalid, 12 Unknown, 0 Unchecked, 128.1s Time] [2023-11-29 05:41:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-11-29 05:41:36,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 946. [2023-11-29 05:41:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 571 states have (on average 1.2644483362521892) internal successors, (722), 579 states have internal predecessors, (722), 294 states have call successors, (294), 61 states have call predecessors, (294), 80 states have return successors, (450), 305 states have call predecessors, (450), 291 states have call successors, (450) [2023-11-29 05:41:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1466 transitions. [2023-11-29 05:41:36,069 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1466 transitions. Word has length 255 [2023-11-29 05:41:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:36,069 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1466 transitions. [2023-11-29 05:41:36,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 8 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-29 05:41:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1466 transitions. [2023-11-29 05:41:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 05:41:36,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:36,072 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 05:41:36,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:41:36,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:36,273 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:36,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:36,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1386427930, now seen corresponding path program 1 times [2023-11-29 05:41:36,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:36,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487090423] [2023-11-29 05:41:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:36,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:36,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:36,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886768101] [2023-11-29 05:41:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:36,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:36,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:36,374 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:36,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:41:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:37,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 3399 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:41:37,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-29 05:41:37,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:41:37,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:37,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487090423] [2023-11-29 05:41:37,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:37,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886768101] [2023-11-29 05:41:37,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886768101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:37,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:37,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:41:37,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082265447] [2023-11-29 05:41:37,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:37,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:37,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:37,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:41:37,111 INFO L87 Difference]: Start difference. First operand 946 states and 1466 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 05:41:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:37,403 INFO L93 Difference]: Finished difference Result 1861 states and 3020 transitions. [2023-11-29 05:41:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:37,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 276 [2023-11-29 05:41:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:37,414 INFO L225 Difference]: With dead ends: 1861 [2023-11-29 05:41:37,414 INFO L226 Difference]: Without dead ends: 958 [2023-11-29 05:41:37,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 273 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 05:41:37,424 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 7 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:37,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1156 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:41:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-11-29 05:41:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 947. [2023-11-29 05:41:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 573 states have (on average 1.2617801047120418) internal successors, (723), 580 states have internal predecessors, (723), 294 states have call successors, (294), 61 states have call predecessors, (294), 79 states have return successors, (437), 305 states have call predecessors, (437), 291 states have call successors, (437) [2023-11-29 05:41:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1454 transitions. [2023-11-29 05:41:37,577 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1454 transitions. Word has length 276 [2023-11-29 05:41:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:37,577 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1454 transitions. [2023-11-29 05:41:37,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 05:41:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1454 transitions. [2023-11-29 05:41:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-11-29 05:41:37,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:37,582 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:41:37,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 05:41:37,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:41:37,783 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:37,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1137283928, now seen corresponding path program 1 times [2023-11-29 05:41:37,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:37,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660101754] [2023-11-29 05:41:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:37,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:37,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:37,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112885080] [2023-11-29 05:41:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:37,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:37,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:37,881 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:37,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:41:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:38,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:41:38,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-11-29 05:41:38,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:41:38,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:38,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660101754] [2023-11-29 05:41:38,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:38,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112885080] [2023-11-29 05:41:38,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112885080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:38,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:38,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:41:38,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924107202] [2023-11-29 05:41:38,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:38,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:41:38,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:38,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:41:38,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:41:38,662 INFO L87 Difference]: Start difference. First operand 947 states and 1454 transitions. Second operand has 10 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 6 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-29 05:41:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:39,590 INFO L93 Difference]: Finished difference Result 1839 states and 2838 transitions. [2023-11-29 05:41:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:41:39,591 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 6 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) Word has length 271 [2023-11-29 05:41:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:39,598 INFO L225 Difference]: With dead ends: 1839 [2023-11-29 05:41:39,598 INFO L226 Difference]: Without dead ends: 995 [2023-11-29 05:41:39,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:41:39,604 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 153 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:39,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 2891 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:41:39,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-11-29 05:41:39,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 915. [2023-11-29 05:41:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 545 states have (on average 1.2568807339449541) internal successors, (685), 552 states have internal predecessors, (685), 292 states have call successors, (292), 61 states have call predecessors, (292), 77 states have return successors, (422), 301 states have call predecessors, (422), 289 states have call successors, (422) [2023-11-29 05:41:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1399 transitions. [2023-11-29 05:41:39,701 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1399 transitions. Word has length 271 [2023-11-29 05:41:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:39,702 INFO L495 AbstractCegarLoop]: Abstraction has 915 states and 1399 transitions. [2023-11-29 05:41:39,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 6 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-29 05:41:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1399 transitions. [2023-11-29 05:41:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-11-29 05:41:39,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:39,705 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:39,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:41:39,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:41:39,906 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:39,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1620222586, now seen corresponding path program 1 times [2023-11-29 05:41:39,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:39,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960531294] [2023-11-29 05:41:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:39,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:39,982 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:39,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830692191] [2023-11-29 05:41:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:39,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:39,984 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:39,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:41:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:40,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:41:40,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-11-29 05:41:40,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:41:40,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:40,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960531294] [2023-11-29 05:41:40,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:40,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830692191] [2023-11-29 05:41:40,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830692191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:40,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:40,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:41:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145801308] [2023-11-29 05:41:40,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:40,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:41:40,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:40,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:41:40,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:41:40,780 INFO L87 Difference]: Start difference. First operand 915 states and 1399 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 05:41:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:41,833 INFO L93 Difference]: Finished difference Result 1802 states and 2910 transitions. [2023-11-29 05:41:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:41:41,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 288 [2023-11-29 05:41:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:41,843 INFO L225 Difference]: With dead ends: 1802 [2023-11-29 05:41:41,844 INFO L226 Difference]: Without dead ends: 930 [2023-11-29 05:41:41,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 284 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 05:41:41,853 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 10 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:41,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1443 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:41:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2023-11-29 05:41:41,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 918. [2023-11-29 05:41:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 548 states have (on average 1.2554744525547445) internal successors, (688), 555 states have internal predecessors, (688), 292 states have call successors, (292), 61 states have call predecessors, (292), 77 states have return successors, (422), 301 states have call predecessors, (422), 289 states have call successors, (422) [2023-11-29 05:41:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1402 transitions. [2023-11-29 05:41:41,976 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1402 transitions. Word has length 288 [2023-11-29 05:41:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:41,976 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1402 transitions. [2023-11-29 05:41:41,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 05:41:41,977 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1402 transitions. [2023-11-29 05:41:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-11-29 05:41:41,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:41,980 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:41,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 05:41:42,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 05:41:42,181 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:42,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:42,182 INFO L85 PathProgramCache]: Analyzing trace with hash -239079568, now seen corresponding path program 1 times [2023-11-29 05:41:42,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:42,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832282360] [2023-11-29 05:41:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:42,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:42,267 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:42,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44140433] [2023-11-29 05:41:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:42,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:42,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:42,268 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:42,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:41:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 3414 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:41:43,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-29 05:41:43,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:41:43,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:43,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832282360] [2023-11-29 05:41:43,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:43,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44140433] [2023-11-29 05:41:43,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44140433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:43,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:43,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:41:43,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780876734] [2023-11-29 05:41:43,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:43,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:41:43,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:43,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:41:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:41:43,093 INFO L87 Difference]: Start difference. First operand 918 states and 1402 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-29 05:41:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:45,210 INFO L93 Difference]: Finished difference Result 1884 states and 2911 transitions. [2023-11-29 05:41:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:41:45,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 278 [2023-11-29 05:41:45,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:45,220 INFO L225 Difference]: With dead ends: 1884 [2023-11-29 05:41:45,220 INFO L226 Difference]: Without dead ends: 1009 [2023-11-29 05:41:45,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:41:45,228 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 18 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:45,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1758 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 05:41:45,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-11-29 05:41:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 946. [2023-11-29 05:41:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 576 states have (on average 1.2552083333333333) internal successors, (723), 583 states have internal predecessors, (723), 292 states have call successors, (292), 61 states have call predecessors, (292), 77 states have return successors, (422), 301 states have call predecessors, (422), 289 states have call successors, (422) [2023-11-29 05:41:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1437 transitions. [2023-11-29 05:41:45,334 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1437 transitions. Word has length 278 [2023-11-29 05:41:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:45,334 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1437 transitions. [2023-11-29 05:41:45,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-29 05:41:45,335 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1437 transitions. [2023-11-29 05:41:45,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-11-29 05:41:45,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:45,339 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:45,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:41:45,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:45,539 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:45,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1461526926, now seen corresponding path program 1 times [2023-11-29 05:41:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:45,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826654073] [2023-11-29 05:41:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:45,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:45,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404439829] [2023-11-29 05:41:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:45,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:45,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:45,625 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:45,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:41:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:46,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 3411 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:41:46,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-29 05:41:46,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:41:46,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826654073] [2023-11-29 05:41:46,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404439829] [2023-11-29 05:41:46,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404439829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:46,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:46,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:41:46,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123658512] [2023-11-29 05:41:46,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:46,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:46,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:46,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:41:46,306 INFO L87 Difference]: Start difference. First operand 946 states and 1437 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-29 05:41:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:46,798 INFO L93 Difference]: Finished difference Result 1877 states and 2890 transitions. [2023-11-29 05:41:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:41:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 288 [2023-11-29 05:41:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:46,805 INFO L225 Difference]: With dead ends: 1877 [2023-11-29 05:41:46,805 INFO L226 Difference]: Without dead ends: 974 [2023-11-29 05:41:46,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 285 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 05:41:46,811 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 3 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:46,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1148 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:41:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-11-29 05:41:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 960. [2023-11-29 05:41:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 590 states have (on average 1.2491525423728813) internal successors, (737), 597 states have internal predecessors, (737), 292 states have call successors, (292), 61 states have call predecessors, (292), 77 states have return successors, (422), 301 states have call predecessors, (422), 289 states have call successors, (422) [2023-11-29 05:41:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1451 transitions. [2023-11-29 05:41:46,909 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1451 transitions. Word has length 288 [2023-11-29 05:41:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:46,910 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1451 transitions. [2023-11-29 05:41:46,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-29 05:41:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1451 transitions. [2023-11-29 05:41:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-11-29 05:41:46,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:46,914 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:46,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:41:47,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:41:47,115 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:47,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1382959684, now seen corresponding path program 1 times [2023-11-29 05:41:47,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:47,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781100033] [2023-11-29 05:41:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:47,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:47,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:47,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214178863] [2023-11-29 05:41:47,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:47,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:47,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:47,196 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:47,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:41:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 3397 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 05:41:47,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:47,973 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 05:41:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-29 05:41:48,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:41:48,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:48,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781100033] [2023-11-29 05:41:48,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:48,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214178863] [2023-11-29 05:41:48,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214178863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:48,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:48,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 05:41:48,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321939590] [2023-11-29 05:41:48,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:48,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:41:48,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:41:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:41:48,164 INFO L87 Difference]: Start difference. First operand 960 states and 1451 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2023-11-29 05:41:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:50,715 INFO L93 Difference]: Finished difference Result 1997 states and 3079 transitions. [2023-11-29 05:41:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:41:50,716 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) Word has length 282 [2023-11-29 05:41:50,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:50,723 INFO L225 Difference]: With dead ends: 1997 [2023-11-29 05:41:50,723 INFO L226 Difference]: Without dead ends: 1080 [2023-11-29 05:41:50,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:41:50,730 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 106 mSDsluCounter, 2921 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:50,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 3278 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 05:41:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-11-29 05:41:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 996. [2023-11-29 05:41:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 623 states have (on average 1.245585874799358) internal successors, (776), 627 states have internal predecessors, (776), 292 states have call successors, (292), 61 states have call predecessors, (292), 80 states have return successors, (461), 307 states have call predecessors, (461), 289 states have call successors, (461) [2023-11-29 05:41:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1529 transitions. [2023-11-29 05:41:50,813 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1529 transitions. Word has length 282 [2023-11-29 05:41:50,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:50,814 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1529 transitions. [2023-11-29 05:41:50,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2023-11-29 05:41:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1529 transitions. [2023-11-29 05:41:50,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-11-29 05:41:50,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:50,817 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 05:41:50,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:41:51,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:41:51,018 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:51,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:51,018 INFO L85 PathProgramCache]: Analyzing trace with hash -780810290, now seen corresponding path program 1 times [2023-11-29 05:41:51,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:51,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724615847] [2023-11-29 05:41:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:51,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:51,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:51,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499269023] [2023-11-29 05:41:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:51,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:51,119 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:51,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:41:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:51,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 3408 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 05:41:51,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-29 05:41:51,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:41:51,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:51,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724615847] [2023-11-29 05:41:51,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:41:51,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499269023] [2023-11-29 05:41:51,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499269023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:51,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:51,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:41:51,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113391882] [2023-11-29 05:41:51,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:51,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:41:51,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:41:51,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:41:51,943 INFO L87 Difference]: Start difference. First operand 996 states and 1529 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-29 05:41:52,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:52,317 INFO L93 Difference]: Finished difference Result 2033 states and 3151 transitions. [2023-11-29 05:41:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:41:52,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 284 [2023-11-29 05:41:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:52,325 INFO L225 Difference]: With dead ends: 2033 [2023-11-29 05:41:52,325 INFO L226 Difference]: Without dead ends: 1080 [2023-11-29 05:41:52,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:41:52,331 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 6 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:52,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1550 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:41:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-11-29 05:41:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1052. [2023-11-29 05:41:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 679 states have (on average 1.2459499263622975) internal successors, (846), 683 states have internal predecessors, (846), 292 states have call successors, (292), 61 states have call predecessors, (292), 80 states have return successors, (461), 307 states have call predecessors, (461), 289 states have call successors, (461) [2023-11-29 05:41:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1599 transitions. [2023-11-29 05:41:52,411 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1599 transitions. Word has length 284 [2023-11-29 05:41:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:52,412 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1599 transitions. [2023-11-29 05:41:52,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-29 05:41:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1599 transitions. [2023-11-29 05:41:52,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-11-29 05:41:52,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:52,415 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:52,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:41:52,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:41:52,616 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:52,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:52,616 INFO L85 PathProgramCache]: Analyzing trace with hash 113754262, now seen corresponding path program 2 times [2023-11-29 05:41:52,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:52,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350812063] [2023-11-29 05:41:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:52,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:52,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:41:52,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517058281] [2023-11-29 05:41:52,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:41:52,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:52,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:52,719 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:52,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e39cb4-e4aa-4fd5-8112-e791ee2e58aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:41:53,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:41:53,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:41:53,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 3414 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 05:41:53,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 160 proven. 67 refuted. 67 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-29 05:43:10,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:22,364 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 05:43:22,364 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 19 [2023-11-29 05:43:26,428 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 05:43:26,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-11-29 05:43:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 36 proven. 70 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-29 05:43:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350812063] [2023-11-29 05:43:26,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517058281] [2023-11-29 05:43:26,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517058281] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:43:26,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:43:26,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 27 [2023-11-29 05:43:26,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793584355] [2023-11-29 05:43:26,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:43:26,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 05:43:26,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:26,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 05:43:26,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=608, Unknown=13, NotChecked=0, Total=702 [2023-11-29 05:43:26,490 INFO L87 Difference]: Start difference. First operand 1052 states and 1599 transitions. Second operand has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 23 states have internal predecessors, (194), 16 states have call successors, (69), 8 states have call predecessors, (69), 7 states have return successors, (64), 15 states have call predecessors, (64), 15 states have call successors, (64) [2023-11-29 05:43:31,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:43:36,787 WARN L539 Checker$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 05:43:39,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:43:43,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:43:47,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:43:51,902 WARN L539 Checker$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 05:43:55,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:00,007 WARN L539 Checker$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 05:44:04,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:08,173 WARN L539 Checker$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 05:44:12,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:16,318 WARN L539 Checker$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 05:44:20,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:24,425 WARN L539 Checker$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 05:44:28,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:32,601 WARN L539 Checker$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 05:44:36,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:40,714 WARN L539 Checker$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 05:44:44,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:48,823 WARN L539 Checker$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 05:44:57,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:45:01,124 WARN L539 Checker$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 05:45:05,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:45:09,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:45:13,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:45:21,382 WARN L539 Checker$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 05:45:25,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:45:29,506 WARN L539 Checker$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 05:45:33,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:45:37,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:45:41,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:45:45,682 WARN L539 Checker$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 05:45:49,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:45:57,807 WARN L539 Checker$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 05:46:14,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:46:18,385 WARN L539 Checker$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 05:46:22,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:46:26,615 WARN L539 Checker$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 05:46:30,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:46:44,043 WARN L539 Checker$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 05:46:48,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:46:52,123 WARN L539 Checker$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 05:46:56,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:47:04,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:47:08,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:47:12,459 WARN L539 Checker$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 05:47:16,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:47:20,550 WARN L539 Checker$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 05:47:24,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:47:36,916 WARN L539 Checker$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 05:47:40,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:47:44,948 WARN L539 Checker$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 05:47:48,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:48:22,281 WARN L539 Checker$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 05:48:26,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:48:30,419 WARN L539 Checker$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 05:48:34,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:48:38,574 WARN L539 Checker$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 05:48:42,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:48:46,750 WARN L539 Checker$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 05:48:50,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:48:54,854 WARN L539 Checker$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 05:49:03,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:49:07,583 WARN L539 Checker$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 05:49:33,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:49:37,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:49:41,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:49:44,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:49:48,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:49:52,953 WARN L539 Checker$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 05:49:57,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:01,024 WARN L539 Checker$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 05:50:05,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:09,103 WARN L539 Checker$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 05:50:13,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:17,218 WARN L539 Checker$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 05:50:21,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:25,255 WARN L539 Checker$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 05:50:29,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:33,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:37,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:41,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:45,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:49,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:53,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:50:57,651 WARN L539 Checker$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 05:51:01,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:51:05,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:51:09,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:51:46,051 WARN L539 Checker$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 05:51:50,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:51:54,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]