./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.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_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/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_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/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_9d3239b6-9b9f-421a-9f4c-3b38d2903483/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 b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:03:11,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:03:11,660 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 01:03:11,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:03:11,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:03:11,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:03:11,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:03:11,688 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:03:11,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:03:11,689 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:03:11,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:03:11,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:03:11,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:03:11,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:03:11,692 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:03:11,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:03:11,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:03:11,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:03:11,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:03:11,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:03:11,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:03:11,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:03:11,696 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:03:11,697 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:03:11,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:03:11,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:03:11,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:03:11,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:03:11,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:03:11,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:03:11,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:03:11,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:03:11,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:03:11,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:03:11,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:03:11,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:03:11,701 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:03:11,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:03:11,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:03:11,702 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_9d3239b6-9b9f-421a-9f4c-3b38d2903483/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 [2023-11-29 01:03:11,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:03:11,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:03:11,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:03:11,938 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:03:11,938 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:03:11,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2023-11-29 01:03:14,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:03:15,159 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:03:15,160 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2023-11-29 01:03:15,194 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/data/ad485e74c/380e1377ef3047da921a2bb77cfa2d15/FLAG8138789a2 [2023-11-29 01:03:15,209 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/data/ad485e74c/380e1377ef3047da921a2bb77cfa2d15 [2023-11-29 01:03:15,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:03:15,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:03:15,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:03:15,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:03:15,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:03:15,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:03:15" (1/1) ... [2023-11-29 01:03:15,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc755c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:15, skipping insertion in model container [2023-11-29 01:03:15,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:03:15" (1/1) ... [2023-11-29 01:03:15,351 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:03:15,647 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_9d3239b6-9b9f-421a-9f4c-3b38d2903483/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4493,4506] [2023-11-29 01:03:15,658 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_9d3239b6-9b9f-421a-9f4c-3b38d2903483/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4553,4566] [2023-11-29 01:03:16,995 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:16,996 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:16,997 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:16,998 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:16,999 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:17,015 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:17,015 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:17,017 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:17,018 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:17,020 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:17,022 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:17,023 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:17,023 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:17,499 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 01:03:17,500 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 01:03:17,501 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 01:03:17,503 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 01:03:17,505 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 01:03:17,505 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 01:03:17,506 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 01:03:17,507 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 01:03:17,508 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 01:03:17,509 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 01:03:18,011 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,012 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,037 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,039 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,045 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,046 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,064 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,065 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,065 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,066 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,066 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:03:18,142 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:03:18,156 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_9d3239b6-9b9f-421a-9f4c-3b38d2903483/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4493,4506] [2023-11-29 01:03:18,156 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_9d3239b6-9b9f-421a-9f4c-3b38d2903483/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4553,4566] [2023-11-29 01:03:18,220 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,220 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,220 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,221 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,221 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,227 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,228 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,229 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,229 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,230 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,231 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,263 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 01:03:18,264 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 01:03:18,265 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 01:03:18,266 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 01:03:18,266 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 01:03:18,267 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 01:03:18,267 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 01:03:18,268 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 01:03:18,268 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 01:03:18,269 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 01:03:18,305 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2023-11-29 01:03:18,385 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,385 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,406 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,407 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,407 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,408 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,408 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,408 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:03:18,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:03:18,771 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,771 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,771 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,771 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,772 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,772 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,772 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,772 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,772 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,772 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,772 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,772 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,772 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,772 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,773 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,773 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,773 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,773 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:03:18,780 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:03:18,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18 WrapperNode [2023-11-29 01:03:18,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:03:18,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:03:18,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:03:18,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:03:18,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:18,871 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:18,937 INFO L138 Inliner]: procedures = 772, calls = 2447, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 623 [2023-11-29 01:03:18,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:03:18,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:03:18,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:03:18,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:03:18,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:18,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:18,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:19,034 INFO L175 MemorySlicer]: Split 340 memory accesses to 9 slices as follows [3, 51, 2, 23, 5, 245, 2, 6, 3]. 72 percent of accesses are in the largest equivalence class. The 255 initializations are split as follows [0, 9, 2, 0, 5, 236, 0, 0, 3]. The 17 writes are split as follows [1, 11, 0, 1, 0, 1, 1, 2, 0]. [2023-11-29 01:03:19,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:19,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:19,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:19,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:19,095 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:19,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:19,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:03:19,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:03:19,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:03:19,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:03:19,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (1/1) ... [2023-11-29 01:03:19,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:03:19,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:19,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:03:19,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:03:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-29 01:03:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-29 01:03:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-29 01:03:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-29 01:03:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-29 01:03:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-11-29 01:03:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-11-29 01:03:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-11-29 01:03:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-11-29 01:03:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:03:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:03:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:03:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:03:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:03:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 01:03:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 01:03:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 01:03:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-29 01:03:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-29 01:03:19,193 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-29 01:03:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:03:19,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:03:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-29 01:03:19,194 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-29 01:03:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:03:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:03:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:03:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:03:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:03:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:03:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 01:03:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 01:03:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 01:03:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-29 01:03:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-29 01:03:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:03:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:03:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 01:03:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 01:03:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-29 01:03:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-29 01:03:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 01:03:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 01:03:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 01:03:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 01:03:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-29 01:03:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2023-11-29 01:03:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2023-11-29 01:03:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2023-11-29 01:03:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#8 [2023-11-29 01:03:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 01:03:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 01:03:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 01:03:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 01:03:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-29 01:03:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2023-11-29 01:03:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2023-11-29 01:03:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2023-11-29 01:03:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#8 [2023-11-29 01:03:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:03:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-29 01:03:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-29 01:03:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:03:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:03:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:03:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:03:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 01:03:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 01:03:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 01:03:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-29 01:03:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-29 01:03:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-29 01:03:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-29 01:03:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:03:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:03:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:03:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:03:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:03:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 01:03:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 01:03:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 01:03:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-29 01:03:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-29 01:03:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-29 01:03:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:03:19,201 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2023-11-29 01:03:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2023-11-29 01:03:19,201 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-29 01:03:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-29 01:03:19,201 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2023-11-29 01:03:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2023-11-29 01:03:19,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:03:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:03:19,201 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2023-11-29 01:03:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2023-11-29 01:03:19,202 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-29 01:03:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-29 01:03:19,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 01:03:19,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 01:03:19,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 01:03:19,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 01:03:19,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 01:03:19,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 01:03:19,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-29 01:03:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-29 01:03:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-29 01:03:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-29 01:03:19,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-29 01:03:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-29 01:03:19,203 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-29 01:03:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:03:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:03:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:03:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:03:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:03:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:03:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 01:03:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 01:03:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 01:03:19,546 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:03:19,564 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:03:19,837 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2023-11-29 01:03:20,425 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:03:20,554 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:03:20,554 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 01:03:20,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:03:20 BoogieIcfgContainer [2023-11-29 01:03:20,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:03:20,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:03:20,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:03:20,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:03:20,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:03:15" (1/3) ... [2023-11-29 01:03:20,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fa83aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:03:20, skipping insertion in model container [2023-11-29 01:03:20,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:03:18" (2/3) ... [2023-11-29 01:03:20,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fa83aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:03:20, skipping insertion in model container [2023-11-29 01:03:20,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:03:20" (3/3) ... [2023-11-29 01:03:20,563 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness-1.i [2023-11-29 01:03:20,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:03:20,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:03:20,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:03:20,643 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;@1068cd08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:03:20,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:03:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 96 states have internal predecessors, (128), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-29 01:03:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 01:03:20,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:20,667 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2023-11-29 01:03:20,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:20,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1625083758, now seen corresponding path program 1 times [2023-11-29 01:03:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:20,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910632132] [2023-11-29 01:03:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:21,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:03:21,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619209588] [2023-11-29 01:03:21,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:21,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:21,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:21,052 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:21,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:03:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:21,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:03:21,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-29 01:03:21,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:03:21,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910632132] [2023-11-29 01:03:21,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:03:21,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619209588] [2023-11-29 01:03:21,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619209588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:03:21,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:03:21,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:03:21,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852152616] [2023-11-29 01:03:21,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:03:21,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:03:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:03:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:03:21,861 INFO L87 Difference]: Start difference. First operand has 154 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 96 states have internal predecessors, (128), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 01:03:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:22,145 INFO L93 Difference]: Finished difference Result 302 states and 439 transitions. [2023-11-29 01:03:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:03:22,148 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 137 [2023-11-29 01:03:22,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:22,160 INFO L225 Difference]: With dead ends: 302 [2023-11-29 01:03:22,160 INFO L226 Difference]: Without dead ends: 152 [2023-11-29 01:03:22,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:03:22,169 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:22,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:03:22,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-29 01:03:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-11-29 01:03:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 94 states have (on average 1.2765957446808511) internal successors, (120), 95 states have internal predecessors, (120), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 01:03:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2023-11-29 01:03:22,218 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 137 [2023-11-29 01:03:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:03:22,220 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2023-11-29 01:03:22,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 01:03:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2023-11-29 01:03:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-29 01:03:22,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:22,225 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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 01:03:22,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:03:22,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:03:22,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:22,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:22,426 INFO L85 PathProgramCache]: Analyzing trace with hash 34884540, now seen corresponding path program 1 times [2023-11-29 01:03:22,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:22,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882546539] [2023-11-29 01:03:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:22,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:22,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:03:22,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898610398] [2023-11-29 01:03:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:22,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:22,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:22,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:22,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:03:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:23,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:03:23,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-29 01:03:23,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:03:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-29 01:03:23,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:23,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882546539] [2023-11-29 01:03:23,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:03:23,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898610398] [2023-11-29 01:03:23,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898610398] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:23,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:03:23,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-11-29 01:03:23,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679504677] [2023-11-29 01:03:23,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:03:23,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:03:23,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:23,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:03:23,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:03:23,780 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-29 01:03:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:24,429 INFO L93 Difference]: Finished difference Result 220 states and 292 transitions. [2023-11-29 01:03:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:03:24,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 142 [2023-11-29 01:03:24,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:24,434 INFO L225 Difference]: With dead ends: 220 [2023-11-29 01:03:24,434 INFO L226 Difference]: Without dead ends: 154 [2023-11-29 01:03:24,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:03:24,436 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 201 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:24,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 861 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:03:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-29 01:03:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-29 01:03:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 97 states have internal predecessors, (121), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-29 01:03:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 201 transitions. [2023-11-29 01:03:24,461 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 201 transitions. Word has length 142 [2023-11-29 01:03:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:03:24,462 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 201 transitions. [2023-11-29 01:03:24,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-29 01:03:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 201 transitions. [2023-11-29 01:03:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 01:03:24,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:24,467 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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 01:03:24,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:03:24,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 01:03:24,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:24,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:24,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1806913470, now seen corresponding path program 1 times [2023-11-29 01:03:24,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:24,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923115376] [2023-11-29 01:03:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:24,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:24,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:03:24,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448792761] [2023-11-29 01:03:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:24,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:24,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:24,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:24,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:03:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:25,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:03:25,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-29 01:03:25,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:03:25,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:25,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923115376] [2023-11-29 01:03:25,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:03:25,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448792761] [2023-11-29 01:03:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448792761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:03:25,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:03:25,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:03:25,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127212665] [2023-11-29 01:03:25,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:03:25,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:03:25,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:03:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:03:25,385 INFO L87 Difference]: Start difference. First operand 154 states and 201 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 01:03:25,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:25,649 INFO L93 Difference]: Finished difference Result 302 states and 395 transitions. [2023-11-29 01:03:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:03:25,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 143 [2023-11-29 01:03:25,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:25,652 INFO L225 Difference]: With dead ends: 302 [2023-11-29 01:03:25,652 INFO L226 Difference]: Without dead ends: 158 [2023-11-29 01:03:25,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 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 01:03:25,654 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:25,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 720 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:03:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-29 01:03:25,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-11-29 01:03:25,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 98 states have (on average 1.2653061224489797) internal successors, (124), 100 states have internal predecessors, (124), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2023-11-29 01:03:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 205 transitions. [2023-11-29 01:03:25,667 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 205 transitions. Word has length 143 [2023-11-29 01:03:25,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:03:25,667 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 205 transitions. [2023-11-29 01:03:25,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-29 01:03:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 205 transitions. [2023-11-29 01:03:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 01:03:25,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:25,670 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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 01:03:25,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:03:25,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:25,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:25,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:25,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2052626144, now seen corresponding path program 1 times [2023-11-29 01:03:25,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:25,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320260816] [2023-11-29 01:03:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:25,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:03:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:03:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:03:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:03:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:03:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 01:03:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 01:03:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:27,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:03:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:03:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:03:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:03:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:03:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 01:03:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 01:03:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 01:03:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:03:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 01:03:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:03:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-29 01:03:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-29 01:03:28,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:28,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320260816] [2023-11-29 01:03:28,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320260816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:28,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410344438] [2023-11-29 01:03:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:28,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:28,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:28,226 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:28,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:03:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:28,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:03:28,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:29,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:03:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:03:29,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:03:29,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410344438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:03:29,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:03:29,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 23 [2023-11-29 01:03:29,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998770491] [2023-11-29 01:03:29,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:03:29,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:03:29,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:03:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:03:29,360 INFO L87 Difference]: Start difference. First operand 158 states and 205 transitions. Second operand has 11 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 4 states have call successors, (28), 3 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 01:03:33,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:03:38,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:03:42,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:03:46,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:03:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:47,297 INFO L93 Difference]: Finished difference Result 347 states and 444 transitions. [2023-11-29 01:03:47,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:03:47,298 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 4 states have call successors, (28), 3 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 151 [2023-11-29 01:03:47,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:47,299 INFO L225 Difference]: With dead ends: 347 [2023-11-29 01:03:47,300 INFO L226 Difference]: Without dead ends: 209 [2023-11-29 01:03:47,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:03:47,301 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 183 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 20 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:47,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 985 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 499 Invalid, 4 Unknown, 0 Unchecked, 17.8s Time] [2023-11-29 01:03:47,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-29 01:03:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2023-11-29 01:03:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 130 states have (on average 1.2538461538461538) internal successors, (163), 133 states have internal predecessors, (163), 46 states have call successors, (46), 25 states have call predecessors, (46), 29 states have return successors, (51), 47 states have call predecessors, (51), 45 states have call successors, (51) [2023-11-29 01:03:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2023-11-29 01:03:47,330 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 151 [2023-11-29 01:03:47,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:03:47,331 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2023-11-29 01:03:47,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 4 states have call successors, (28), 3 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 01:03:47,331 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2023-11-29 01:03:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 01:03:47,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:47,334 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:03:47,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:03:47,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:47,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:47,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1358832162, now seen corresponding path program 1 times [2023-11-29 01:03:47,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:47,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065907527] [2023-11-29 01:03:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:47,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:47,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:47,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:03:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:03:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:03:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:03:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:03:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 01:03:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 01:03:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:03:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:03:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:03:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:03:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:03:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 01:03:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 01:03:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 01:03:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:03:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 01:03:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:03:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-29 01:03:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-29 01:03:48,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:48,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065907527] [2023-11-29 01:03:48,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065907527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:48,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571404749] [2023-11-29 01:03:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:48,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:48,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:48,399 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:48,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:03:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:03:48,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 01:03:49,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:03:49,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571404749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:03:49,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:03:49,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-11-29 01:03:49,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198025923] [2023-11-29 01:03:49,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:03:49,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:03:49,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:49,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:03:49,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:03:49,083 INFO L87 Difference]: Start difference. First operand 206 states and 260 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-29 01:03:49,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:49,397 INFO L93 Difference]: Finished difference Result 352 states and 454 transitions. [2023-11-29 01:03:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:03:49,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 151 [2023-11-29 01:03:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:49,401 INFO L225 Difference]: With dead ends: 352 [2023-11-29 01:03:49,401 INFO L226 Difference]: Without dead ends: 210 [2023-11-29 01:03:49,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:03:49,403 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 17 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:49,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 508 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:03:49,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-29 01:03:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2023-11-29 01:03:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 131 states have (on average 1.251908396946565) internal successors, (164), 134 states have internal predecessors, (164), 47 states have call successors, (47), 25 states have call predecessors, (47), 29 states have return successors, (52), 48 states have call predecessors, (52), 46 states have call successors, (52) [2023-11-29 01:03:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 263 transitions. [2023-11-29 01:03:49,426 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 263 transitions. Word has length 151 [2023-11-29 01:03:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:03:49,427 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 263 transitions. [2023-11-29 01:03:49,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-29 01:03:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 263 transitions. [2023-11-29 01:03:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 01:03:49,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:49,430 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 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] [2023-11-29 01:03:49,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:03:49,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:49,630 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:49,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1652658571, now seen corresponding path program 1 times [2023-11-29 01:03:49,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:49,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421025949] [2023-11-29 01:03:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:49,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:03:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:03:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:03:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:03:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:03:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 01:03:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 01:03:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:03:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:03:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:03:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:03:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:03:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:03:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:03:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:03:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 01:03:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 01:03:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 01:03:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 01:03:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:03:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 01:03:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-29 01:03:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:50,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421025949] [2023-11-29 01:03:50,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421025949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:50,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90927674] [2023-11-29 01:03:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:50,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:50,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:50,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:50,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:03:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:51,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 2600 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 01:03:51,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:55,763 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$#5.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$#5.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2023-11-29 01:04:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-29 01:04:03,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90927674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:03,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:04:03,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-11-29 01:04:03,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969464778] [2023-11-29 01:04:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:03,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:04:03,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:04:03,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=230, Unknown=3, NotChecked=30, Total=306 [2023-11-29 01:04:03,888 INFO L87 Difference]: Start difference. First operand 208 states and 263 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-29 01:04:09,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:04:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:09,802 INFO L93 Difference]: Finished difference Result 361 states and 471 transitions. [2023-11-29 01:04:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:04:09,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 157 [2023-11-29 01:04:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:09,805 INFO L225 Difference]: With dead ends: 361 [2023-11-29 01:04:09,805 INFO L226 Difference]: Without dead ends: 215 [2023-11-29 01:04:09,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=71, Invalid=350, Unknown=3, NotChecked=38, Total=462 [2023-11-29 01:04:09,806 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 12 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:09,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1023 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 193 Invalid, 1 Unknown, 218 Unchecked, 5.8s Time] [2023-11-29 01:04:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-29 01:04:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2023-11-29 01:04:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.2444444444444445) internal successors, (168), 138 states have internal predecessors, (168), 48 states have call successors, (48), 26 states have call predecessors, (48), 30 states have return successors, (53), 49 states have call predecessors, (53), 47 states have call successors, (53) [2023-11-29 01:04:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 269 transitions. [2023-11-29 01:04:09,829 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 269 transitions. Word has length 157 [2023-11-29 01:04:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:09,829 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 269 transitions. [2023-11-29 01:04:09,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-29 01:04:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 269 transitions. [2023-11-29 01:04:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 01:04:09,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:09,833 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2023-11-29 01:04:09,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:04:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:10,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:10,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash 533073995, now seen corresponding path program 1 times [2023-11-29 01:04:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:10,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157542867] [2023-11-29 01:04:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:10,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:04:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:04:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:04:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 01:04:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 01:04:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:04:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:04:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 01:04:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 01:04:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 01:04:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 01:04:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 01:04:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 01:04:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-29 01:04:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:04:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 01:04:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-29 01:04:13,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157542867] [2023-11-29 01:04:13,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157542867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050611863] [2023-11-29 01:04:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:13,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:13,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:13,360 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:13,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:04:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 2631 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 01:04:14,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:14,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:04:15,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-29 01:04:15,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 01:04:15,600 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 20 treesize of output 12 [2023-11-29 01:04:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 138 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 01:04:15,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:16,282 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 30 treesize of output 26 [2023-11-29 01:04:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-29 01:04:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050611863] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:16,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:04:16,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [21, 19] total 44 [2023-11-29 01:04:16,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715924260] [2023-11-29 01:04:16,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:16,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:04:16,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:04:16,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1757, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 01:04:16,427 INFO L87 Difference]: Start difference. First operand 214 states and 269 transitions. Second operand has 16 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 8 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2023-11-29 01:04:18,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:18,144 INFO L93 Difference]: Finished difference Result 320 states and 411 transitions. [2023-11-29 01:04:18,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:04:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 8 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 163 [2023-11-29 01:04:18,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:18,147 INFO L225 Difference]: With dead ends: 320 [2023-11-29 01:04:18,147 INFO L226 Difference]: Without dead ends: 216 [2023-11-29 01:04:18,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 335 SyntacticMatches, 15 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=176, Invalid=2374, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 01:04:18,149 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 56 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:18,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1751 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:04:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-29 01:04:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-11-29 01:04:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 136 states have (on average 1.2426470588235294) internal successors, (169), 140 states have internal predecessors, (169), 48 states have call successors, (48), 26 states have call predecessors, (48), 31 states have return successors, (54), 49 states have call predecessors, (54), 47 states have call successors, (54) [2023-11-29 01:04:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 271 transitions. [2023-11-29 01:04:18,181 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 271 transitions. Word has length 163 [2023-11-29 01:04:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:18,182 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 271 transitions. [2023-11-29 01:04:18,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 8 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2023-11-29 01:04:18,182 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 271 transitions. [2023-11-29 01:04:18,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 01:04:18,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:18,185 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 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] [2023-11-29 01:04:18,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:04:18,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:18,386 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:18,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:18,387 INFO L85 PathProgramCache]: Analyzing trace with hash 994016847, now seen corresponding path program 1 times [2023-11-29 01:04:18,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:18,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243994344] [2023-11-29 01:04:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:18,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:04:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:04:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:04:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:18,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 01:04:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 01:04:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:04:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:04:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 01:04:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 01:04:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 01:04:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 01:04:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 01:04:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 01:04:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-29 01:04:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:04:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 01:04:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-29 01:04:19,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:19,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243994344] [2023-11-29 01:04:19,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243994344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:19,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218116268] [2023-11-29 01:04:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:19,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:19,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:19,274 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:19,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:04:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:19,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:04:19,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-29 01:04:20,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:20,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218116268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:20,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:04:20,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-29 01:04:20,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761889350] [2023-11-29 01:04:20,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:20,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:20,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:04:20,023 INFO L87 Difference]: Start difference. First operand 216 states and 271 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-29 01:04:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:20,428 INFO L93 Difference]: Finished difference Result 322 states and 410 transitions. [2023-11-29 01:04:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:04:20,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 163 [2023-11-29 01:04:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:20,430 INFO L225 Difference]: With dead ends: 322 [2023-11-29 01:04:20,430 INFO L226 Difference]: Without dead ends: 216 [2023-11-29 01:04:20,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:04:20,432 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 37 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:20,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 817 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:04:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-29 01:04:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-11-29 01:04:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 136 states have (on average 1.2426470588235294) internal successors, (169), 140 states have internal predecessors, (169), 48 states have call successors, (48), 26 states have call predecessors, (48), 31 states have return successors, (53), 49 states have call predecessors, (53), 47 states have call successors, (53) [2023-11-29 01:04:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 270 transitions. [2023-11-29 01:04:20,451 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 270 transitions. Word has length 163 [2023-11-29 01:04:20,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:20,452 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 270 transitions. [2023-11-29 01:04:20,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-29 01:04:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 270 transitions. [2023-11-29 01:04:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 01:04:20,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:20,455 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:20,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:04:20,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:20,657 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:20,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:20,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2066079416, now seen corresponding path program 2 times [2023-11-29 01:04:20,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:20,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031102723] [2023-11-29 01:04:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:20,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:04:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:04:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:04:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 01:04:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 01:04:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:04:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:04:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 01:04:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 01:04:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 01:04:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 01:04:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 01:04:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-29 01:04:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 01:04:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-29 01:04:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-29 01:04:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-29 01:04:22,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:22,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031102723] [2023-11-29 01:04:22,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031102723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:22,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:22,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 01:04:22,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084109130] [2023-11-29 01:04:22,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:22,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:04:22,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:22,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:04:22,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:04:22,643 INFO L87 Difference]: Start difference. First operand 216 states and 270 transitions. Second operand has 16 states, 14 states have (on average 4.571428571428571) internal successors, (64), 9 states have internal predecessors, (64), 7 states have call successors, (27), 9 states have call predecessors, (27), 2 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-29 01:04:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:25,285 INFO L93 Difference]: Finished difference Result 327 states and 416 transitions. [2023-11-29 01:04:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 01:04:25,285 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.571428571428571) internal successors, (64), 9 states have internal predecessors, (64), 7 states have call successors, (27), 9 states have call predecessors, (27), 2 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 175 [2023-11-29 01:04:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:25,287 INFO L225 Difference]: With dead ends: 327 [2023-11-29 01:04:25,287 INFO L226 Difference]: Without dead ends: 235 [2023-11-29 01:04:25,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2023-11-29 01:04:25,289 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 249 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:25,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 363 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 01:04:25,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-29 01:04:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 214. [2023-11-29 01:04:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.2444444444444445) internal successors, (168), 138 states have internal predecessors, (168), 48 states have call successors, (48), 26 states have call predecessors, (48), 30 states have return successors, (51), 49 states have call predecessors, (51), 47 states have call successors, (51) [2023-11-29 01:04:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 267 transitions. [2023-11-29 01:04:25,318 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 267 transitions. Word has length 175 [2023-11-29 01:04:25,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:25,319 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 267 transitions. [2023-11-29 01:04:25,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.571428571428571) internal successors, (64), 9 states have internal predecessors, (64), 7 states have call successors, (27), 9 states have call predecessors, (27), 2 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-29 01:04:25,319 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 267 transitions. [2023-11-29 01:04:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-29 01:04:25,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:25,322 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:25,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:04:25,323 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:25,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1566084831, now seen corresponding path program 1 times [2023-11-29 01:04:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526406363] [2023-11-29 01:04:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:25,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:27,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:27,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:27,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:04:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:27,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:04:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:04:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:27,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 01:04:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 01:04:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:04:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:04:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 01:04:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 01:04:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 01:04:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 01:04:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 01:04:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-29 01:04:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 01:04:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-29 01:04:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-29 01:04:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-11-29 01:04:28,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:28,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526406363] [2023-11-29 01:04:28,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526406363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:28,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:28,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 01:04:28,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653893956] [2023-11-29 01:04:28,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:28,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:04:28,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:28,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:04:28,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:04:28,735 INFO L87 Difference]: Start difference. First operand 214 states and 267 transitions. Second operand has 20 states, 18 states have (on average 3.611111111111111) internal successors, (65), 13 states have internal predecessors, (65), 9 states have call successors, (28), 9 states have call predecessors, (28), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2023-11-29 01:04:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:32,197 INFO L93 Difference]: Finished difference Result 317 states and 404 transitions. [2023-11-29 01:04:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:04:32,197 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.611111111111111) internal successors, (65), 13 states have internal predecessors, (65), 9 states have call successors, (28), 9 states have call predecessors, (28), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 187 [2023-11-29 01:04:32,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:32,199 INFO L225 Difference]: With dead ends: 317 [2023-11-29 01:04:32,199 INFO L226 Difference]: Without dead ends: 237 [2023-11-29 01:04:32,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=1233, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:04:32,201 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 285 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:32,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 451 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 01:04:32,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-29 01:04:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 216. [2023-11-29 01:04:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 136 states have (on average 1.2426470588235294) internal successors, (169), 140 states have internal predecessors, (169), 48 states have call successors, (48), 26 states have call predecessors, (48), 31 states have return successors, (53), 49 states have call predecessors, (53), 47 states have call successors, (53) [2023-11-29 01:04:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 270 transitions. [2023-11-29 01:04:32,223 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 270 transitions. Word has length 187 [2023-11-29 01:04:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:32,233 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 270 transitions. [2023-11-29 01:04:32,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.611111111111111) internal successors, (65), 13 states have internal predecessors, (65), 9 states have call successors, (28), 9 states have call predecessors, (28), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2023-11-29 01:04:32,234 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 270 transitions. [2023-11-29 01:04:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-29 01:04:32,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:32,236 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:32,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:04:32,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:32,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:32,237 INFO L85 PathProgramCache]: Analyzing trace with hash -583408003, now seen corresponding path program 1 times [2023-11-29 01:04:32,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:32,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81954830] [2023-11-29 01:04:32,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:32,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:04:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:04:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:04:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 01:04:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 01:04:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:33,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:04:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:04:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 01:04:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 01:04:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 01:04:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 01:04:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 01:04:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 01:04:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 01:04:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 01:04:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-29 01:04:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,774 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-29 01:04:34,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:34,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81954830] [2023-11-29 01:04:34,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81954830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:34,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:34,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 01:04:34,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356899355] [2023-11-29 01:04:34,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:34,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:04:34,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:04:34,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:04:34,777 INFO L87 Difference]: Start difference. First operand 216 states and 270 transitions. Second operand has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (27), 8 states have call predecessors, (27), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2023-11-29 01:04:37,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:37,161 INFO L93 Difference]: Finished difference Result 312 states and 396 transitions. [2023-11-29 01:04:37,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:04:37,162 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (27), 8 states have call predecessors, (27), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 191 [2023-11-29 01:04:37,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:37,164 INFO L225 Difference]: With dead ends: 312 [2023-11-29 01:04:37,164 INFO L226 Difference]: Without dead ends: 235 [2023-11-29 01:04:37,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:04:37,166 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 333 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:37,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 325 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:04:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-29 01:04:37,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 214. [2023-11-29 01:04:37,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.2444444444444445) internal successors, (168), 138 states have internal predecessors, (168), 48 states have call successors, (48), 26 states have call predecessors, (48), 30 states have return successors, (51), 49 states have call predecessors, (51), 47 states have call successors, (51) [2023-11-29 01:04:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 267 transitions. [2023-11-29 01:04:37,187 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 267 transitions. Word has length 191 [2023-11-29 01:04:37,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:37,187 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 267 transitions. [2023-11-29 01:04:37,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (27), 8 states have call predecessors, (27), 3 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2023-11-29 01:04:37,188 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 267 transitions. [2023-11-29 01:04:37,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 01:04:37,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:37,189 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:37,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:04:37,190 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:37,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:37,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1622028914, now seen corresponding path program 1 times [2023-11-29 01:04:37,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:37,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308018400] [2023-11-29 01:04:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:37,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:04:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:04:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:04:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 01:04:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 01:04:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 01:04:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:04:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 01:04:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 01:04:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 01:04:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 01:04:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 01:04:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-29 01:04:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 01:04:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-29 01:04:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:40,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-29 01:04:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:04:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-11-29 01:04:41,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308018400] [2023-11-29 01:04:41,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308018400] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903290524] [2023-11-29 01:04:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:41,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:41,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:41,122 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:41,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:04:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:41,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:04:41,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-29 01:04:41,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:41,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903290524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:41,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:04:41,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [27] total 32 [2023-11-29 01:04:41,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078769588] [2023-11-29 01:04:41,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:41,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:41,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:41,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:41,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=923, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:04:41,924 INFO L87 Difference]: Start difference. First operand 214 states and 267 transitions. Second operand has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-29 01:04:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:42,534 INFO L93 Difference]: Finished difference Result 418 states and 522 transitions. [2023-11-29 01:04:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:04:42,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 195 [2023-11-29 01:04:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:42,537 INFO L225 Difference]: With dead ends: 418 [2023-11-29 01:04:42,537 INFO L226 Difference]: Without dead ends: 216 [2023-11-29 01:04:42,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=983, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:04:42,539 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 2 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:42,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1003 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:04:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-29 01:04:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2023-11-29 01:04:42,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.237037037037037) internal successors, (167), 138 states have internal predecessors, (167), 48 states have call successors, (48), 26 states have call predecessors, (48), 30 states have return successors, (51), 49 states have call predecessors, (51), 47 states have call successors, (51) [2023-11-29 01:04:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 266 transitions. [2023-11-29 01:04:42,557 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 266 transitions. Word has length 195 [2023-11-29 01:04:42,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:42,558 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 266 transitions. [2023-11-29 01:04:42,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-29 01:04:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 266 transitions. [2023-11-29 01:04:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-29 01:04:42,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:42,559 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:42,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 01:04:42,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:42,760 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:42,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1926677847, now seen corresponding path program 1 times [2023-11-29 01:04:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283082777] [2023-11-29 01:04:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:04:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 01:04:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 01:04:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 01:04:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:04:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 01:04:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 01:04:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 01:04:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:04:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:04:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 01:04:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 01:04:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 01:04:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 01:04:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-29 01:04:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:46,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-29 01:04:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:46,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 01:04:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:46,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:04:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:46,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-29 01:04:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-29 01:04:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:46,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:04:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-11-29 01:04:46,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283082777] [2023-11-29 01:04:46,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283082777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069669223] [2023-11-29 01:04:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:46,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:46,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:46,315 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:46,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:04:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:46,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 2771 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:04:46,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:47,034 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-29 01:04:47,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:47,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069669223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:47,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:04:47,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [27] total 31 [2023-11-29 01:04:47,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671021716] [2023-11-29 01:04:47,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:47,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:04:47,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:47,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:04:47,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=863, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:04:47,037 INFO L87 Difference]: Start difference. First operand 214 states and 266 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-29 01:04:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:47,469 INFO L93 Difference]: Finished difference Result 382 states and 478 transitions. [2023-11-29 01:04:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:04:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 197 [2023-11-29 01:04:47,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:47,472 INFO L225 Difference]: With dead ends: 382 [2023-11-29 01:04:47,472 INFO L226 Difference]: Without dead ends: 216 [2023-11-29 01:04:47,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=921, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:04:47,474 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 2 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:47,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 827 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:04:47,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-29 01:04:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2023-11-29 01:04:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 132 states have (on average 1.2272727272727273) internal successors, (162), 135 states have internal predecessors, (162), 48 states have call successors, (48), 26 states have call predecessors, (48), 29 states have return successors, (50), 48 states have call predecessors, (50), 47 states have call successors, (50) [2023-11-29 01:04:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 260 transitions. [2023-11-29 01:04:47,505 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 260 transitions. Word has length 197 [2023-11-29 01:04:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:47,506 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 260 transitions. [2023-11-29 01:04:47,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-29 01:04:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 260 transitions. [2023-11-29 01:04:47,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 01:04:47,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:47,508 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 01:04:47,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:04:47,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:04:47,709 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:47,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:47,709 INFO L85 PathProgramCache]: Analyzing trace with hash 346978068, now seen corresponding path program 1 times [2023-11-29 01:04:47,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:47,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104522287] [2023-11-29 01:04:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:47,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:47,796 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:47,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319778958] [2023-11-29 01:04:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:47,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:47,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:47,798 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:47,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:04:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:48,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:04:48,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-29 01:04:48,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:48,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:48,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104522287] [2023-11-29 01:04:48,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:48,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319778958] [2023-11-29 01:04:48,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319778958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:48,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:48,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:04:48,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774196210] [2023-11-29 01:04:48,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:48,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:04:48,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:04:48,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:04:48,515 INFO L87 Difference]: Start difference. First operand 210 states and 260 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-29 01:04:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:48,908 INFO L93 Difference]: Finished difference Result 326 states and 412 transitions. [2023-11-29 01:04:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:04:48,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 203 [2023-11-29 01:04:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:48,911 INFO L225 Difference]: With dead ends: 326 [2023-11-29 01:04:48,911 INFO L226 Difference]: Without dead ends: 210 [2023-11-29 01:04:48,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:48,912 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 2 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:48,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 830 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:04:48,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-29 01:04:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 206. [2023-11-29 01:04:48,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 129 states have (on average 1.2170542635658914) internal successors, (157), 132 states have internal predecessors, (157), 48 states have call successors, (48), 26 states have call predecessors, (48), 28 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 01:04:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 254 transitions. [2023-11-29 01:04:48,941 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 254 transitions. Word has length 203 [2023-11-29 01:04:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:48,942 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 254 transitions. [2023-11-29 01:04:48,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-29 01:04:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 254 transitions. [2023-11-29 01:04:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-29 01:04:48,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:48,944 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:48,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:04:49,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:04:49,145 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:49,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1545438657, now seen corresponding path program 1 times [2023-11-29 01:04:49,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:49,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93234920] [2023-11-29 01:04:49,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:49,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:49,225 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:49,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214989143] [2023-11-29 01:04:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:49,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:49,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:49,227 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:49,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:04:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:49,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 01:04:49,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:50,140 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 27 treesize of output 1 [2023-11-29 01:04:50,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:04:50,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:04:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-29 01:04:50,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:51,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:51,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93234920] [2023-11-29 01:04:51,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:51,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214989143] [2023-11-29 01:04:51,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214989143] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:04:51,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:04:51,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-29 01:04:51,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387034917] [2023-11-29 01:04:51,239 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:51,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:04:51,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:51,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:04:51,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:04:51,241 INFO L87 Difference]: Start difference. First operand 206 states and 254 transitions. Second operand has 18 states, 14 states have (on average 7.142857142857143) internal successors, (100), 16 states have internal predecessors, (100), 7 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-29 01:04:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:56,947 INFO L93 Difference]: Finished difference Result 367 states and 460 transitions. [2023-11-29 01:04:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:04:56,947 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 7.142857142857143) internal successors, (100), 16 states have internal predecessors, (100), 7 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 209 [2023-11-29 01:04:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:56,949 INFO L225 Difference]: With dead ends: 367 [2023-11-29 01:04:56,949 INFO L226 Difference]: Without dead ends: 221 [2023-11-29 01:04:56,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:04:56,951 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 148 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:56,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 2200 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 01:04:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-29 01:04:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 214. [2023-11-29 01:04:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 134 states have (on average 1.208955223880597) internal successors, (162), 138 states have internal predecessors, (162), 48 states have call successors, (48), 26 states have call predecessors, (48), 31 states have return successors, (55), 49 states have call predecessors, (55), 47 states have call successors, (55) [2023-11-29 01:04:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 265 transitions. [2023-11-29 01:04:56,974 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 265 transitions. Word has length 209 [2023-11-29 01:04:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:56,974 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 265 transitions. [2023-11-29 01:04:56,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 7.142857142857143) internal successors, (100), 16 states have internal predecessors, (100), 7 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-29 01:04:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 265 transitions. [2023-11-29 01:04:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 01:04:56,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:56,976 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:56,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:04:57,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:57,177 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:57,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:57,177 INFO L85 PathProgramCache]: Analyzing trace with hash -332618278, now seen corresponding path program 2 times [2023-11-29 01:04:57,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:57,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590674756] [2023-11-29 01:04:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:57,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:57,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:57,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907886002] [2023-11-29 01:04:57,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:04:57,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:57,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:57,265 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:57,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:04:58,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:04:58,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:04:58,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 01:04:58,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:02,340 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3| Int) (|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$#5.offset| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3|) 0))) (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3| Int) (|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$#5.base| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_3|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_3|) 0)))) is different from true [2023-11-29 01:05:02,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 33 [2023-11-29 01:05:02,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 47 [2023-11-29 01:05:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 84 proven. 4 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-11-29 01:05:03,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:04,621 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2023-11-29 01:05:04,621 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 32 treesize of output 31 [2023-11-29 01:05:04,634 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-11-29 01:05:04,634 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 28 treesize of output 12 [2023-11-29 01:05:04,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:04,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590674756] [2023-11-29 01:05:04,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:05:04,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907886002] [2023-11-29 01:05:04,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907886002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:05:04,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:05:04,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-11-29 01:05:04,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10808865] [2023-11-29 01:05:04,807 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:04,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:05:04,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:04,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:05:04,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=879, Unknown=1, NotChecked=60, Total=1056 [2023-11-29 01:05:04,809 INFO L87 Difference]: Start difference. First operand 214 states and 265 transitions. Second operand has 23 states, 19 states have (on average 4.631578947368421) internal successors, (88), 21 states have internal predecessors, (88), 10 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) [2023-11-29 01:05:09,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:15,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:19,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:23,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:28,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:32,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:36,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:40,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:44,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:48,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:52,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:05:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:56,982 INFO L93 Difference]: Finished difference Result 452 states and 567 transitions. [2023-11-29 01:05:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 01:05:56,982 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 4.631578947368421) internal successors, (88), 21 states have internal predecessors, (88), 10 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) Word has length 211 [2023-11-29 01:05:56,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:56,984 INFO L225 Difference]: With dead ends: 452 [2023-11-29 01:05:56,985 INFO L226 Difference]: Without dead ends: 347 [2023-11-29 01:05:56,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=433, Invalid=2992, Unknown=1, NotChecked=114, Total=3540 [2023-11-29 01:05:56,987 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 298 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 43 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 555 IncrementalHoareTripleChecker+Unchecked, 50.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:56,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 2005 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1430 Invalid, 11 Unknown, 555 Unchecked, 50.5s Time] [2023-11-29 01:05:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-29 01:05:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 338. [2023-11-29 01:05:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 223 states have (on average 1.251121076233184) internal successors, (279), 233 states have internal predecessors, (279), 63 states have call successors, (63), 36 states have call predecessors, (63), 51 states have return successors, (80), 68 states have call predecessors, (80), 61 states have call successors, (80) [2023-11-29 01:05:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 422 transitions. [2023-11-29 01:05:57,028 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 422 transitions. Word has length 211 [2023-11-29 01:05:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:57,028 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 422 transitions. [2023-11-29 01:05:57,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 4.631578947368421) internal successors, (88), 21 states have internal predecessors, (88), 10 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 8 states have call predecessors, (28), 9 states have call successors, (28) [2023-11-29 01:05:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 422 transitions. [2023-11-29 01:05:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-29 01:05:57,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:57,030 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:57,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:05:57,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:57,231 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:57,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1646521138, now seen corresponding path program 1 times [2023-11-29 01:05:57,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:57,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254947433] [2023-11-29 01:05:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:57,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:57,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:57,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652788659] [2023-11-29 01:05:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:57,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:57,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:57,300 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:57,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:05:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:57,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:05:57,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:02,055 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$#1.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$#1.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true [2023-11-29 01:06:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-29 01:06:02,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:06:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254947433] [2023-11-29 01:06:02,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:06:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652788659] [2023-11-29 01:06:02,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652788659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:02,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:02,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:06:02,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818228349] [2023-11-29 01:06:02,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:02,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:06:02,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:06:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2023-11-29 01:06:02,158 INFO L87 Difference]: Start difference. First operand 338 states and 422 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-29 01:06:07,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:06:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:08,055 INFO L93 Difference]: Finished difference Result 530 states and 684 transitions. [2023-11-29 01:06:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:06:08,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 215 [2023-11-29 01:06:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:08,058 INFO L225 Difference]: With dead ends: 530 [2023-11-29 01:06:08,058 INFO L226 Difference]: Without dead ends: 324 [2023-11-29 01:06:08,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2023-11-29 01:06:08,060 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 7 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:08,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 830 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 1 Unknown, 209 Unchecked, 5.8s Time] [2023-11-29 01:06:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-29 01:06:08,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 320. [2023-11-29 01:06:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 211 states have (on average 1.2369668246445498) internal successors, (261), 219 states have internal predecessors, (261), 59 states have call successors, (59), 34 states have call predecessors, (59), 49 states have return successors, (74), 66 states have call predecessors, (74), 57 states have call successors, (74) [2023-11-29 01:06:08,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 394 transitions. [2023-11-29 01:06:08,099 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 394 transitions. Word has length 215 [2023-11-29 01:06:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:08,099 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 394 transitions. [2023-11-29 01:06:08,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-29 01:06:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 394 transitions. [2023-11-29 01:06:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-29 01:06:08,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:08,101 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-29 01:06:08,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:06:08,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:06:08,301 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:08,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash -704619018, now seen corresponding path program 1 times [2023-11-29 01:06:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694510536] [2023-11-29 01:06:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:08,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:06:08,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754006645] [2023-11-29 01:06:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:08,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:08,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:08,384 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:08,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:06:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:09,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 01:06:09,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-29 01:06:09,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:06:09,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:09,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694510536] [2023-11-29 01:06:09,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:06:09,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754006645] [2023-11-29 01:06:09,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754006645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:09,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:09,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 01:06:09,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797289384] [2023-11-29 01:06:09,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:09,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:06:09,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:09,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:06:09,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:06:09,109 INFO L87 Difference]: Start difference. First operand 320 states and 394 transitions. Second operand has 12 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-29 01:06:09,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:09,915 INFO L93 Difference]: Finished difference Result 488 states and 616 transitions. [2023-11-29 01:06:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:06:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) Word has length 215 [2023-11-29 01:06:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:09,918 INFO L225 Difference]: With dead ends: 488 [2023-11-29 01:06:09,918 INFO L226 Difference]: Without dead ends: 321 [2023-11-29 01:06:09,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:06:09,919 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 3 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:09,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1824 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:06:09,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-29 01:06:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2023-11-29 01:06:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 211 states have (on average 1.2369668246445498) internal successors, (261), 219 states have internal predecessors, (261), 59 states have call successors, (59), 34 states have call predecessors, (59), 49 states have return successors, (73), 66 states have call predecessors, (73), 57 states have call successors, (73) [2023-11-29 01:06:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 393 transitions. [2023-11-29 01:06:09,955 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 393 transitions. Word has length 215 [2023-11-29 01:06:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:09,955 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 393 transitions. [2023-11-29 01:06:09,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-29 01:06:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 393 transitions. [2023-11-29 01:06:09,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-11-29 01:06:09,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:09,957 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:09,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 01:06:10,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:06:10,157 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:10,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash 914982993, now seen corresponding path program 2 times [2023-11-29 01:06:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540235177] [2023-11-29 01:06:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:10,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:10,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:06:10,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998080025] [2023-11-29 01:06:10,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:06:10,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:10,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:10,224 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:10,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:06:10,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:06:10,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:06:10,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 01:06:10,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-29 01:06:11,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:06:11,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540235177] [2023-11-29 01:06:11,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:06:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998080025] [2023-11-29 01:06:11,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998080025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:11,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:11,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 01:06:11,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024037105] [2023-11-29 01:06:11,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:11,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:06:11,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:06:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:06:11,030 INFO L87 Difference]: Start difference. First operand 320 states and 393 transitions. Second operand has 12 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-29 01:06:11,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:11,974 INFO L93 Difference]: Finished difference Result 539 states and 668 transitions. [2023-11-29 01:06:11,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:06:11,975 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) Word has length 217 [2023-11-29 01:06:11,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:11,977 INFO L225 Difference]: With dead ends: 539 [2023-11-29 01:06:11,977 INFO L226 Difference]: Without dead ends: 313 [2023-11-29 01:06:11,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:06:11,978 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 3 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:11,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1813 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:06:11,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-29 01:06:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2023-11-29 01:06:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 206 states have (on average 1.2378640776699028) internal successors, (255), 213 states have internal predecessors, (255), 59 states have call successors, (59), 34 states have call predecessors, (59), 46 states have return successors, (70), 64 states have call predecessors, (70), 57 states have call successors, (70) [2023-11-29 01:06:12,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 384 transitions. [2023-11-29 01:06:12,015 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 384 transitions. Word has length 217 [2023-11-29 01:06:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:12,015 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 384 transitions. [2023-11-29 01:06:12,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 3 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (31), 5 states have call predecessors, (31), 3 states have call successors, (31) [2023-11-29 01:06:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 384 transitions. [2023-11-29 01:06:12,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-29 01:06:12,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:12,017 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:12,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:06:12,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:12,217 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:12,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1888712492, now seen corresponding path program 1 times [2023-11-29 01:06:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:12,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365187115] [2023-11-29 01:06:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:12,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:12,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:06:12,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418124220] [2023-11-29 01:06:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:12,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:12,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:12,298 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:12,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:06:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:12,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 3010 conjuncts, 90 conjunts are in the unsatisfiable core [2023-11-29 01:06:12,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:13,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:06:13,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 01:06:13,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-29 01:06:13,597 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 12 treesize of output 8 [2023-11-29 01:06:14,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 01:06:14,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 16 [2023-11-29 01:06:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 137 proven. 10 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-29 01:06:14,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:06:15,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:15,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365187115] [2023-11-29 01:06:15,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:06:15,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418124220] [2023-11-29 01:06:15,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418124220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:06:15,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:06:15,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2023-11-29 01:06:15,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744479695] [2023-11-29 01:06:15,471 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:06:15,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:06:15,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:06:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=999, Unknown=1, NotChecked=0, Total=1122 [2023-11-29 01:06:15,473 INFO L87 Difference]: Start difference. First operand 312 states and 384 transitions. Second operand has 24 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 11 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-29 01:06:21,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:06:26,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:06:30,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:06:34,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:06:38,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:06:42,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:06:46,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:06:50,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:06:54,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:06:58,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:02,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:06,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:10,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:14,342 WARN L539 Checker$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 01:07:20,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:20,573 INFO L93 Difference]: Finished difference Result 573 states and 714 transitions. [2023-11-29 01:07:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:07:20,574 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 11 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 219 [2023-11-29 01:07:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:20,577 INFO L225 Difference]: With dead ends: 573 [2023-11-29 01:07:20,577 INFO L226 Difference]: Without dead ends: 405 [2023-11-29 01:07:20,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 194 SyntacticMatches, 20 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=373, Invalid=2596, Unknown=1, NotChecked=0, Total=2970 [2023-11-29 01:07:20,580 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 323 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 3202 mSolverCounterSat, 125 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3202 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:20,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1165 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3202 Invalid, 14 Unknown, 0 Unchecked, 64.0s Time] [2023-11-29 01:07:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-29 01:07:20,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 303. [2023-11-29 01:07:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 206 states have (on average 1.2135922330097086) internal successors, (250), 209 states have internal predecessors, (250), 53 states have call successors, (53), 38 states have call predecessors, (53), 43 states have return successors, (57), 55 states have call predecessors, (57), 52 states have call successors, (57) [2023-11-29 01:07:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 360 transitions. [2023-11-29 01:07:20,634 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 360 transitions. Word has length 219 [2023-11-29 01:07:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:20,635 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 360 transitions. [2023-11-29 01:07:20,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 11 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-29 01:07:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 360 transitions. [2023-11-29 01:07:20,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-29 01:07:20,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:20,637 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:20,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:07:20,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:20,838 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:20,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash -385756027, now seen corresponding path program 1 times [2023-11-29 01:07:20,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:20,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176543116] [2023-11-29 01:07:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:20,910 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:20,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277899286] [2023-11-29 01:07:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:20,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:20,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:20,911 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:20,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:07:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:21,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 124 conjunts are in the unsatisfiable core [2023-11-29 01:07:21,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:21,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:07:21,877 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 27 treesize of output 1 [2023-11-29 01:07:21,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:23,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-29 01:07:23,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 01:07:23,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 01:07:23,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 36 [2023-11-29 01:07:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 222 proven. 25 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 01:07:25,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:26,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176543116] [2023-11-29 01:07:26,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277899286] [2023-11-29 01:07:26,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277899286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:07:26,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:07:26,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2023-11-29 01:07:26,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923286215] [2023-11-29 01:07:26,088 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:26,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 01:07:26,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:26,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 01:07:26,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1192, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 01:07:26,090 INFO L87 Difference]: Start difference. First operand 303 states and 360 transitions. Second operand has 32 states, 25 states have (on average 4.92) internal successors, (123), 28 states have internal predecessors, (123), 16 states have call successors, (38), 7 states have call predecessors, (38), 9 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2023-11-29 01:07:35,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:35,651 INFO L93 Difference]: Finished difference Result 509 states and 636 transitions. [2023-11-29 01:07:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-29 01:07:35,652 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 25 states have (on average 4.92) internal successors, (123), 28 states have internal predecessors, (123), 16 states have call successors, (38), 7 states have call predecessors, (38), 9 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) Word has length 227 [2023-11-29 01:07:35,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:35,654 INFO L225 Difference]: With dead ends: 509 [2023-11-29 01:07:35,654 INFO L226 Difference]: Without dead ends: 399 [2023-11-29 01:07:35,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 186 SyntacticMatches, 18 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=415, Invalid=4277, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 01:07:35,656 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 262 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 2917 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 3321 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:35,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 3321 Invalid, 2988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2917 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-29 01:07:35,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-11-29 01:07:35,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 384. [2023-11-29 01:07:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 265 states have (on average 1.2490566037735849) internal successors, (331), 270 states have internal predecessors, (331), 64 states have call successors, (64), 43 states have call predecessors, (64), 54 states have return successors, (73), 70 states have call predecessors, (73), 62 states have call successors, (73) [2023-11-29 01:07:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 468 transitions. [2023-11-29 01:07:35,716 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 468 transitions. Word has length 227 [2023-11-29 01:07:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:35,716 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 468 transitions. [2023-11-29 01:07:35,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 25 states have (on average 4.92) internal successors, (123), 28 states have internal predecessors, (123), 16 states have call successors, (38), 7 states have call predecessors, (38), 9 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2023-11-29 01:07:35,717 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 468 transitions. [2023-11-29 01:07:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-29 01:07:35,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:35,718 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:07:35,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:07:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:07:35,919 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:35,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1088963766, now seen corresponding path program 1 times [2023-11-29 01:07:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:35,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71288240] [2023-11-29 01:07:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:35,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:35,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186913476] [2023-11-29 01:07:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:35,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:35,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:35,976 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:35,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:07:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:36,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-29 01:07:36,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:37,000 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 27 treesize of output 1 [2023-11-29 01:07:37,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:07:37,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:07:38,064 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 22 treesize of output 14 [2023-11-29 01:07:38,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 01:07:38,222 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 22 treesize of output 14 [2023-11-29 01:07:39,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:07:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 167 proven. 100 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 01:07:39,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:40,553 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 83 treesize of output 79 [2023-11-29 01:07:40,556 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 125 treesize of output 117 [2023-11-29 01:07:40,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:07:40,572 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 67 treesize of output 63 [2023-11-29 01:07:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 30 proven. 35 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-29 01:07:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71288240] [2023-11-29 01:07:41,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186913476] [2023-11-29 01:07:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186913476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:41,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:41,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 21] total 52 [2023-11-29 01:07:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450575339] [2023-11-29 01:07:41,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:41,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 01:07:41,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 01:07:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2474, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 01:07:41,154 INFO L87 Difference]: Start difference. First operand 384 states and 468 transitions. Second operand has 52 states, 43 states have (on average 4.255813953488372) internal successors, (183), 43 states have internal predecessors, (183), 24 states have call successors, (61), 9 states have call predecessors, (61), 14 states have return successors, (56), 23 states have call predecessors, (56), 22 states have call successors, (56) [2023-11-29 01:07:47,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:52,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:07:58,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:02,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:06,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:10,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:14,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:18,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:22,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:27,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:31,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:35,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:40,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:44,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:48,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:52,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:08:56,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:09:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:09:02,795 INFO L93 Difference]: Finished difference Result 534 states and 656 transitions. [2023-11-29 01:09:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 01:09:02,796 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 43 states have (on average 4.255813953488372) internal successors, (183), 43 states have internal predecessors, (183), 24 states have call successors, (61), 9 states have call predecessors, (61), 14 states have return successors, (56), 23 states have call predecessors, (56), 22 states have call successors, (56) Word has length 229 [2023-11-29 01:09:02,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:09:02,799 INFO L225 Difference]: With dead ends: 534 [2023-11-29 01:09:02,799 INFO L226 Difference]: Without dead ends: 407 [2023-11-29 01:09:02,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 396 SyntacticMatches, 16 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=509, Invalid=6631, Unknown=0, NotChecked=0, Total=7140 [2023-11-29 01:09:02,802 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 275 mSDsluCounter, 3903 mSDsCounter, 0 mSdLazyCounter, 3482 mSolverCounterSat, 140 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 3639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 3482 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:09:02,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 4064 Invalid, 3639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 3482 Invalid, 17 Unknown, 0 Unchecked, 79.0s Time] [2023-11-29 01:09:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-29 01:09:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 385. [2023-11-29 01:09:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 266 states have (on average 1.2481203007518797) internal successors, (332), 271 states have internal predecessors, (332), 64 states have call successors, (64), 43 states have call predecessors, (64), 54 states have return successors, (73), 70 states have call predecessors, (73), 62 states have call successors, (73) [2023-11-29 01:09:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 469 transitions. [2023-11-29 01:09:02,871 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 469 transitions. Word has length 229 [2023-11-29 01:09:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:09:02,871 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 469 transitions. [2023-11-29 01:09:02,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 43 states have (on average 4.255813953488372) internal successors, (183), 43 states have internal predecessors, (183), 24 states have call successors, (61), 9 states have call predecessors, (61), 14 states have return successors, (56), 23 states have call predecessors, (56), 22 states have call successors, (56) [2023-11-29 01:09:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 469 transitions. [2023-11-29 01:09:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-29 01:09:02,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:09:02,873 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:02,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:09:03,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 01:09:03,074 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:09:03,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:03,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1539309665, now seen corresponding path program 1 times [2023-11-29 01:09:03,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:03,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023108699] [2023-11-29 01:09:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:03,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:03,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:09:03,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047221316] [2023-11-29 01:09:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:03,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:03,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:03,137 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:03,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:09:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:03,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-29 01:09:03,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:04,050 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 27 treesize of output 1 [2023-11-29 01:09:04,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:09:04,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:09:05,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-29 01:09:05,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 01:09:05,182 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 30 treesize of output 22 [2023-11-29 01:09:05,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 24 [2023-11-29 01:09:05,985 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 13 treesize of output 7 [2023-11-29 01:09:05,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 29 [2023-11-29 01:09:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 162 proven. 25 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-29 01:09:07,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:09:08,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023108699] [2023-11-29 01:09:08,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:09:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047221316] [2023-11-29 01:09:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047221316] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:08,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:09:08,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2023-11-29 01:09:08,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171029603] [2023-11-29 01:09:08,231 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:09:08,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 01:09:08,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 01:09:08,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 01:09:08,233 INFO L87 Difference]: Start difference. First operand 385 states and 469 transitions. Second operand has 31 states, 25 states have (on average 4.32) internal successors, (108), 27 states have internal predecessors, (108), 14 states have call successors, (36), 6 states have call predecessors, (36), 9 states have return successors, (34), 14 states have call predecessors, (34), 13 states have call successors, (34) [2023-11-29 01:09:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:09:28,296 INFO L93 Difference]: Finished difference Result 486 states and 604 transitions. [2023-11-29 01:09:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 01:09:28,297 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 4.32) internal successors, (108), 27 states have internal predecessors, (108), 14 states have call successors, (36), 6 states have call predecessors, (36), 9 states have return successors, (34), 14 states have call predecessors, (34), 13 states have call successors, (34) Word has length 231 [2023-11-29 01:09:28,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:09:28,300 INFO L225 Difference]: With dead ends: 486 [2023-11-29 01:09:28,300 INFO L226 Difference]: Without dead ends: 404 [2023-11-29 01:09:28,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 192 SyntacticMatches, 20 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=411, Invalid=4281, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 01:09:28,302 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 279 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 5293 mSolverCounterSat, 97 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 5410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 5293 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:09:28,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1525 Invalid, 5410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 5293 Invalid, 20 Unknown, 0 Unchecked, 17.0s Time] [2023-11-29 01:09:28,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-29 01:09:28,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 302. [2023-11-29 01:09:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 206 states have (on average 1.2087378640776698) internal successors, (249), 208 states have internal predecessors, (249), 53 states have call successors, (53), 38 states have call predecessors, (53), 42 states have return successors, (56), 55 states have call predecessors, (56), 52 states have call successors, (56) [2023-11-29 01:09:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 358 transitions. [2023-11-29 01:09:28,362 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 358 transitions. Word has length 231 [2023-11-29 01:09:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:09:28,362 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 358 transitions. [2023-11-29 01:09:28,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 4.32) internal successors, (108), 27 states have internal predecessors, (108), 14 states have call successors, (36), 6 states have call predecessors, (36), 9 states have return successors, (34), 14 states have call predecessors, (34), 13 states have call successors, (34) [2023-11-29 01:09:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 358 transitions. [2023-11-29 01:09:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-29 01:09:28,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:09:28,364 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:28,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:09:28,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:09:28,564 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:09:28,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:28,565 INFO L85 PathProgramCache]: Analyzing trace with hash -29453323, now seen corresponding path program 1 times [2023-11-29 01:09:28,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:28,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984268019] [2023-11-29 01:09:28,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:28,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:28,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:09:28,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737085907] [2023-11-29 01:09:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:28,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:28,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:28,629 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:28,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:09:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:33,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 01:09:33,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 154 proven. 32 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-29 01:09:33,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:09:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-29 01:09:34,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:34,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984268019] [2023-11-29 01:09:34,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:09:34,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737085907] [2023-11-29 01:09:34,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737085907] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:34,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:09:34,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2023-11-29 01:09:34,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080429830] [2023-11-29 01:09:34,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:34,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:09:34,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:34,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:09:34,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:09:34,063 INFO L87 Difference]: Start difference. First operand 302 states and 358 transitions. Second operand has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-29 01:09:34,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:09:34,254 INFO L93 Difference]: Finished difference Result 473 states and 569 transitions. [2023-11-29 01:09:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:09:34,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 231 [2023-11-29 01:09:34,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:09:34,257 INFO L225 Difference]: With dead ends: 473 [2023-11-29 01:09:34,257 INFO L226 Difference]: Without dead ends: 303 [2023-11-29 01:09:34,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:09:34,258 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:09:34,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:09:34,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-29 01:09:34,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2023-11-29 01:09:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 207 states have (on average 1.2077294685990339) internal successors, (250), 209 states have internal predecessors, (250), 53 states have call successors, (53), 38 states have call predecessors, (53), 42 states have return successors, (56), 55 states have call predecessors, (56), 52 states have call successors, (56) [2023-11-29 01:09:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 359 transitions. [2023-11-29 01:09:34,317 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 359 transitions. Word has length 231 [2023-11-29 01:09:34,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:09:34,318 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 359 transitions. [2023-11-29 01:09:34,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-29 01:09:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 359 transitions. [2023-11-29 01:09:34,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-29 01:09:34,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:09:34,319 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:34,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:09:34,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:09:34,520 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:09:34,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:34,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1733294548, now seen corresponding path program 1 times [2023-11-29 01:09:34,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:34,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366409585] [2023-11-29 01:09:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:34,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:34,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:09:34,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491408963] [2023-11-29 01:09:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:34,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:34,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:34,589 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:34,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:09:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:35,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 3088 conjuncts, 115 conjunts are in the unsatisfiable core [2023-11-29 01:09:35,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:35,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:09:35,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:09:35,748 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 27 treesize of output 1 [2023-11-29 01:09:37,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-11-29 01:09:38,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-29 01:09:38,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-11-29 01:09:38,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 01:09:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 189 proven. 101 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 01:09:38,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:09:41,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366409585] [2023-11-29 01:09:41,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:09:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491408963] [2023-11-29 01:09:41,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491408963] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:41,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:09:41,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2023-11-29 01:09:41,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194103846] [2023-11-29 01:09:41,254 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:09:41,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 01:09:41,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:41,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 01:09:41,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2593, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 01:09:41,257 INFO L87 Difference]: Start difference. First operand 303 states and 359 transitions. Second operand has 35 states, 29 states have (on average 5.0) internal successors, (145), 30 states have internal predecessors, (145), 15 states have call successors, (39), 8 states have call predecessors, (39), 12 states have return successors, (36), 14 states have call predecessors, (36), 14 states have call successors, (36) [2023-11-29 01:09:46,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:09:53,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:09:58,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:02,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:06,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:10,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:15,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:19,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:23,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:27,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:32,714 WARN L539 Checker$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 01:10:36,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:41,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:45,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:50,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:10:56,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:11:00,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:11:04,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:11:08,474 WARN L539 Checker$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 01:11:15,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:15,137 INFO L93 Difference]: Finished difference Result 468 states and 562 transitions. [2023-11-29 01:11:15,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-29 01:11:15,138 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 29 states have (on average 5.0) internal successors, (145), 30 states have internal predecessors, (145), 15 states have call successors, (39), 8 states have call predecessors, (39), 12 states have return successors, (36), 14 states have call predecessors, (36), 14 states have call successors, (36) Word has length 232 [2023-11-29 01:11:15,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:15,140 INFO L225 Difference]: With dead ends: 468 [2023-11-29 01:11:15,140 INFO L226 Difference]: Without dead ends: 341 [2023-11-29 01:11:15,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 322 SyntacticMatches, 15 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2194 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=678, Invalid=8828, Unknown=0, NotChecked=0, Total=9506 [2023-11-29 01:11:15,143 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 317 mSDsluCounter, 3814 mSDsCounter, 0 mSdLazyCounter, 3638 mSolverCounterSat, 151 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 3808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3638 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:15,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 3994 Invalid, 3808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3638 Invalid, 19 Unknown, 0 Unchecked, 89.6s Time] [2023-11-29 01:11:15,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-29 01:11:15,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 330. [2023-11-29 01:11:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 228 states have (on average 1.1973684210526316) internal successors, (273), 230 states have internal predecessors, (273), 55 states have call successors, (55), 42 states have call predecessors, (55), 46 states have return successors, (58), 57 states have call predecessors, (58), 54 states have call successors, (58) [2023-11-29 01:11:15,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 386 transitions. [2023-11-29 01:11:15,212 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 386 transitions. Word has length 232 [2023-11-29 01:11:15,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:15,213 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 386 transitions. [2023-11-29 01:11:15,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 29 states have (on average 5.0) internal successors, (145), 30 states have internal predecessors, (145), 15 states have call successors, (39), 8 states have call predecessors, (39), 12 states have return successors, (36), 14 states have call predecessors, (36), 14 states have call successors, (36) [2023-11-29 01:11:15,213 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 386 transitions. [2023-11-29 01:11:15,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-29 01:11:15,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:15,214 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:15,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:11:15,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:11:15,415 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:11:15,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2082357253, now seen corresponding path program 1 times [2023-11-29 01:11:15,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:15,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841897986] [2023-11-29 01:11:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:15,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:15,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:15,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596347511] [2023-11-29 01:11:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:15,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:15,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:15,487 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:15,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:11:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:17,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 3088 conjuncts, 171 conjunts are in the unsatisfiable core [2023-11-29 01:11:17,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:17,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:11:17,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:11:17,431 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 27 treesize of output 1 [2023-11-29 01:11:19,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-29 01:11:19,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 01:11:19,659 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 31 treesize of output 23 [2023-11-29 01:11:22,795 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-29 01:11:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 222 proven. 29 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 01:11:22,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:24,533 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 51 treesize of output 47 [2023-11-29 01:11:24,715 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 42 treesize of output 38 [2023-11-29 01:11:24,814 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 35 treesize of output 27 [2023-11-29 01:11:24,816 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 27 treesize of output 19 [2023-11-29 01:11:25,437 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 35 treesize of output 27 [2023-11-29 01:11:25,441 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 27 treesize of output 19 [2023-11-29 01:11:26,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:26,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841897986] [2023-11-29 01:11:26,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596347511] [2023-11-29 01:11:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596347511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:26,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:26,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2023-11-29 01:11:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913850252] [2023-11-29 01:11:26,082 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:26,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 01:11:26,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 01:11:26,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2267, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 01:11:26,085 INFO L87 Difference]: Start difference. First operand 330 states and 386 transitions. Second operand has 38 states, 29 states have (on average 4.655172413793103) internal successors, (135), 32 states have internal predecessors, (135), 16 states have call successors, (39), 6 states have call predecessors, (39), 11 states have return successors, (37), 15 states have call predecessors, (37), 16 states have call successors, (37) [2023-11-29 01:11:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:11:52,117 INFO L93 Difference]: Finished difference Result 859 states and 1014 transitions. [2023-11-29 01:11:52,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-29 01:11:52,117 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 29 states have (on average 4.655172413793103) internal successors, (135), 32 states have internal predecessors, (135), 16 states have call successors, (39), 6 states have call predecessors, (39), 11 states have return successors, (37), 15 states have call predecessors, (37), 16 states have call successors, (37) Word has length 234 [2023-11-29 01:11:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:11:52,121 INFO L225 Difference]: With dead ends: 859 [2023-11-29 01:11:52,121 INFO L226 Difference]: Without dead ends: 663 [2023-11-29 01:11:52,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 222 SyntacticMatches, 16 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2170 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=650, Invalid=8280, Unknown=0, NotChecked=0, Total=8930 [2023-11-29 01:11:52,124 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 366 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 5443 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 5443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:11:52,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1994 Invalid, 5552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [109 Valid, 5443 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2023-11-29 01:11:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-11-29 01:11:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 614. [2023-11-29 01:11:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 430 states have (on average 1.1930232558139535) internal successors, (513), 435 states have internal predecessors, (513), 95 states have call successors, (95), 74 states have call predecessors, (95), 88 states have return successors, (111), 104 states have call predecessors, (111), 93 states have call successors, (111) [2023-11-29 01:11:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 719 transitions. [2023-11-29 01:11:52,366 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 719 transitions. Word has length 234 [2023-11-29 01:11:52,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:11:52,366 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 719 transitions. [2023-11-29 01:11:52,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 29 states have (on average 4.655172413793103) internal successors, (135), 32 states have internal predecessors, (135), 16 states have call successors, (39), 6 states have call predecessors, (39), 11 states have return successors, (37), 15 states have call predecessors, (37), 16 states have call successors, (37) [2023-11-29 01:11:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 719 transitions. [2023-11-29 01:11:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-29 01:11:52,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:11:52,369 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:52,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 01:11:52,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:11:52,570 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:11:52,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2036422655, now seen corresponding path program 2 times [2023-11-29 01:11:52,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:52,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815074926] [2023-11-29 01:11:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:52,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:52,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:11:52,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930661580] [2023-11-29 01:11:52,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:52,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:52,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:52,657 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:52,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:11:53,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:53,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:53,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 3099 conjuncts, 106 conjunts are in the unsatisfiable core [2023-11-29 01:11:53,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:54,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2023-11-29 01:11:54,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2023-11-29 01:11:54,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 35 [2023-11-29 01:11:54,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 42 [2023-11-29 01:11:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 107 proven. 7 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-11-29 01:11:56,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:57,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:57,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815074926] [2023-11-29 01:11:57,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:11:57,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930661580] [2023-11-29 01:11:57,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930661580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:57,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:57,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2023-11-29 01:11:57,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319980053] [2023-11-29 01:11:57,464 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:57,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 01:11:57,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:57,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 01:11:57,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1515, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 01:11:57,466 INFO L87 Difference]: Start difference. First operand 614 states and 719 transitions. Second operand has 34 states, 25 states have (on average 3.88) internal successors, (97), 29 states have internal predecessors, (97), 12 states have call successors, (33), 4 states have call predecessors, (33), 8 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2023-11-29 01:12:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:06,052 INFO L93 Difference]: Finished difference Result 983 states and 1207 transitions. [2023-11-29 01:12:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 01:12:06,053 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 25 states have (on average 3.88) internal successors, (97), 29 states have internal predecessors, (97), 12 states have call successors, (33), 4 states have call predecessors, (33), 8 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) Word has length 234 [2023-11-29 01:12:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:06,056 INFO L225 Difference]: With dead ends: 983 [2023-11-29 01:12:06,056 INFO L226 Difference]: Without dead ends: 738 [2023-11-29 01:12:06,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=405, Invalid=4997, Unknown=0, NotChecked=0, Total=5402 [2023-11-29 01:12:06,057 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 199 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:06,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2437 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-29 01:12:06,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-11-29 01:12:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 711. [2023-11-29 01:12:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 499 states have (on average 1.2104208416833668) internal successors, (604), 507 states have internal predecessors, (604), 108 states have call successors, (108), 80 states have call predecessors, (108), 103 states have return successors, (132), 123 states have call predecessors, (132), 104 states have call successors, (132) [2023-11-29 01:12:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 844 transitions. [2023-11-29 01:12:06,335 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 844 transitions. Word has length 234 [2023-11-29 01:12:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:06,335 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 844 transitions. [2023-11-29 01:12:06,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 25 states have (on average 3.88) internal successors, (97), 29 states have internal predecessors, (97), 12 states have call successors, (33), 4 states have call predecessors, (33), 8 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2023-11-29 01:12:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 844 transitions. [2023-11-29 01:12:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 01:12:06,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:06,338 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:06,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 01:12:06,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:12:06,538 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:12:06,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash 667095323, now seen corresponding path program 1 times [2023-11-29 01:12:06,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:06,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099950945] [2023-11-29 01:12:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:06,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:06,607 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:06,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553917812] [2023-11-29 01:12:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:06,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:06,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:06,608 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:06,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:12:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:07,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 3101 conjuncts, 132 conjunts are in the unsatisfiable core [2023-11-29 01:12:07,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:07,501 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 27 treesize of output 1 [2023-11-29 01:12:07,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:12:07,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:12:09,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-29 01:12:09,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 01:12:10,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 01:12:10,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 37 [2023-11-29 01:12:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 226 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 01:12:12,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:13,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:13,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099950945] [2023-11-29 01:12:13,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:13,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553917812] [2023-11-29 01:12:13,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553917812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:13,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:13,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2023-11-29 01:12:13,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849269153] [2023-11-29 01:12:13,476 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:13,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 01:12:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 01:12:13,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:12:13,478 INFO L87 Difference]: Start difference. First operand 711 states and 844 transitions. Second operand has 38 states, 29 states have (on average 4.827586206896552) internal successors, (140), 33 states have internal predecessors, (140), 17 states have call successors, (39), 8 states have call predecessors, (39), 11 states have return successors, (36), 15 states have call predecessors, (36), 15 states have call successors, (36) [2023-11-29 01:12:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:32,679 INFO L93 Difference]: Finished difference Result 751 states and 883 transitions. [2023-11-29 01:12:32,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-29 01:12:32,680 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 29 states have (on average 4.827586206896552) internal successors, (140), 33 states have internal predecessors, (140), 17 states have call successors, (39), 8 states have call predecessors, (39), 11 states have return successors, (36), 15 states have call predecessors, (36), 15 states have call successors, (36) Word has length 235 [2023-11-29 01:12:32,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:32,681 INFO L225 Difference]: With dead ends: 751 [2023-11-29 01:12:32,682 INFO L226 Difference]: Without dead ends: 465 [2023-11-29 01:12:32,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 192 SyntacticMatches, 16 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2236 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=665, Invalid=7707, Unknown=0, NotChecked=0, Total=8372 [2023-11-29 01:12:32,683 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 252 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 3838 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 3888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:32,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 3839 Invalid, 3888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 3838 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2023-11-29 01:12:32,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-11-29 01:12:32,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 346. [2023-11-29 01:12:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 238 states have (on average 1.184873949579832) internal successors, (282), 241 states have internal predecessors, (282), 57 states have call successors, (57), 43 states have call predecessors, (57), 50 states have return successors, (63), 61 states have call predecessors, (63), 55 states have call successors, (63) [2023-11-29 01:12:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 402 transitions. [2023-11-29 01:12:32,778 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 402 transitions. Word has length 235 [2023-11-29 01:12:32,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:32,778 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 402 transitions. [2023-11-29 01:12:32,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 29 states have (on average 4.827586206896552) internal successors, (140), 33 states have internal predecessors, (140), 17 states have call successors, (39), 8 states have call predecessors, (39), 11 states have return successors, (36), 15 states have call predecessors, (36), 15 states have call successors, (36) [2023-11-29 01:12:32,779 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 402 transitions. [2023-11-29 01:12:32,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 01:12:32,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:32,781 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:32,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 01:12:32,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:12:32,982 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:12:32,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:32,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2143943243, now seen corresponding path program 1 times [2023-11-29 01:12:32,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:32,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022698262] [2023-11-29 01:12:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:32,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:33,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:33,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252203652] [2023-11-29 01:12:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:33,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:33,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:33,046 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:33,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:12:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:33,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 3090 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 01:12:33,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:34,050 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 27 treesize of output 1 [2023-11-29 01:12:34,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:12:34,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:12:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 182 proven. 5 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-29 01:12:34,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:35,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:35,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022698262] [2023-11-29 01:12:35,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:35,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252203652] [2023-11-29 01:12:35,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252203652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:35,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:35,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-29 01:12:35,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436687991] [2023-11-29 01:12:35,191 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:35,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:12:35,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:12:35,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:12:35,192 INFO L87 Difference]: Start difference. First operand 346 states and 402 transitions. Second operand has 19 states, 15 states have (on average 7.2) internal successors, (108), 17 states have internal predecessors, (108), 7 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-29 01:12:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:12:39,403 INFO L93 Difference]: Finished difference Result 650 states and 759 transitions. [2023-11-29 01:12:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 01:12:39,404 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 7.2) internal successors, (108), 17 states have internal predecessors, (108), 7 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 235 [2023-11-29 01:12:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:12:39,405 INFO L225 Difference]: With dead ends: 650 [2023-11-29 01:12:39,406 INFO L226 Difference]: Without dead ends: 352 [2023-11-29 01:12:39,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=157, Invalid=1175, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 01:12:39,407 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 26 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:12:39,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2299 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 01:12:39,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-29 01:12:39,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 346. [2023-11-29 01:12:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 238 states have (on average 1.180672268907563) internal successors, (281), 241 states have internal predecessors, (281), 57 states have call successors, (57), 43 states have call predecessors, (57), 50 states have return successors, (63), 61 states have call predecessors, (63), 55 states have call successors, (63) [2023-11-29 01:12:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 401 transitions. [2023-11-29 01:12:39,486 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 401 transitions. Word has length 235 [2023-11-29 01:12:39,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:12:39,486 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 401 transitions. [2023-11-29 01:12:39,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 7.2) internal successors, (108), 17 states have internal predecessors, (108), 7 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-11-29 01:12:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 401 transitions. [2023-11-29 01:12:39,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 01:12:39,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:12:39,488 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:39,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 01:12:39,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:12:39,689 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:12:39,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:39,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1985627295, now seen corresponding path program 2 times [2023-11-29 01:12:39,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:39,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561146139] [2023-11-29 01:12:39,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:39,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:39,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:12:39,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271424152] [2023-11-29 01:12:39,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:12:39,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:39,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:39,749 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:39,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 01:12:40,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:12:40,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:12:40,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 3092 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-29 01:12:40,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:40,775 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 27 treesize of output 1 [2023-11-29 01:12:40,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:12:40,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:12:42,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 01:12:42,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-29 01:12:42,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-11-29 01:12:44,418 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 37 treesize of output 29 [2023-11-29 01:12:44,420 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 29 treesize of output 21 [2023-11-29 01:12:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 235 proven. 26 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 01:12:44,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:12:45,510 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 37 treesize of output 29 [2023-11-29 01:12:45,514 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 29 treesize of output 21 [2023-11-29 01:12:45,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:45,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561146139] [2023-11-29 01:12:45,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:12:45,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271424152] [2023-11-29 01:12:45,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271424152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:45,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:45,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2023-11-29 01:12:45,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118672855] [2023-11-29 01:12:45,807 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:12:45,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 01:12:45,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 01:12:45,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1413, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:12:45,809 INFO L87 Difference]: Start difference. First operand 346 states and 401 transitions. Second operand has 35 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 31 states have internal predecessors, (142), 16 states have call successors, (39), 7 states have call predecessors, (39), 12 states have return successors, (37), 14 states have call predecessors, (37), 16 states have call successors, (37) [2023-11-29 01:13:11,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:13:11,568 INFO L93 Difference]: Finished difference Result 726 states and 881 transitions. [2023-11-29 01:13:11,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-29 01:13:11,569 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 31 states have internal predecessors, (142), 16 states have call successors, (39), 7 states have call predecessors, (39), 12 states have return successors, (37), 14 states have call predecessors, (37), 16 states have call successors, (37) Word has length 236 [2023-11-29 01:13:11,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:13:11,572 INFO L225 Difference]: With dead ends: 726 [2023-11-29 01:13:11,572 INFO L226 Difference]: Without dead ends: 512 [2023-11-29 01:13:11,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 235 SyntacticMatches, 15 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2893 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=876, Invalid=9836, Unknown=0, NotChecked=0, Total=10712 [2023-11-29 01:13:11,574 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 317 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 6228 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 6364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 6228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:13:11,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1445 Invalid, 6364 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [136 Valid, 6228 Invalid, 0 Unknown, 0 Unchecked, 19.0s Time] [2023-11-29 01:13:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-29 01:13:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 411. [2023-11-29 01:13:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 290 states have (on average 1.1724137931034482) internal successors, (340), 292 states have internal predecessors, (340), 63 states have call successors, (63), 51 states have call predecessors, (63), 57 states have return successors, (71), 67 states have call predecessors, (71), 61 states have call successors, (71) [2023-11-29 01:13:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 474 transitions. [2023-11-29 01:13:11,724 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 474 transitions. Word has length 236 [2023-11-29 01:13:11,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:13:11,724 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 474 transitions. [2023-11-29 01:13:11,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 31 states have internal predecessors, (142), 16 states have call successors, (39), 7 states have call predecessors, (39), 12 states have return successors, (37), 14 states have call predecessors, (37), 16 states have call successors, (37) [2023-11-29 01:13:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 474 transitions. [2023-11-29 01:13:11,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 01:13:11,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:13:11,725 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:13:11,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 01:13:11,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:13:11,926 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:13:11,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:13:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1443814663, now seen corresponding path program 2 times [2023-11-29 01:13:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:13:11,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742840234] [2023-11-29 01:13:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:13:11,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:13:11,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:13:11,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534151040] [2023-11-29 01:13:11,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:13:11,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:13:11,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:13:11,991 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:13:11,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 01:13:13,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:13:13,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:13:13,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 3107 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-29 01:13:13,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:13:13,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2023-11-29 01:13:13,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 40 [2023-11-29 01:13:13,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2023-11-29 01:13:13,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 37 [2023-11-29 01:13:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 129 proven. 11 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-29 01:13:15,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:13:15,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:13:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742840234] [2023-11-29 01:13:15,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:13:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534151040] [2023-11-29 01:13:15,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534151040] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:13:15,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:13:15,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2023-11-29 01:13:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147497555] [2023-11-29 01:13:15,760 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:13:15,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 01:13:15,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:13:15,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 01:13:15,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1078, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:13:15,761 INFO L87 Difference]: Start difference. First operand 411 states and 474 transitions. Second operand has 30 states, 23 states have (on average 4.521739130434782) internal successors, (104), 28 states have internal predecessors, (104), 12 states have call successors, (33), 5 states have call predecessors, (33), 9 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) [2023-11-29 01:13:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:13:21,669 INFO L93 Difference]: Finished difference Result 414 states and 476 transitions. [2023-11-29 01:13:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 01:13:21,670 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 23 states have (on average 4.521739130434782) internal successors, (104), 28 states have internal predecessors, (104), 12 states have call successors, (33), 5 states have call predecessors, (33), 9 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) Word has length 238 [2023-11-29 01:13:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:13:21,672 INFO L225 Difference]: With dead ends: 414 [2023-11-29 01:13:21,672 INFO L226 Difference]: Without dead ends: 351 [2023-11-29 01:13:21,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=320, Invalid=3462, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 01:13:21,673 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 107 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:13:21,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2868 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 01:13:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-29 01:13:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350. [2023-11-29 01:13:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 243 states have (on average 1.168724279835391) internal successors, (284), 245 states have internal predecessors, (284), 57 states have call successors, (57), 45 states have call predecessors, (57), 49 states have return successors, (63), 59 states have call predecessors, (63), 56 states have call successors, (63) [2023-11-29 01:13:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 404 transitions. [2023-11-29 01:13:21,769 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 404 transitions. Word has length 238 [2023-11-29 01:13:21,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:13:21,769 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 404 transitions. [2023-11-29 01:13:21,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 23 states have (on average 4.521739130434782) internal successors, (104), 28 states have internal predecessors, (104), 12 states have call successors, (33), 5 states have call predecessors, (33), 9 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) [2023-11-29 01:13:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 404 transitions. [2023-11-29 01:13:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 01:13:21,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:13:21,771 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:13:21,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 01:13:21,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:13:21,972 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:13:21,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:13:21,972 INFO L85 PathProgramCache]: Analyzing trace with hash 778278015, now seen corresponding path program 3 times [2023-11-29 01:13:21,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:13:21,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307513573] [2023-11-29 01:13:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:13:21,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:13:22,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:13:22,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113181895] [2023-11-29 01:13:22,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:13:22,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:13:22,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:13:22,044 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:13:22,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d3239b6-9b9f-421a-9f4c-3b38d2903483/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 01:13:23,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:13:23,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:13:23,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 125 conjunts are in the unsatisfiable core [2023-11-29 01:13:23,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:13:23,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-29 01:13:23,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-29 01:13:24,654 INFO L349 Elim1Store]: treesize reduction 135, result has 21.1 percent of original size [2023-11-29 01:13:24,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 101 [2023-11-29 01:13:24,740 INFO L349 Elim1Store]: treesize reduction 135, result has 21.1 percent of original size [2023-11-29 01:13:24,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 102 treesize of output 93 [2023-11-29 01:13:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2023-11-29 01:13:36,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:13:38,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:13:38,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307513573] [2023-11-29 01:13:38,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:13:38,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113181895] [2023-11-29 01:13:38,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113181895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:13:38,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:13:38,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2023-11-29 01:13:38,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967181233] [2023-11-29 01:13:38,145 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:13:38,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 01:13:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:13:38,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 01:13:38,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 01:13:38,148 INFO L87 Difference]: Start difference. First operand 350 states and 404 transitions. Second operand has 39 states, 30 states have (on average 3.5) internal successors, (105), 31 states have internal predecessors, (105), 12 states have call successors, (33), 5 states have call predecessors, (33), 10 states have return successors, (31), 12 states have call predecessors, (31), 11 states have call successors, (31) [2023-11-29 01:13:44,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:13:48,445 WARN L539 Checker$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 01:13:58,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:02,335 WARN L539 Checker$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 01:14:07,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:11,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:15,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:19,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:14:23,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:14:27,961 WARN L539 Checker$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 01:14:31,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:36,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:40,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:44,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:48,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:53,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:14:57,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:01,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:05,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:18,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:22,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:27,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:31,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:35,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:39,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:43,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:48,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:52,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:15:56,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:16:00,445 WARN L539 Checker$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 01:16:04,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:16:08,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:16:12,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:16:16,823 WARN L539 Checker$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 01:16:20,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:16:24,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:16:31,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:16:37,786 WARN L539 Checker$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 01:16:42,487 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]