./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx --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 a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:59:09,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:59:09,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 20:59:09,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:59:09,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:59:09,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:59:09,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:59:09,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:59:09,449 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:59:09,449 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:59:09,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:59:09,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:59:09,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:59:09,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:59:09,453 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:59:09,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:59:09,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 20:59:09,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:59:09,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:59:09,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 20:59:09,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:59:09,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 20:59:09,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:59:09,464 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:59:09,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:59:09,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:59:09,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:59:09,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:59:09,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:09,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:59:09,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:59:09,473 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 20:59:09,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:59:09,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:59:09,475 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:59:09,476 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:59:09,477 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 20:59:09,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:59:09,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:59:09,478 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_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2023-11-21 20:59:09,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:59:09,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:59:09,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:59:09,847 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:59:09,848 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:59:09,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2023-11-21 20:59:13,015 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:59:13,595 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:59:13,595 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2023-11-21 20:59:13,642 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/data/483e0c98a/e6bf359cc4e04fe5935f852b53e37a86/FLAG6639e9a79 [2023-11-21 20:59:13,659 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/data/483e0c98a/e6bf359cc4e04fe5935f852b53e37a86 [2023-11-21 20:59:13,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:59:13,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:59:13,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:13,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:59:13,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:59:13,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:13" (1/1) ... [2023-11-21 20:59:13,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4122a023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:13, skipping insertion in model container [2023-11-21 20:59:13,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:13" (1/1) ... [2023-11-21 20:59:13,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:59:14,191 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_80216821-47a4-4413-82ec-22a1166f4f1c/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2023-11-21 20:59:14,243 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_80216821-47a4-4413-82ec-22a1166f4f1c/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4561,4574] [2023-11-21 20:59:15,424 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,425 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,426 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,429 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,442 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,458 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,459 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,462 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,463 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,465 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,466 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,467 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:15,468 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,084 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 20:59:16,088 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 20:59:16,091 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 20:59:16,093 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 20:59:16,095 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 20:59:16,096 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 20:59:16,098 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 20:59:16,099 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 20:59:16,100 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 20:59:16,101 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 20:59:16,826 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,828 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,865 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,873 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,874 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,897 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,898 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,899 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,900 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,901 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,902 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:16,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:17,015 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:59:17,041 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_80216821-47a4-4413-82ec-22a1166f4f1c/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2023-11-21 20:59:17,042 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_80216821-47a4-4413-82ec-22a1166f4f1c/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4561,4574] [2023-11-21 20:59:17,100 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,100 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,101 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,101 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,102 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,115 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,118 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,119 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,120 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,121 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,125 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,125 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,126 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,163 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 20:59:17,164 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 20:59:17,165 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 20:59:17,166 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 20:59:17,167 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 20:59:17,169 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 20:59:17,169 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 20:59:17,170 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 20:59:17,170 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 20:59:17,171 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 20:59:17,223 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2023-11-21 20:59:17,380 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,381 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,389 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,390 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,395 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,410 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,410 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,411 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,411 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,412 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,412 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 20:59:17,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:17,695 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,695 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,695 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,695 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,695 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,695 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,695 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,696 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,696 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,696 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,696 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,696 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,696 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,696 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,696 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,696 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,696 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,697 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:17,705 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:59:17,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17 WrapperNode [2023-11-21 20:59:17,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:17,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:17,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:59:17,707 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:59:17,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:17,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:17,945 INFO L138 Inliner]: procedures = 772, calls = 2431, calls flagged for inlining = 67, calls inlined = 13, statements flattened = 848 [2023-11-21 20:59:17,946 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:17,947 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:59:17,947 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:59:17,947 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:59:17,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:17,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:17,969 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:18,071 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-21 20:59:18,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:18,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:18,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:18,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:18,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:18,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:18,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:59:18,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:59:18,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:59:18,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:59:18,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (1/1) ... [2023-11-21 20:59:18,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:18,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:18,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:59:18,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:59:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-21 20:59:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 20:59:18,294 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 20:59:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 20:59:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 20:59:18,296 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 20:59:18,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 20:59:18,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 20:59:18,296 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-21 20:59:18,296 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-21 20:59:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 20:59:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:59:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 20:59:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:59:18,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:59:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-21 20:59:18,297 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-21 20:59:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:59:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-21 20:59:18,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-21 20:59:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 20:59:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 20:59:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 20:59:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 20:59:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-21 20:59:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-21 20:59:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-21 20:59:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-21 20:59:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:59:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-21 20:59:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-21 20:59:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-21 20:59:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-21 20:59:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-21 20:59:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-21 20:59:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-21 20:59:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 20:59:18,302 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 20:59:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-21 20:59:18,302 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-21 20:59:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 20:59:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 20:59:18,302 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 20:59:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-21 20:59:18,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-21 20:59:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-21 20:59:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-21 20:59:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-21 20:59:18,304 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-21 20:59:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 20:59:18,690 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:59:18,697 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:59:20,367 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2023-11-21 20:59:20,387 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:59:20,830 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:59:20,831 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 20:59:20,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:20 BoogieIcfgContainer [2023-11-21 20:59:20,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:59:20,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:59:20,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:59:20,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:59:20,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:59:13" (1/3) ... [2023-11-21 20:59:20,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e9e395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:20, skipping insertion in model container [2023-11-21 20:59:20,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:17" (2/3) ... [2023-11-21 20:59:20,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e9e395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:20, skipping insertion in model container [2023-11-21 20:59:20,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:20" (3/3) ... [2023-11-21 20:59:20,843 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2023-11-21 20:59:20,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:59:20,867 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 20:59:20,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:59:20,934 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;@148be501, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:59:20,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 20:59:20,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-21 20:59:20,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-21 20:59:20,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:20,954 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:20,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:20,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1399697526, now seen corresponding path program 1 times [2023-11-21 20:59:20,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:20,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238597666] [2023-11-21 20:59:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:20,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:21,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 20:59:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:21,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 20:59:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 20:59:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 20:59:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:22,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 20:59:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-21 20:59:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 20:59:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 20:59:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-21 20:59:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:22,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 20:59:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-21 20:59:22,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238597666] [2023-11-21 20:59:22,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238597666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:22,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:22,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:22,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74031126] [2023-11-21 20:59:22,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:22,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:22,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:22,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:22,241 INFO L87 Difference]: Start difference. First operand has 137 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-21 20:59:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:23,918 INFO L93 Difference]: Finished difference Result 183 states and 227 transitions. [2023-11-21 20:59:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 20:59:23,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 48 [2023-11-21 20:59:23,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:23,932 INFO L225 Difference]: With dead ends: 183 [2023-11-21 20:59:23,932 INFO L226 Difference]: Without dead ends: 135 [2023-11-21 20:59:23,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:23,940 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 34 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:23,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 363 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-21 20:59:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-21 20:59:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2023-11-21 20:59:24,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 77 states have internal predecessors, (88), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-21 20:59:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2023-11-21 20:59:24,033 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 48 [2023-11-21 20:59:24,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:24,035 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2023-11-21 20:59:24,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-21 20:59:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2023-11-21 20:59:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-21 20:59:24,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:24,040 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:24,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 20:59:24,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:24,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1094767789, now seen corresponding path program 1 times [2023-11-21 20:59:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:24,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489774883] [2023-11-21 20:59:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:24,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 20:59:24,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726235567] [2023-11-21 20:59:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:24,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:24,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:24,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:24,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 20:59:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:24,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 2317 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 20:59:24,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-21 20:59:25,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:25,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489774883] [2023-11-21 20:59:25,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 20:59:25,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726235567] [2023-11-21 20:59:25,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726235567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:25,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:25,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:25,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741312451] [2023-11-21 20:59:25,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:25,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:25,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:25,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:25,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:25,063 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-21 20:59:26,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:27,189 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2023-11-21 20:59:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 20:59:27,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 68 [2023-11-21 20:59:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:27,193 INFO L225 Difference]: With dead ends: 175 [2023-11-21 20:59:27,193 INFO L226 Difference]: Without dead ends: 133 [2023-11-21 20:59:27,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:27,196 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:27,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 558 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-21 20:59:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-21 20:59:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-21 20:59:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.144736842105263) internal successors, (87), 77 states have internal predecessors, (87), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-21 20:59:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 162 transitions. [2023-11-21 20:59:27,217 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 162 transitions. Word has length 68 [2023-11-21 20:59:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:27,218 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 162 transitions. [2023-11-21 20:59:27,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-21 20:59:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 162 transitions. [2023-11-21 20:59:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-21 20:59:27,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:27,221 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-21 20:59:27,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:27,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:27,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:27,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:27,436 INFO L85 PathProgramCache]: Analyzing trace with hash -881173024, now seen corresponding path program 1 times [2023-11-21 20:59:27,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:27,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546302797] [2023-11-21 20:59:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:27,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:27,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 20:59:27,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717831030] [2023-11-21 20:59:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:27,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:27,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:27,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:27,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 20:59:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:28,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:59:28,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-21 20:59:28,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:28,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:28,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546302797] [2023-11-21 20:59:28,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 20:59:28,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717831030] [2023-11-21 20:59:28,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717831030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:28,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:28,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:28,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695988902] [2023-11-21 20:59:28,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:28,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:28,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:28,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:28,446 INFO L87 Difference]: Start difference. First operand 133 states and 162 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-21 20:59:29,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:29,941 INFO L93 Difference]: Finished difference Result 224 states and 267 transitions. [2023-11-21 20:59:29,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:59:29,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 94 [2023-11-21 20:59:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:29,944 INFO L225 Difference]: With dead ends: 224 [2023-11-21 20:59:29,945 INFO L226 Difference]: Without dead ends: 133 [2023-11-21 20:59:29,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:29,947 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:29,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-21 20:59:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-21 20:59:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-21 20:59:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.131578947368421) internal successors, (86), 77 states have internal predecessors, (86), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-21 20:59:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2023-11-21 20:59:29,965 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 94 [2023-11-21 20:59:29,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:29,966 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2023-11-21 20:59:29,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-21 20:59:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2023-11-21 20:59:29,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-21 20:59:29,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:29,969 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-21 20:59:29,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:30,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:30,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:30,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:30,184 INFO L85 PathProgramCache]: Analyzing trace with hash -192235514, now seen corresponding path program 1 times [2023-11-21 20:59:30,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:30,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596241955] [2023-11-21 20:59:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:30,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:30,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 20:59:30,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050151642] [2023-11-21 20:59:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:30,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:30,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:30,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:30,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 20:59:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:31,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-21 20:59:31,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:31,395 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 [2023-11-21 20:59:31,400 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 [2023-11-21 20:59:33,509 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7| Int)) (and (<= 2 |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|) (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1| Int)) (not (= 0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1|)))))) (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7| Int)) (and (exists ((|v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_aws_hash_table_init_~map#1.offset_BEFORE_CALL_1|) 0))) (<= 2 |v_ULTIMATE.start_aws_hash_table_init_~map#1.base_BEFORE_CALL_7|)))) is different from true [2023-11-21 20:59:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-21 20:59:33,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 20:59:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-21 20:59:36,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:36,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596241955] [2023-11-21 20:59:36,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 20:59:36,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050151642] [2023-11-21 20:59:36,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050151642] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 20:59:36,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 20:59:36,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-21 20:59:36,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61064062] [2023-11-21 20:59:36,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:36,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 20:59:36,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:36,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 20:59:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=143, Unknown=2, NotChecked=24, Total=210 [2023-11-21 20:59:36,846 INFO L87 Difference]: Start difference. First operand 133 states and 161 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-21 20:59:40,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:40,343 INFO L93 Difference]: Finished difference Result 172 states and 204 transitions. [2023-11-21 20:59:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:59:40,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 103 [2023-11-21 20:59:40,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:40,346 INFO L225 Difference]: With dead ends: 172 [2023-11-21 20:59:40,346 INFO L226 Difference]: Without dead ends: 135 [2023-11-21 20:59:40,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=69, Invalid=274, Unknown=3, NotChecked=34, Total=380 [2023-11-21 20:59:40,348 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 151 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:40,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 564 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 20:59:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-21 20:59:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-21 20:59:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 77 states have (on average 1.12987012987013) internal successors, (87), 79 states have internal predecessors, (87), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-11-21 20:59:40,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 163 transitions. [2023-11-21 20:59:40,388 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 163 transitions. Word has length 103 [2023-11-21 20:59:40,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:40,390 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 163 transitions. [2023-11-21 20:59:40,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-21 20:59:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 163 transitions. [2023-11-21 20:59:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-21 20:59:40,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:40,403 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-21 20:59:40,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:40,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:40,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:40,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:40,610 INFO L85 PathProgramCache]: Analyzing trace with hash -930315145, now seen corresponding path program 1 times [2023-11-21 20:59:40,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:40,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467527351] [2023-11-21 20:59:40,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:40,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:40,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 20:59:40,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614439856] [2023-11-21 20:59:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:40,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:40,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:40,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:40,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 20:59:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:41,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 20:59:41,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-21 20:59:41,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:41,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:41,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467527351] [2023-11-21 20:59:41,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 20:59:41,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614439856] [2023-11-21 20:59:41,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614439856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:41,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:41,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:59:41,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543097823] [2023-11-21 20:59:41,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:41,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:41,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:41,706 INFO L87 Difference]: Start difference. First operand 135 states and 163 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-21 20:59:43,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:43,048 INFO L93 Difference]: Finished difference Result 180 states and 212 transitions. [2023-11-21 20:59:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:43,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 109 [2023-11-21 20:59:43,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:43,051 INFO L225 Difference]: With dead ends: 180 [2023-11-21 20:59:43,051 INFO L226 Difference]: Without dead ends: 135 [2023-11-21 20:59:43,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:43,053 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:43,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 687 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 20:59:43,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-21 20:59:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2023-11-21 20:59:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 79 states have internal predecessors, (86), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-11-21 20:59:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 162 transitions. [2023-11-21 20:59:43,071 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 162 transitions. Word has length 109 [2023-11-21 20:59:43,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:43,072 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 162 transitions. [2023-11-21 20:59:43,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-21 20:59:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 162 transitions. [2023-11-21 20:59:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-21 20:59:43,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:43,074 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-21 20:59:43,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-21 20:59:43,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:43,291 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:43,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:43,292 INFO L85 PathProgramCache]: Analyzing trace with hash 642405513, now seen corresponding path program 1 times [2023-11-21 20:59:43,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:43,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098507997] [2023-11-21 20:59:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:43,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:43,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 20:59:43,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503625260] [2023-11-21 20:59:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:43,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:43,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:43,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 20:59:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:44,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-21 20:59:44,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-21 20:59:44,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:44,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:44,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098507997] [2023-11-21 20:59:44,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 20:59:44,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503625260] [2023-11-21 20:59:44,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503625260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:44,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:44,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 20:59:44,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281365069] [2023-11-21 20:59:44,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:44,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 20:59:44,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:44,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 20:59:44,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-21 20:59:44,524 INFO L87 Difference]: Start difference. First operand 135 states and 162 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-21 20:59:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:46,308 INFO L93 Difference]: Finished difference Result 191 states and 223 transitions. [2023-11-21 20:59:46,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 20:59:46,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 120 [2023-11-21 20:59:46,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:46,311 INFO L225 Difference]: With dead ends: 191 [2023-11-21 20:59:46,311 INFO L226 Difference]: Without dead ends: 133 [2023-11-21 20:59:46,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-21 20:59:46,313 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 5 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:46,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1203 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-21 20:59:46,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-21 20:59:46,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-11-21 20:59:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 78 states have internal predecessors, (83), 37 states have call successors, (37), 18 states have call predecessors, (37), 19 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) [2023-11-21 20:59:46,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2023-11-21 20:59:46,330 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 120 [2023-11-21 20:59:46,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:46,330 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2023-11-21 20:59:46,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-21 20:59:46,331 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2023-11-21 20:59:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-21 20:59:46,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:46,333 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:46,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:46,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:46,559 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:46,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1294348574, now seen corresponding path program 1 times [2023-11-21 20:59:46,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:46,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333510322] [2023-11-21 20:59:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:46,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:46,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 20:59:46,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998515643] [2023-11-21 20:59:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:46,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 20:59:46,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:46,724 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 20:59:46,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80216821-47a4-4413-82ec-22a1166f4f1c/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 20:59:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:47,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-21 20:59:47,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:47,957 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 [2023-11-21 20:59:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-21 20:59:48,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:48,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333510322] [2023-11-21 20:59:48,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 20:59:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998515643] [2023-11-21 20:59:48,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998515643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:48,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:48,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-21 20:59:48,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457503304] [2023-11-21 20:59:48,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:48,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-21 20:59:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-21 20:59:48,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-21 20:59:48,281 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand has 17 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-21 20:59:51,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 20:59:53,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 20:59:55,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 20:59:57,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 20:59:58,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:00:00,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 21:00:02,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 21:00:04,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-21 21:00:07,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]