./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 5b917a1c951859368fb2463a158063964361d86aeab261c924186dc34055576d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:18:48,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:18:48,443 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:18:48,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:18:48,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:18:48,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:18:48,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:18:48,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:18:48,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:18:48,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:18:48,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:18:48,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:18:48,487 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:18:48,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:18:48,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:18:48,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:18:48,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:18:48,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:18:48,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:18:48,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:18:48,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:18:48,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:18:48,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:18:48,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:18:48,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:18:48,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:48,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:18:48,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:18:48,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:18:48,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:18:48,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:18:48,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:18:48,501 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:18:48,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:18:48,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:18:48,503 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:18:48,503 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_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b917a1c951859368fb2463a158063964361d86aeab261c924186dc34055576d [2023-11-06 22:18:48,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:18:48,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:18:48,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:18:48,812 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:18:48,813 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:18:48,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i [2023-11-06 22:18:51,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:52,448 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:52,449 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i [2023-11-06 22:18:52,491 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/data/4a8029764/c407abd6cd894134b6c85cbb01592d4b/FLAG7496e37cc [2023-11-06 22:18:52,516 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/data/4a8029764/c407abd6cd894134b6c85cbb01592d4b [2023-11-06 22:18:52,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:52,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:52,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:52,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:52,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:52,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:52" (1/1) ... [2023-11-06 22:18:52,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212e3532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:52, skipping insertion in model container [2023-11-06 22:18:52,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:52" (1/1) ... [2023-11-06 22:18:52,733 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:53,075 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_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2023-11-06 22:18:53,083 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_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2023-11-06 22:18:54,049 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,050 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,051 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,052 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,053 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,076 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,077 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,079 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,079 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,096 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,097 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,098 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,098 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,621 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:18:54,623 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:18:54,624 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:18:54,625 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:18:54,627 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:18:54,628 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:18:54,628 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:18:54,629 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:18:54,630 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:18:54,631 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:18:54,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:54,865 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:54,881 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_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4494,4507] [2023-11-06 22:18:54,881 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_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness.i[4554,4567] [2023-11-06 22:18:54,928 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,929 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,929 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,930 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,931 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,942 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,942 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,944 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,944 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,945 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,946 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,947 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,947 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-06 22:18:54,988 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-06 22:18:54,989 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-06 22:18:54,990 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-06 22:18:54,991 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-06 22:18:54,992 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-06 22:18:54,993 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-06 22:18:54,994 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-06 22:18:54,994 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-06 22:18:54,995 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-06 22:18:54,995 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-06 22:18:55,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:55,295 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,295 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,296 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,296 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,296 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,296 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,296 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,296 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,297 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,297 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,297 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,297 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,297 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,298 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,298 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,298 WARN L672 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:18:55,306 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:55,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55 WrapperNode [2023-11-06 22:18:55,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:55,308 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:55,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:55,308 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:55,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,442 INFO L138 Inliner]: procedures = 678, calls = 1036, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 91 [2023-11-06 22:18:55,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:55,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:55,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:55,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:55,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:55,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:55,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:55,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:55,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (1/1) ... [2023-11-06 22:18:55,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:55,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:55,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:55,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2023-11-06 22:18:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2023-11-06 22:18:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:18:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:18:55,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:18:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-06 22:18:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-06 22:18:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-06 22:18:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-06 22:18:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:18:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2023-11-06 22:18:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2023-11-06 22:18:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:18:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:18:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:18:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:18:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:18:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:18:55,889 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:55,891 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:56,133 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:56,140 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:56,140 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:18:56,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:56 BoogieIcfgContainer [2023-11-06 22:18:56,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:56,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:18:56,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:18:56,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:18:56,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:18:52" (1/3) ... [2023-11-06 22:18:56,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554dd1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:56, skipping insertion in model container [2023-11-06 22:18:56,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:55" (2/3) ... [2023-11-06 22:18:56,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554dd1fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:56, skipping insertion in model container [2023-11-06 22:18:56,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:56" (3/3) ... [2023-11-06 22:18:56,163 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_init_harness.i [2023-11-06 22:18:56,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:18:56,184 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:18:56,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:18:56,248 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=LoopsAndPotentialCycles, 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;@20723843, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:18:56,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:18:56,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 44 states have internal predecessors, (58), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-06 22:18:56,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 22:18:56,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:56,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:56,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:56,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:56,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1017333715, now seen corresponding path program 1 times [2023-11-06 22:18:56,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:56,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074222622] [2023-11-06 22:18:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:56,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:56,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:18:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:56,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:18:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:56,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:56,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074222622] [2023-11-06 22:18:56,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074222622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:56,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:56,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:56,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743748513] [2023-11-06 22:18:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:56,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:18:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:56,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:18:56,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:18:56,794 INFO L87 Difference]: Start difference. First operand has 61 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 44 states have internal predecessors, (58), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:18:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:56,822 INFO L93 Difference]: Finished difference Result 117 states and 158 transitions. [2023-11-06 22:18:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:18:56,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-11-06 22:18:56,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:56,834 INFO L225 Difference]: With dead ends: 117 [2023-11-06 22:18:56,834 INFO L226 Difference]: Without dead ends: 56 [2023-11-06 22:18:56,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:18:56,841 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:56,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:18:56,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-06 22:18:56,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-06 22:18:56,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-06 22:18:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2023-11-06 22:18:56,899 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 26 [2023-11-06 22:18:56,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:56,899 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2023-11-06 22:18:56,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:18:56,900 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2023-11-06 22:18:56,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 22:18:56,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:56,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:56,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:18:56,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:56,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1834982165, now seen corresponding path program 1 times [2023-11-06 22:18:56,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:56,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724845823] [2023-11-06 22:18:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:56,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:57,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:18:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:57,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:18:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:58,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:58,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724845823] [2023-11-06 22:18:58,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724845823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:58,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:58,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:18:58,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276108642] [2023-11-06 22:18:58,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:58,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:18:58,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:58,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:18:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:18:58,222 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:18:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:58,479 INFO L93 Difference]: Finished difference Result 108 states and 136 transitions. [2023-11-06 22:18:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:18:58,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-11-06 22:18:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:58,483 INFO L225 Difference]: With dead ends: 108 [2023-11-06 22:18:58,483 INFO L226 Difference]: Without dead ends: 59 [2023-11-06 22:18:58,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:18:58,486 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 29 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:58,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 342 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:18:58,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-06 22:18:58,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-06 22:18:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 43 states have internal predecessors, (54), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-06 22:18:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2023-11-06 22:18:58,502 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 26 [2023-11-06 22:18:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:58,502 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2023-11-06 22:18:58,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:18:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2023-11-06 22:18:58,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 22:18:58,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:58,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:58,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:18:58,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:58,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1650638505, now seen corresponding path program 1 times [2023-11-06 22:18:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:58,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156044576] [2023-11-06 22:18:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:58,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:18:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:18:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:59,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:59,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156044576] [2023-11-06 22:18:59,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156044576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:59,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:59,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:18:59,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117852943] [2023-11-06 22:18:59,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:59,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:18:59,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:59,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:18:59,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:18:59,164 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:18:59,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:59,477 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2023-11-06 22:18:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:18:59,480 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-11-06 22:18:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:18:59,482 INFO L225 Difference]: With dead ends: 124 [2023-11-06 22:18:59,482 INFO L226 Difference]: Without dead ends: 72 [2023-11-06 22:18:59,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:18:59,485 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 74 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:18:59,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 428 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:18:59,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-06 22:18:59,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2023-11-06 22:18:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.38) internal successors, (69), 52 states have internal predecessors, (69), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-11-06 22:18:59,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2023-11-06 22:18:59,498 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 26 [2023-11-06 22:18:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:18:59,498 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2023-11-06 22:18:59,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:18:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2023-11-06 22:18:59,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 22:18:59,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:18:59,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:18:59,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:18:59,500 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:18:59,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:59,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1257611495, now seen corresponding path program 1 times [2023-11-06 22:18:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:59,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109070482] [2023-11-06 22:18:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:59,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:59,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:18:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:00,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:00,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109070482] [2023-11-06 22:19:00,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109070482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:00,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:00,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:19:00,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344000740] [2023-11-06 22:19:00,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:00,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:19:00,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:00,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:19:00,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:19:00,219 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:19:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:00,549 INFO L93 Difference]: Finished difference Result 152 states and 207 transitions. [2023-11-06 22:19:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:19:00,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-11-06 22:19:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:00,559 INFO L225 Difference]: With dead ends: 152 [2023-11-06 22:19:00,560 INFO L226 Difference]: Without dead ends: 90 [2023-11-06 22:19:00,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:19:00,564 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 81 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:00,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 396 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:19:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-06 22:19:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 73. [2023-11-06 22:19:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 56 states have internal predecessors, (75), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-11-06 22:19:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2023-11-06 22:19:00,600 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 26 [2023-11-06 22:19:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:00,601 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2023-11-06 22:19:00,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:19:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2023-11-06 22:19:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 22:19:00,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:00,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:00,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:19:00,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:00,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:00,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1515776933, now seen corresponding path program 1 times [2023-11-06 22:19:00,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:00,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412637783] [2023-11-06 22:19:00,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:00,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:00,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:00,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412637783] [2023-11-06 22:19:00,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412637783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:00,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:00,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:19:00,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146788972] [2023-11-06 22:19:00,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:00,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:19:00,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:00,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:19:00,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:19:00,978 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:19:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:01,263 INFO L93 Difference]: Finished difference Result 176 states and 245 transitions. [2023-11-06 22:19:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:19:01,264 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-11-06 22:19:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:01,265 INFO L225 Difference]: With dead ends: 176 [2023-11-06 22:19:01,266 INFO L226 Difference]: Without dead ends: 110 [2023-11-06 22:19:01,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:19:01,267 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 68 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:01,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 506 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:19:01,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-06 22:19:01,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 77. [2023-11-06 22:19:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.396551724137931) internal successors, (81), 60 states have internal predecessors, (81), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-11-06 22:19:01,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 103 transitions. [2023-11-06 22:19:01,281 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 103 transitions. Word has length 26 [2023-11-06 22:19:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:01,282 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 103 transitions. [2023-11-06 22:19:01,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:19:01,282 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 103 transitions. [2023-11-06 22:19:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-06 22:19:01,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:01,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:01,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:19:01,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:01,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash 504659683, now seen corresponding path program 1 times [2023-11-06 22:19:01,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:01,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063875033] [2023-11-06 22:19:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:01,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:01,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:01,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:01,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063875033] [2023-11-06 22:19:01,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063875033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:01,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:01,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:19:01,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792260102] [2023-11-06 22:19:01,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:01,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:19:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:19:01,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:01,464 INFO L87 Difference]: Start difference. First operand 77 states and 103 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:19:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:01,564 INFO L93 Difference]: Finished difference Result 173 states and 239 transitions. [2023-11-06 22:19:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:01,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-11-06 22:19:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:01,566 INFO L225 Difference]: With dead ends: 173 [2023-11-06 22:19:01,566 INFO L226 Difference]: Without dead ends: 70 [2023-11-06 22:19:01,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:19:01,569 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 36 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:01,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 397 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-06 22:19:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-06 22:19:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 53 states have internal predecessors, (69), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-11-06 22:19:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 91 transitions. [2023-11-06 22:19:01,585 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 91 transitions. Word has length 26 [2023-11-06 22:19:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:01,586 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 91 transitions. [2023-11-06 22:19:01,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:19:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 91 transitions. [2023-11-06 22:19:01,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:19:01,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:01,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:01,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:19:01,588 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:01,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:01,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1687611897, now seen corresponding path program 1 times [2023-11-06 22:19:01,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:01,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360488103] [2023-11-06 22:19:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:01,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:01,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:01,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360488103] [2023-11-06 22:19:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360488103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:01,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:01,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:19:01,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320102618] [2023-11-06 22:19:01,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:01,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:19:01,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:01,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:19:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:19:01,834 INFO L87 Difference]: Start difference. First operand 70 states and 91 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:19:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:01,977 INFO L93 Difference]: Finished difference Result 139 states and 180 transitions. [2023-11-06 22:19:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:19:01,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-06 22:19:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:01,979 INFO L225 Difference]: With dead ends: 139 [2023-11-06 22:19:01,979 INFO L226 Difference]: Without dead ends: 70 [2023-11-06 22:19:01,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:19:01,981 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 34 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:01,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 342 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-06 22:19:01,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-06 22:19:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 53 states have internal predecessors, (67), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-11-06 22:19:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2023-11-06 22:19:01,993 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 28 [2023-11-06 22:19:01,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:01,993 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2023-11-06 22:19:01,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:19:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2023-11-06 22:19:01,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:19:01,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:01,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:01,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:19:01,996 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:01,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1850407916, now seen corresponding path program 1 times [2023-11-06 22:19:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:01,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971640019] [2023-11-06 22:19:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:01,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:02,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:02,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971640019] [2023-11-06 22:19:02,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971640019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:02,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:02,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:19:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341583428] [2023-11-06 22:19:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:02,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:19:02,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:19:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:19:02,198 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:19:02,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:02,401 INFO L93 Difference]: Finished difference Result 153 states and 198 transitions. [2023-11-06 22:19:02,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:19:02,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-06 22:19:02,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:02,403 INFO L225 Difference]: With dead ends: 153 [2023-11-06 22:19:02,403 INFO L226 Difference]: Without dead ends: 82 [2023-11-06 22:19:02,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:19:02,405 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 56 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:02,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 376 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:02,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-06 22:19:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2023-11-06 22:19:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 55 states have internal predecessors, (69), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-11-06 22:19:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2023-11-06 22:19:02,424 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 30 [2023-11-06 22:19:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:02,425 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2023-11-06 22:19:02,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:19:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2023-11-06 22:19:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:19:02,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:02,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:02,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:19:02,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:02,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:02,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1395309347, now seen corresponding path program 1 times [2023-11-06 22:19:02,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:02,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607183269] [2023-11-06 22:19:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:02,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:02,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:02,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:02,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:02,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607183269] [2023-11-06 22:19:02,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607183269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:02,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:02,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:19:02,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155986576] [2023-11-06 22:19:02,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:02,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:19:02,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:02,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:19:02,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:19:02,642 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:19:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:02,713 INFO L93 Difference]: Finished difference Result 145 states and 190 transitions. [2023-11-06 22:19:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:19:02,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-11-06 22:19:02,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:02,714 INFO L225 Difference]: With dead ends: 145 [2023-11-06 22:19:02,715 INFO L226 Difference]: Without dead ends: 80 [2023-11-06 22:19:02,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:02,717 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 10 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:02,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 286 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:19:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-06 22:19:02,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2023-11-06 22:19:02,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.290909090909091) internal successors, (71), 57 states have internal predecessors, (71), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-11-06 22:19:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2023-11-06 22:19:02,731 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 31 [2023-11-06 22:19:02,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:02,731 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2023-11-06 22:19:02,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:19:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2023-11-06 22:19:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 22:19:02,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:02,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:02,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:19:02,738 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:02,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1854431003, now seen corresponding path program 1 times [2023-11-06 22:19:02,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:02,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985330005] [2023-11-06 22:19:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:03,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:19:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:04,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:04,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985330005] [2023-11-06 22:19:04,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985330005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:04,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:04,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:19:04,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016590531] [2023-11-06 22:19:04,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:04,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:19:04,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:04,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:19:04,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:19:04,475 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:19:05,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:05,082 INFO L93 Difference]: Finished difference Result 158 states and 204 transitions. [2023-11-06 22:19:05,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:19:05,083 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2023-11-06 22:19:05,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:05,084 INFO L225 Difference]: With dead ends: 158 [2023-11-06 22:19:05,084 INFO L226 Difference]: Without dead ends: 91 [2023-11-06 22:19:05,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:19:05,086 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 54 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:05,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 491 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:19:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-06 22:19:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2023-11-06 22:19:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.293103448275862) internal successors, (75), 61 states have internal predecessors, (75), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2023-11-06 22:19:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2023-11-06 22:19:05,102 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 39 [2023-11-06 22:19:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:05,103 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2023-11-06 22:19:05,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:19:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2023-11-06 22:19:05,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 22:19:05,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:05,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:05,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:19:05,105 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:05,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1596265565, now seen corresponding path program 1 times [2023-11-06 22:19:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:05,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059557984] [2023-11-06 22:19:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:05,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:05,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:19:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:05,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:05,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059557984] [2023-11-06 22:19:05,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059557984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:05,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:05,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 22:19:05,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784290043] [2023-11-06 22:19:05,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:05,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:19:05,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:05,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:19:05,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:19:05,783 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:19:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:06,331 INFO L93 Difference]: Finished difference Result 182 states and 249 transitions. [2023-11-06 22:19:06,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:19:06,332 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2023-11-06 22:19:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:06,333 INFO L225 Difference]: With dead ends: 182 [2023-11-06 22:19:06,333 INFO L226 Difference]: Without dead ends: 110 [2023-11-06 22:19:06,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:19:06,335 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 69 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:06,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 600 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:19:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-06 22:19:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 84. [2023-11-06 22:19:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 66 states have internal predecessors, (80), 12 states have call successors, (12), 6 states have call predecessors, (12), 9 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-06 22:19:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2023-11-06 22:19:06,354 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 39 [2023-11-06 22:19:06,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:06,354 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2023-11-06 22:19:06,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:19:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2023-11-06 22:19:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 22:19:06,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:06,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:06,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:19:06,356 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:06,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1687584481, now seen corresponding path program 1 times [2023-11-06 22:19:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751984635] [2023-11-06 22:19:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:06,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:06,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:06,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:19:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:06,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:06,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751984635] [2023-11-06 22:19:06,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751984635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:06,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:06,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:19:06,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427557371] [2023-11-06 22:19:06,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:06,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:19:06,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:06,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:19:06,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:19:06,700 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:19:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:06,968 INFO L93 Difference]: Finished difference Result 191 states and 266 transitions. [2023-11-06 22:19:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:19:06,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-11-06 22:19:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:06,970 INFO L225 Difference]: With dead ends: 191 [2023-11-06 22:19:06,970 INFO L226 Difference]: Without dead ends: 93 [2023-11-06 22:19:06,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:19:06,972 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 52 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:06,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 492 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:19:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-06 22:19:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2023-11-06 22:19:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 67 states have internal predecessors, (80), 13 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (19), 11 states have call predecessors, (19), 12 states have call successors, (19) [2023-11-06 22:19:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 112 transitions. [2023-11-06 22:19:06,990 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 112 transitions. Word has length 39 [2023-11-06 22:19:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:06,990 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 112 transitions. [2023-11-06 22:19:06,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:19:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 112 transitions. [2023-11-06 22:19:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:19:06,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:06,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:06,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:19:06,992 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:06,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1045188466, now seen corresponding path program 1 times [2023-11-06 22:19:06,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:06,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363893652] [2023-11-06 22:19:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:06,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:19:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:07,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:07,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363893652] [2023-11-06 22:19:07,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363893652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:07,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848719477] [2023-11-06 22:19:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:07,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:07,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:07,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:07,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:19:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:07,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-06 22:19:07,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:08,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:08,562 INFO L322 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-06 22:19:08,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2023-11-06 22:19:08,574 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-06 22:19:08,575 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2023-11-06 22:19:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848719477] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:08,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:19:08,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 11] total 24 [2023-11-06 22:19:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070139702] [2023-11-06 22:19:08,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:08,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:19:08,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:08,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:19:08,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:19:08,590 INFO L87 Difference]: Start difference. First operand 85 states and 112 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:19:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:08,854 INFO L93 Difference]: Finished difference Result 176 states and 236 transitions. [2023-11-06 22:19:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:19:08,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2023-11-06 22:19:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:08,856 INFO L225 Difference]: With dead ends: 176 [2023-11-06 22:19:08,856 INFO L226 Difference]: Without dead ends: 98 [2023-11-06 22:19:08,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:19:08,858 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 19 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:08,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 318 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:08,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-06 22:19:08,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2023-11-06 22:19:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 72 states have internal predecessors, (88), 13 states have call successors, (13), 6 states have call predecessors, (13), 10 states have return successors, (21), 13 states have call predecessors, (21), 12 states have call successors, (21) [2023-11-06 22:19:08,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 122 transitions. [2023-11-06 22:19:08,883 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 122 transitions. Word has length 41 [2023-11-06 22:19:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:08,883 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 122 transitions. [2023-11-06 22:19:08,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:19:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 122 transitions. [2023-11-06 22:19:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 22:19:08,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:08,885 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:08,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:09,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:09,092 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:09,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash 964483973, now seen corresponding path program 1 times [2023-11-06 22:19:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:09,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268481447] [2023-11-06 22:19:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:09,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:09,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:19:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:19:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:09,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268481447] [2023-11-06 22:19:09,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268481447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:09,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:09,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:19:09,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46718008] [2023-11-06 22:19:09,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:09,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:19:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:09,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:19:09,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:19:09,366 INFO L87 Difference]: Start difference. First operand 92 states and 122 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:19:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:09,444 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2023-11-06 22:19:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:19:09,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2023-11-06 22:19:09,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:09,445 INFO L225 Difference]: With dead ends: 108 [2023-11-06 22:19:09,446 INFO L226 Difference]: Without dead ends: 106 [2023-11-06 22:19:09,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:19:09,447 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 8 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:09,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 453 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:19:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-06 22:19:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2023-11-06 22:19:09,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 79 states have internal predecessors, (94), 14 states have call successors, (14), 7 states have call predecessors, (14), 12 states have return successors, (24), 14 states have call predecessors, (24), 13 states have call successors, (24) [2023-11-06 22:19:09,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2023-11-06 22:19:09,467 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 42 [2023-11-06 22:19:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:09,468 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2023-11-06 22:19:09,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 22:19:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2023-11-06 22:19:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-06 22:19:09,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:09,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:09,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:19:09,470 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:09,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:09,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1440497479, now seen corresponding path program 1 times [2023-11-06 22:19:09,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:09,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109083939] [2023-11-06 22:19:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:09,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:09,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:10,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:19:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 22:19:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:19:10,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:10,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109083939] [2023-11-06 22:19:10,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109083939] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:10,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131636843] [2023-11-06 22:19:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:10,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:10,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:10,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:10,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:19:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:10,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-06 22:19:10,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:10,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 7 [2023-11-06 22:19:10,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 7 [2023-11-06 22:19:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:24,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:19:24,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131636843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:19:24,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:19:24,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 8] total 29 [2023-11-06 22:19:24,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108872878] [2023-11-06 22:19:24,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:24,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 22:19:24,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:24,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 22:19:24,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=715, Unknown=6, NotChecked=0, Total=812 [2023-11-06 22:19:24,730 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 29 states, 25 states have (on average 3.68) internal successors, (92), 28 states have internal predecessors, (92), 13 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-06 22:19:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:26,453 INFO L93 Difference]: Finished difference Result 248 states and 341 transitions. [2023-11-06 22:19:26,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:19:26,454 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 3.68) internal successors, (92), 28 states have internal predecessors, (92), 13 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) Word has length 50 [2023-11-06 22:19:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:26,455 INFO L225 Difference]: With dead ends: 248 [2023-11-06 22:19:26,455 INFO L226 Difference]: Without dead ends: 154 [2023-11-06 22:19:26,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=301, Invalid=1763, Unknown=6, NotChecked=0, Total=2070 [2023-11-06 22:19:26,458 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 246 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:26,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 800 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:19:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-06 22:19:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 96. [2023-11-06 22:19:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 76 states have internal predecessors, (88), 12 states have call successors, (12), 8 states have call predecessors, (12), 12 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-06 22:19:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 117 transitions. [2023-11-06 22:19:26,487 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 117 transitions. Word has length 50 [2023-11-06 22:19:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:26,488 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 117 transitions. [2023-11-06 22:19:26,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 3.68) internal successors, (92), 28 states have internal predecessors, (92), 13 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-06 22:19:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 117 transitions. [2023-11-06 22:19:26,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:19:26,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:26,489 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:19:26,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:26,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:26,696 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:26,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:26,696 INFO L85 PathProgramCache]: Analyzing trace with hash -41969126, now seen corresponding path program 1 times [2023-11-06 22:19:26,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:26,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398600498] [2023-11-06 22:19:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:26,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:19:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:27,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:19:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:27,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:19:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:19:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:27,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-06 22:19:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:27,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:19:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:19:27,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:27,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398600498] [2023-11-06 22:19:27,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398600498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:27,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:27,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:19:27,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802997604] [2023-11-06 22:19:27,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:27,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:19:27,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:27,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:19:27,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:19:27,457 INFO L87 Difference]: Start difference. First operand 96 states and 117 transitions. Second operand has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:19:27,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:27,681 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2023-11-06 22:19:27,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:19:27,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 58 [2023-11-06 22:19:27,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:27,682 INFO L225 Difference]: With dead ends: 102 [2023-11-06 22:19:27,682 INFO L226 Difference]: Without dead ends: 98 [2023-11-06 22:19:27,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:19:27,683 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 16 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:27,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 521 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-06 22:19:27,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-06 22:19:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 77 states have internal predecessors, (89), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-06 22:19:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2023-11-06 22:19:27,733 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 58 [2023-11-06 22:19:27,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:27,733 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2023-11-06 22:19:27,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:19:27,734 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2023-11-06 22:19:27,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 22:19:27,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:27,735 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:27,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:19:27,736 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:27,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1239716043, now seen corresponding path program 1 times [2023-11-06 22:19:27,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:27,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512129449] [2023-11-06 22:19:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:27,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:19:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:28,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:19:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:28,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:19:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:28,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:19:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:28,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:19:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:19:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:28,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:19:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:28,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:19:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:28,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 22:19:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:19:29,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:29,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512129449] [2023-11-06 22:19:29,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512129449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:29,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:29,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:19:29,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151556204] [2023-11-06 22:19:29,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:29,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:19:29,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:29,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:19:29,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:19:29,073 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand has 11 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-06 22:19:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:29,627 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2023-11-06 22:19:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:19:29,628 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 78 [2023-11-06 22:19:29,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:29,629 INFO L225 Difference]: With dead ends: 106 [2023-11-06 22:19:29,629 INFO L226 Difference]: Without dead ends: 99 [2023-11-06 22:19:29,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:19:29,630 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:29,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 65 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:19:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-06 22:19:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-06 22:19:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 78 states have internal predecessors, (89), 12 states have call successors, (12), 9 states have call predecessors, (12), 12 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-06 22:19:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2023-11-06 22:19:29,652 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 78 [2023-11-06 22:19:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:29,652 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2023-11-06 22:19:29,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-06 22:19:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2023-11-06 22:19:29,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 22:19:29,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:29,654 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:29,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:19:29,654 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:29,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:29,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2049062669, now seen corresponding path program 1 times [2023-11-06 22:19:29,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:29,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766943605] [2023-11-06 22:19:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:29,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:30,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:19:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:30,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:19:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:19:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:31,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 22:19:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:31,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:19:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 22:19:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:19:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:19:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:32,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 22:19:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 22:19:32,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:32,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766943605] [2023-11-06 22:19:32,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766943605] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:32,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461306304] [2023-11-06 22:19:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:32,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:32,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:32,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:32,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d8a22c-13ac-4006-9d56-b1ad95fb97d8/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:19:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:32,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-06 22:19:32,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:32,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:32,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:32,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:19:32,542 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 9 [2023-11-06 22:19:54,975 WARN L861 $PredicateComparison]: unable to prove that (and (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_2| Int) (|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_2| Int)) (= (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_2|) (+ |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_2| 24)) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_2|)) (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_5| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_4| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_5|) (+ |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_4| 24)) 0))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_5| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_4| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_5|) (+ |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_4| 24)) 0))))) is different from true [2023-11-06 22:19:55,963 INFO L322 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size [2023-11-06 22:19:55,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 38 [2023-11-06 22:19:58,049 WARN L861 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_3| Int) (|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_3| Int)) (let ((.cse0 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_3|))) (and (not (= (select .cse0 24) 0)) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_3| (select .cse0 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_3|))))) (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_3| Int) (|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_3| Int)) (and (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_3| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_3|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_3|)) (not (= |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_3| 0))))) is different from true [2023-11-06 22:20:00,291 WARN L861 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_4| Int) (|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_4| Int)) (let ((.cse0 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_4|))) (and (not (= (select .cse0 24) 0)) (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_4| (select .cse0 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_4|))))) (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_4| Int) (|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_4| Int)) (and (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_4| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_4|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_4|)) (not (= |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_4| 0))))) is different from true [2023-11-06 22:20:02,552 WARN L861 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| Int) (|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_5| Int)) (let ((.cse0 (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|))) (and (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| (select .cse0 |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_5|)) (not (= (select .cse0 24) 0))))) (exists ((|v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| Int) (|v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_5| Int)) (and (= |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_init_#in~list.base_BEFORE_CALL_5|) |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_5|)) (not (= |v_aws_linked_list_init_#in~list.offset_BEFORE_CALL_5| 0))))) is different from true [2023-11-06 22:20:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-11-06 22:20:03,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:04,330 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:04,330 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 9 [2023-11-06 22:20:04,581 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:20:04,581 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 44 [2023-11-06 22:20:05,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461306304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:05,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:20:05,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 46 [2023-11-06 22:20:05,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101202228] [2023-11-06 22:20:05,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:05,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-06 22:20:05,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:05,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-06 22:20:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2364, Unknown=13, NotChecked=404, Total=2970 [2023-11-06 22:20:05,704 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand has 46 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 40 states have internal predecessors, (104), 13 states have call successors, (18), 9 states have call predecessors, (18), 12 states have return successors, (17), 10 states have call predecessors, (17), 12 states have call successors, (17) [2023-11-06 22:20:07,988 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] [2023-11-06 22:20:10,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:20:11,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:20:13,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:20:40,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:20:48,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:20:50,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:20:52,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:20:54,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:21:04,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:21:06,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:21:16,799 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]