./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3e33855732bf911c074b61758d4fc045b7b7b7affa817be687a2ca93efbf3565 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:18:45,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:18:45,928 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 01:18:45,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:18:45,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:18:45,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:18:45,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:18:45,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:18:45,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:18:45,962 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:18:45,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:18:45,963 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:18:45,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:18:45,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:18:45,965 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:18:45,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:18:45,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:18:45,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:18:45,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:18:45,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:18:45,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:18:45,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:18:45,972 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:18:45,973 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:18:45,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:18:45,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:18:45,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:18:45,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:18:45,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:18:45,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:18:45,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:18:45,976 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:18:45,976 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:18:45,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:18:45,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:18:45,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:18:45,977 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:18:45,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:18:45,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:18:45,978 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_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e33855732bf911c074b61758d4fc045b7b7b7affa817be687a2ca93efbf3565 [2023-11-29 01:18:46,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:18:46,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:18:46,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:18:46,236 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:18:46,237 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:18:46,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness_negated.i [2023-11-29 01:18:48,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:18:49,345 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:18:49,346 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness_negated.i [2023-11-29 01:18:49,374 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/data/c8130307d/3f70998864aa49eb84afcb56c2588c54/FLAG2ba00e6eb [2023-11-29 01:18:49,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/data/c8130307d/3f70998864aa49eb84afcb56c2588c54 [2023-11-29 01:18:49,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:18:49,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:18:49,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:18:49,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:18:49,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:18:49,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e6fe58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49, skipping insertion in model container [2023-11-29 01:18:49,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,527 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:18:49,760 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_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness_negated.i[4494,4507] [2023-11-29 01:18:49,767 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_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness_negated.i[4554,4567] [2023-11-29 01:18:50,433 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,434 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,435 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,436 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,437 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,455 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,457 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,458 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,460 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,462 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,463 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,463 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,768 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 01:18:50,768 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 01:18:50,770 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 01:18:50,771 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 01:18:50,772 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 01:18:50,772 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 01:18:50,773 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 01:18:50,773 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 01:18:50,774 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 01:18:50,774 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 01:18:50,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:18:50,923 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:18:50,938 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_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness_negated.i[4494,4507] [2023-11-29 01:18:50,938 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_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/sv-benchmarks/c/aws-c-common/aws_linked_list_init_harness_negated.i[4554,4567] [2023-11-29 01:18:50,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,986 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,987 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,987 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:50,989 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:51,001 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:51,002 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:51,003 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:51,004 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:51,005 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:51,006 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:51,007 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:51,007 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:18:51,049 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 01:18:51,050 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 01:18:51,052 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 01:18:51,053 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 01:18:51,054 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 01:18:51,054 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 01:18:51,055 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 01:18:51,056 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 01:18:51,056 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 01:18:51,057 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 01:18:51,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:18:51,308 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,309 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,309 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,309 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,309 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,309 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,309 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,309 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,310 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,310 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,310 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,310 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,310 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,310 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,310 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,311 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:51,317 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:18:51,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51 WrapperNode [2023-11-29 01:18:51,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:18:51,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:18:51,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:18:51,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:18:51,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,418 INFO L138 Inliner]: procedures = 678, calls = 1036, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 91 [2023-11-29 01:18:51,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:18:51,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:18:51,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:18:51,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:18:51,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,477 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 5, 13]. 65 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 4 writes are split as follows [0, 0, 4]. [2023-11-29 01:18:51,478 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,496 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,501 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,511 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:18:51,512 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:18:51,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:18:51,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:18:51,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (1/1) ... [2023-11-29 01:18:51,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:18:51,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:18:51,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:18:51,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:18:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2023-11-29 01:18:51,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2023-11-29 01:18:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:18:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:18:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:18:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-29 01:18:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-29 01:18:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-29 01:18:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-29 01:18:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:18:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:18:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:18:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:18:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:18:51,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:18:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2023-11-29 01:18:51,578 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2023-11-29 01:18:51,578 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:18:51,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:18:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:18:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:18:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:18:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:18:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 01:18:51,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 01:18:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 01:18:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:18:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:18:51,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:18:51,790 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:18:51,792 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:18:51,974 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:18:52,001 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:18:52,001 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:18:52,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:18:52 BoogieIcfgContainer [2023-11-29 01:18:52,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:18:52,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:18:52,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:18:52,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:18:52,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:18:49" (1/3) ... [2023-11-29 01:18:52,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3403f733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:18:52, skipping insertion in model container [2023-11-29 01:18:52,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:51" (2/3) ... [2023-11-29 01:18:52,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3403f733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:18:52, skipping insertion in model container [2023-11-29 01:18:52,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:18:52" (3/3) ... [2023-11-29 01:18:52,010 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_init_harness_negated.i [2023-11-29 01:18:52,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:18:52,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:18:52,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:18:52,076 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@738732c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:18:52,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:18:52,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 37 states have internal predecessors, (51), 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) [2023-11-29 01:18:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:18:52,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:52,088 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] [2023-11-29 01:18:52,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:52,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:52,093 INFO L85 PathProgramCache]: Analyzing trace with hash 432604891, now seen corresponding path program 1 times [2023-11-29 01:18:52,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:52,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615612060] [2023-11-29 01:18:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:52,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:52,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:52,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615612060] [2023-11-29 01:18:52,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615612060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:52,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:52,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:18:52,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750137382] [2023-11-29 01:18:52,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:52,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:18:52,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:52,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:18:52,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:18:52,453 INFO L87 Difference]: Start difference. First operand has 54 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 37 states have internal predecessors, (51), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2023-11-29 01:18:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:52,487 INFO L93 Difference]: Finished difference Result 104 states and 145 transitions. [2023-11-29 01:18:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:18:52,490 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 25 [2023-11-29 01:18:52,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:52,499 INFO L225 Difference]: With dead ends: 104 [2023-11-29 01:18:52,499 INFO L226 Difference]: Without dead ends: 52 [2023-11-29 01:18:52,503 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 [2023-11-29 01:18:52,506 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:52,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:18:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-29 01:18:52,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-29 01:18:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 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) [2023-11-29 01:18:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2023-11-29 01:18:52,546 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 25 [2023-11-29 01:18:52,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:52,547 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2023-11-29 01:18:52,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2023-11-29 01:18:52,547 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2023-11-29 01:18:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:18:52,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:52,549 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] [2023-11-29 01:18:52,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:18:52,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:52,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:52,550 INFO L85 PathProgramCache]: Analyzing trace with hash -385043559, now seen corresponding path program 1 times [2023-11-29 01:18:52,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:52,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295654566] [2023-11-29 01:18:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:52,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:52,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:52,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:52,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:52,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295654566] [2023-11-29 01:18:52,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295654566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:52,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:52,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:18:52,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204268073] [2023-11-29 01:18:52,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:52,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:18:52,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:18:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:18:52,966 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:18:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:53,030 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2023-11-29 01:18:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:18:53,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 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 25 [2023-11-29 01:18:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:53,034 INFO L225 Difference]: With dead ends: 62 [2023-11-29 01:18:53,034 INFO L226 Difference]: Without dead ends: 60 [2023-11-29 01:18:53,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:18:53,036 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 5 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:53,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 290 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:18:53,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-29 01:18:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2023-11-29 01:18:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 41 states have internal predecessors, (51), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-29 01:18:53,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2023-11-29 01:18:53,049 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 25 [2023-11-29 01:18:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:53,049 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2023-11-29 01:18:53,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:18:53,050 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2023-11-29 01:18:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:18:53,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:53,051 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] [2023-11-29 01:18:53,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:18:53,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:53,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:53,052 INFO L85 PathProgramCache]: Analyzing trace with hash 133984565, now seen corresponding path program 1 times [2023-11-29 01:18:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:53,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946017539] [2023-11-29 01:18:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:53,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946017539] [2023-11-29 01:18:53,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946017539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:53,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:53,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:18:53,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250895449] [2023-11-29 01:18:53,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:18:53,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:18:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:18:53,304 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2023-11-29 01:18:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:53,475 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2023-11-29 01:18:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:18:53,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 27 [2023-11-29 01:18:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:53,478 INFO L225 Difference]: With dead ends: 110 [2023-11-29 01:18:53,478 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 01:18:53,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:18:53,480 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 33 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:53,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 297 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:18:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 01:18:53,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-29 01:18:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 41 states have internal predecessors, (50), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-29 01:18:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2023-11-29 01:18:53,492 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 27 [2023-11-29 01:18:53,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:53,492 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2023-11-29 01:18:53,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2023-11-29 01:18:53,493 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2023-11-29 01:18:53,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 01:18:53,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:53,494 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] [2023-11-29 01:18:53,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:18:53,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:53,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:53,495 INFO L85 PathProgramCache]: Analyzing trace with hash 652102594, now seen corresponding path program 1 times [2023-11-29 01:18:53,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:53,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142128601] [2023-11-29 01:18:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:53,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:53,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:53,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:53,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142128601] [2023-11-29 01:18:53,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142128601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:53,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:53,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:18:53,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573754616] [2023-11-29 01:18:53,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:53,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:18:53,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:53,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:18:53,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:18:53,754 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2023-11-29 01:18:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:53,834 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2023-11-29 01:18:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:18:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 29 [2023-11-29 01:18:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:53,836 INFO L225 Difference]: With dead ends: 110 [2023-11-29 01:18:53,837 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 01:18:53,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:18:53,838 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 11 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:53,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 250 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:18:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 01:18:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2023-11-29 01:18:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.275) internal successors, (51), 42 states have internal predecessors, (51), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-29 01:18:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2023-11-29 01:18:53,849 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 29 [2023-11-29 01:18:53,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:53,850 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2023-11-29 01:18:53,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2023-11-29 01:18:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2023-11-29 01:18:53,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 01:18:53,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:53,851 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] [2023-11-29 01:18:53,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:18:53,852 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:53,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:53,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1663723829, now seen corresponding path program 1 times [2023-11-29 01:18:53,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:53,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35019682] [2023-11-29 01:18:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:53,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:54,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:54,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:54,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:54,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35019682] [2023-11-29 01:18:54,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35019682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:54,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:54,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:18:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114107767] [2023-11-29 01:18:54,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:54,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:18:54,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:54,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:18:54,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:18:54,056 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2023-11-29 01:18:54,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:54,159 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions. [2023-11-29 01:18:54,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:18:54,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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 [2023-11-29 01:18:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:54,161 INFO L225 Difference]: With dead ends: 113 [2023-11-29 01:18:54,161 INFO L226 Difference]: Without dead ends: 64 [2023-11-29 01:18:54,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:18:54,163 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 8 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:54,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 256 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:18:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-29 01:18:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2023-11-29 01:18:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 43 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-29 01:18:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2023-11-29 01:18:54,176 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 30 [2023-11-29 01:18:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:54,176 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2023-11-29 01:18:54,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2023-11-29 01:18:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2023-11-29 01:18:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 01:18:54,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:54,178 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] [2023-11-29 01:18:54,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:18:54,178 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:54,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:54,179 INFO L85 PathProgramCache]: Analyzing trace with hash 853391152, now seen corresponding path program 1 times [2023-11-29 01:18:54,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:54,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655816471] [2023-11-29 01:18:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:54,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:18:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:54,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655816471] [2023-11-29 01:18:54,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655816471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:54,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:54,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:18:54,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621007585] [2023-11-29 01:18:54,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:54,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:18:54,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:54,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:18:54,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:18:54,504 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2023-11-29 01:18:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:54,584 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2023-11-29 01:18:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:18:54,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 37 [2023-11-29 01:18:54,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:54,586 INFO L225 Difference]: With dead ends: 72 [2023-11-29 01:18:54,586 INFO L226 Difference]: Without dead ends: 70 [2023-11-29 01:18:54,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:18:54,587 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 7 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:54,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 350 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:18:54,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-29 01:18:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2023-11-29 01:18:54,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 44 states have internal predecessors, (53), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-29 01:18:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2023-11-29 01:18:54,598 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 37 [2023-11-29 01:18:54,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:54,598 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2023-11-29 01:18:54,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2023-11-29 01:18:54,599 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2023-11-29 01:18:54,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:18:54,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:54,600 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:18:54,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:18:54,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:54,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1544791511, now seen corresponding path program 1 times [2023-11-29 01:18:54,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:54,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772982277] [2023-11-29 01:18:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:54,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:18:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:18:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:18:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:18:55,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:55,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772982277] [2023-11-29 01:18:55,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772982277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:55,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:55,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:18:55,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105187566] [2023-11-29 01:18:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:55,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:18:55,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:55,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:18:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:18:55,238 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:18:55,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:55,443 INFO L93 Difference]: Finished difference Result 120 states and 146 transitions. [2023-11-29 01:18:55,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:18:55,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2023-11-29 01:18:55,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:55,445 INFO L225 Difference]: With dead ends: 120 [2023-11-29 01:18:55,445 INFO L226 Difference]: Without dead ends: 65 [2023-11-29 01:18:55,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:18:55,447 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 28 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:55,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 291 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:18:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-29 01:18:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-29 01:18:55,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 47 states have internal predecessors, (56), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-29 01:18:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2023-11-29 01:18:55,458 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 40 [2023-11-29 01:18:55,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:55,458 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2023-11-29 01:18:55,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:18:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2023-11-29 01:18:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:18:55,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:55,460 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:18:55,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:18:55,460 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:55,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:55,460 INFO L85 PathProgramCache]: Analyzing trace with hash -260646823, now seen corresponding path program 1 times [2023-11-29 01:18:55,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:55,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782899958] [2023-11-29 01:18:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:55,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:18:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:18:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:18:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:18:55,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:55,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782899958] [2023-11-29 01:18:55,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782899958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:55,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:55,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:18:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911872806] [2023-11-29 01:18:55,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:55,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:18:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:18:55,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:18:55,963 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:18:56,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:56,230 INFO L93 Difference]: Finished difference Result 166 states and 213 transitions. [2023-11-29 01:18:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:18:56,231 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2023-11-29 01:18:56,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:56,232 INFO L225 Difference]: With dead ends: 166 [2023-11-29 01:18:56,232 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 01:18:56,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:18:56,234 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 84 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:56,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 342 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:18:56,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 01:18:56,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 81. [2023-11-29 01:18:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 62 states have internal predecessors, (78), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-29 01:18:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2023-11-29 01:18:56,249 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 40 [2023-11-29 01:18:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:56,250 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2023-11-29 01:18:56,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:18:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2023-11-29 01:18:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:18:56,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:56,252 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:18:56,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:18:56,252 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:56,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:56,252 INFO L85 PathProgramCache]: Analyzing trace with hash -120098213, now seen corresponding path program 1 times [2023-11-29 01:18:56,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:56,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125379771] [2023-11-29 01:18:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:56,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:56,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:18:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:18:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:18:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:18:56,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:56,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125379771] [2023-11-29 01:18:56,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125379771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:56,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:56,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:18:56,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625663283] [2023-11-29 01:18:56,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:56,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:18:56,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:56,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:18:56,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:18:56,978 INFO L87 Difference]: Start difference. First operand 81 states and 104 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:18:57,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:57,292 INFO L93 Difference]: Finished difference Result 187 states and 246 transitions. [2023-11-29 01:18:57,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:18:57,293 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2023-11-29 01:18:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:57,295 INFO L225 Difference]: With dead ends: 187 [2023-11-29 01:18:57,295 INFO L226 Difference]: Without dead ends: 112 [2023-11-29 01:18:57,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:18:57,296 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 51 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:57,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 425 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:18:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-29 01:18:57,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 87. [2023-11-29 01:18:57,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 68 states have internal predecessors, (87), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-29 01:18:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2023-11-29 01:18:57,311 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 40 [2023-11-29 01:18:57,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:57,311 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2023-11-29 01:18:57,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:18:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2023-11-29 01:18:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:18:57,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:57,313 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:18:57,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:18:57,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:57,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1803129821, now seen corresponding path program 1 times [2023-11-29 01:18:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:57,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076923087] [2023-11-29 01:18:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:57,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:57,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:57,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:57,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:18:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:18:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:18:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:18:57,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076923087] [2023-11-29 01:18:57,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076923087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:57,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:57,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:18:57,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192636784] [2023-11-29 01:18:57,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:57,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:18:57,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:57,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:18:57,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:18:57,720 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:18:57,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:57,992 INFO L93 Difference]: Finished difference Result 204 states and 271 transitions. [2023-11-29 01:18:57,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:18:57,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2023-11-29 01:18:57,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:57,994 INFO L225 Difference]: With dead ends: 204 [2023-11-29 01:18:57,994 INFO L226 Difference]: Without dead ends: 123 [2023-11-29 01:18:57,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:18:57,995 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 54 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:57,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 429 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:18:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-29 01:18:58,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 87. [2023-11-29 01:18:58,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 68 states have internal predecessors, (87), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-29 01:18:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2023-11-29 01:18:58,010 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 40 [2023-11-29 01:18:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:58,010 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2023-11-29 01:18:58,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 01:18:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2023-11-29 01:18:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:18:58,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:58,012 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:18:58,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:18:58,012 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:58,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:58,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1125556571, now seen corresponding path program 1 times [2023-11-29 01:18:58,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:58,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846092994] [2023-11-29 01:18:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:58,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:18:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:18:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:18:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:18:58,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846092994] [2023-11-29 01:18:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846092994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:58,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:18:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242864635] [2023-11-29 01:18:58,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:58,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:18:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:58,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:18:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:18:58,123 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:18:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:58,169 INFO L93 Difference]: Finished difference Result 170 states and 226 transitions. [2023-11-29 01:18:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:18:58,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2023-11-29 01:18:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:58,171 INFO L225 Difference]: With dead ends: 170 [2023-11-29 01:18:58,171 INFO L226 Difference]: Without dead ends: 89 [2023-11-29 01:18:58,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:18:58,172 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 14 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:58,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 190 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:18:58,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-29 01:18:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2023-11-29 01:18:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 66 states have internal predecessors, (83), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-29 01:18:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2023-11-29 01:18:58,185 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 40 [2023-11-29 01:18:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:58,185 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2023-11-29 01:18:58,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:18:58,186 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2023-11-29 01:18:58,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:18:58,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:58,186 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:18:58,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:18:58,187 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:58,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1246182691, now seen corresponding path program 1 times [2023-11-29 01:18:58,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:58,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193653957] [2023-11-29 01:18:58,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:58,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:18:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:18:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:18:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:18:58,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193653957] [2023-11-29 01:18:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193653957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:58,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:58,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:18:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77361487] [2023-11-29 01:18:58,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:58,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:18:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:58,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:18:58,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:18:58,291 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:18:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:58,349 INFO L93 Difference]: Finished difference Result 169 states and 223 transitions. [2023-11-29 01:18:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:18:58,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2023-11-29 01:18:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:58,351 INFO L225 Difference]: With dead ends: 169 [2023-11-29 01:18:58,351 INFO L226 Difference]: Without dead ends: 90 [2023-11-29 01:18:58,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:18:58,352 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:58,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 181 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:18:58,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-29 01:18:58,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2023-11-29 01:18:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 66 states have internal predecessors, (81), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-29 01:18:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2023-11-29 01:18:58,362 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 40 [2023-11-29 01:18:58,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:58,362 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2023-11-29 01:18:58,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:18:58,363 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2023-11-29 01:18:58,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:18:58,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:58,364 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:18:58,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:18:58,364 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:58,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:58,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1105634081, now seen corresponding path program 1 times [2023-11-29 01:18:58,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:58,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439566293] [2023-11-29 01:18:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:58,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 01:18:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 01:18:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:18:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:18:58,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:58,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439566293] [2023-11-29 01:18:58,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439566293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:58,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:58,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:18:58,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992323951] [2023-11-29 01:18:58,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:58,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:18:58,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:58,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:18:58,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:18:58,505 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 01:18:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:58,581 INFO L93 Difference]: Finished difference Result 181 states and 229 transitions. [2023-11-29 01:18:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:18:58,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2023-11-29 01:18:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:58,582 INFO L225 Difference]: With dead ends: 181 [2023-11-29 01:18:58,582 INFO L226 Difference]: Without dead ends: 78 [2023-11-29 01:18:58,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:18:58,584 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 28 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:58,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 345 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:18:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-29 01:18:58,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-29 01:18:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 59 states have internal predecessors, (71), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-29 01:18:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2023-11-29 01:18:58,595 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 40 [2023-11-29 01:18:58,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:58,595 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2023-11-29 01:18:58,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 01:18:58,595 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2023-11-29 01:18:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 01:18:58,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:58,596 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] [2023-11-29 01:18:58,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:18:58,596 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:18:58,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:58,597 INFO L85 PathProgramCache]: Analyzing trace with hash 512098045, now seen corresponding path program 1 times [2023-11-29 01:18:58,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:58,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14576335] [2023-11-29 01:18:58,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:58,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 01:18:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 01:18:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:59,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 01:18:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:59,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:59,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14576335] [2023-11-29 01:18:59,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14576335] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:18:59,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351006890] [2023-11-29 01:18:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:59,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:18:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:18:59,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:18:59,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:18:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:59,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 01:18:59,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:19:03,528 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$#2.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) 0))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$#2.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) 0)))) is different from true [2023-11-29 01:19:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:03,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:19:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:04,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351006890] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:19:04,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:19:04,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 25 [2023-11-29 01:19:04,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443396798] [2023-11-29 01:19:04,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:19:04,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:19:04,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:04,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:19:04,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=493, Unknown=1, NotChecked=44, Total=600 [2023-11-29 01:19:04,051 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand has 25 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 8 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 01:19:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:19:05,398 INFO L93 Difference]: Finished difference Result 243 states and 328 transitions. [2023-11-29 01:19:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:19:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 8 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 39 [2023-11-29 01:19:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:19:05,401 INFO L225 Difference]: With dead ends: 243 [2023-11-29 01:19:05,401 INFO L226 Difference]: Without dead ends: 176 [2023-11-29 01:19:05,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=242, Invalid=1567, Unknown=1, NotChecked=82, Total=1892 [2023-11-29 01:19:05,403 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 256 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 55 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:19:05,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 735 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 642 Invalid, 1 Unknown, 331 Unchecked, 0.6s Time] [2023-11-29 01:19:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-29 01:19:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 96. [2023-11-29 01:19:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 1.295774647887324) internal successors, (92), 74 states have internal predecessors, (92), 14 states have call successors, (14), 8 states have call predecessors, (14), 10 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) [2023-11-29 01:19:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 124 transitions. [2023-11-29 01:19:05,418 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 124 transitions. Word has length 39 [2023-11-29 01:19:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:19:05,419 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 124 transitions. [2023-11-29 01:19:05,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 8 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 01:19:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 124 transitions. [2023-11-29 01:19:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 01:19:05,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:19:05,420 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] [2023-11-29 01:19:05,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:19:05,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:19:05,621 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:19:05,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:19:05,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1618550106, now seen corresponding path program 1 times [2023-11-29 01:19:05,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:19:05,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528199332] [2023-11-29 01:19:05,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:05,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:19:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:19:05,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:19:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:19:05,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:19:05,683 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:19:05,684 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 01:19:05,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:19:05,688 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:19:05,691 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:19:05,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem307 [2023-11-29 01:19:05,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem307 [2023-11-29 01:19:05,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated [2023-11-29 01:19:05,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem307 [2023-11-29 01:19:05,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem309 [2023-11-29 01:19:05,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated [2023-11-29 01:19:05,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem307 [2023-11-29 01:19:05,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem309 [2023-11-29 01:19:05,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated [2023-11-29 01:19:05,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short312 could not be translated [2023-11-29 01:19:05,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem307 [2023-11-29 01:19:05,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short312 could not be translated [2023-11-29 01:19:05,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,721 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem309 [2023-11-29 01:19:05,721 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,721 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,721 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated [2023-11-29 01:19:05,721 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem311 [2023-11-29 01:19:05,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated [2023-11-29 01:19:05,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem314 [2023-11-29 01:19:05,723 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated [2023-11-29 01:19:05,724 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated [2023-11-29 01:19:05,724 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short318 could not be translated [2023-11-29 01:19:05,724 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem314 [2023-11-29 01:19:05,724 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated [2023-11-29 01:19:05,724 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem316 [2023-11-29 01:19:05,725 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short318 could not be translated [2023-11-29 01:19:05,725 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem317 [2023-11-29 01:19:05,725 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem314 [2023-11-29 01:19:05,725 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret324 could not be translated [2023-11-29 01:19:05,726 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret326 could not be translated [2023-11-29 01:19:05,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:19:05 BoogieIcfgContainer [2023-11-29 01:19:05,738 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:19:05,738 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:19:05,738 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:19:05,738 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:19:05,739 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:18:52" (3/4) ... [2023-11-29 01:19:05,739 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-29 01:19:05,748 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,749 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,749 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,749 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,749 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem307 [2023-11-29 01:19:05,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem307 [2023-11-29 01:19:05,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,751 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated [2023-11-29 01:19:05,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem307 [2023-11-29 01:19:05,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem309 [2023-11-29 01:19:05,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated [2023-11-29 01:19:05,752 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated [2023-11-29 01:19:05,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem307 [2023-11-29 01:19:05,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem309 [2023-11-29 01:19:05,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short312 could not be translated [2023-11-29 01:19:05,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem305 [2023-11-29 01:19:05,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem307 [2023-11-29 01:19:05,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short312 could not be translated [2023-11-29 01:19:05,754 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem309 [2023-11-29 01:19:05,754 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated [2023-11-29 01:19:05,754 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated [2023-11-29 01:19:05,754 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem311 [2023-11-29 01:19:05,754 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated [2023-11-29 01:19:05,755 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated [2023-11-29 01:19:05,755 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem314 [2023-11-29 01:19:05,755 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated [2023-11-29 01:19:05,756 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem314 [2023-11-29 01:19:05,756 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated [2023-11-29 01:19:05,756 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short318 could not be translated [2023-11-29 01:19:05,756 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem317 [2023-11-29 01:19:05,756 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem314 [2023-11-29 01:19:05,757 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated [2023-11-29 01:19:05,757 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short318 could not be translated [2023-11-29 01:19:05,757 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem316 [2023-11-29 01:19:05,757 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret324 could not be translated [2023-11-29 01:19:05,758 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret326 could not be translated [2023-11-29 01:19:05,791 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:19:05,791 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:19:05,792 INFO L158 Benchmark]: Toolchain (without parser) took 16399.63ms. Allocated memory was 155.2MB in the beginning and 339.7MB in the end (delta: 184.5MB). Free memory was 110.3MB in the beginning and 122.4MB in the end (delta: -12.1MB). Peak memory consumption was 171.6MB. Max. memory is 16.1GB. [2023-11-29 01:19:05,792 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:19:05,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1923.41ms. Allocated memory is still 155.2MB. Free memory was 110.3MB in the beginning and 66.4MB in the end (delta: 43.9MB). Peak memory consumption was 87.0MB. Max. memory is 16.1GB. [2023-11-29 01:19:05,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.09ms. Allocated memory is still 155.2MB. Free memory was 66.4MB in the beginning and 61.0MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 01:19:05,794 INFO L158 Benchmark]: Boogie Preprocessor took 91.42ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 61.0MB in the beginning and 140.4MB in the end (delta: -79.3MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2023-11-29 01:19:05,794 INFO L158 Benchmark]: RCFGBuilder took 490.41ms. Allocated memory is still 186.6MB. Free memory was 140.4MB in the beginning and 116.3MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 01:19:05,795 INFO L158 Benchmark]: TraceAbstraction took 13733.23ms. Allocated memory was 186.6MB in the beginning and 339.7MB in the end (delta: 153.1MB). Free memory was 116.3MB in the beginning and 127.6MB in the end (delta: -11.3MB). Peak memory consumption was 142.8MB. Max. memory is 16.1GB. [2023-11-29 01:19:05,795 INFO L158 Benchmark]: Witness Printer took 53.28ms. Allocated memory is still 339.7MB. Free memory was 127.6MB in the beginning and 122.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:19:05,797 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 111.1MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1923.41ms. Allocated memory is still 155.2MB. Free memory was 110.3MB in the beginning and 66.4MB in the end (delta: 43.9MB). Peak memory consumption was 87.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.09ms. Allocated memory is still 155.2MB. Free memory was 66.4MB in the beginning and 61.0MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.42ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 61.0MB in the beginning and 140.4MB in the end (delta: -79.3MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * RCFGBuilder took 490.41ms. Allocated memory is still 186.6MB. Free memory was 140.4MB in the beginning and 116.3MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 13733.23ms. Allocated memory was 186.6MB in the beginning and 339.7MB in the end (delta: 153.1MB). Free memory was 116.3MB in the beginning and 127.6MB in the end (delta: -11.3MB). Peak memory consumption was 142.8MB. Max. memory is 16.1GB. * Witness Printer took 53.28ms. Allocated memory is still 339.7MB. Free memory was 127.6MB in the beginning and 122.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem307 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem307 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem307 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem309 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem307 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem309 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short312 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem307 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short312 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem309 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem311 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem314 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short318 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem314 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem316 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short318 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem317 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem314 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret324 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret326 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem307 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem307 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem307 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem309 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem307 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem309 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short312 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem305 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem307 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short312 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem309 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short306 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short308 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem311 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short310 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem314 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem314 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short318 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem317 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem314 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short315 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short318 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem316 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret324 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret326 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6901-L6906] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7326] static __thread int tl_last_error = 0; [L7355] CALL aws_linked_list_init_harness() [L7344] struct aws_linked_list list; VAL [list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7350] CALL aws_linked_list_init(&list) VAL [list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4771] CALL assume_abort_if_not((list)) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4771] RET assume_abort_if_not((list)) VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4772] list->head.next = &list->tail [L4773-L4774] list->head.prev = ((void *)0) [L4776] list->tail.prev = &list->head [L4777-L4778] list->tail.next = ((void *)0) VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4780] CALL, EXPR aws_linked_list_is_valid(list) VAL [list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694] EXPR list && list->head.next VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694] EXPR list && list->head.next [L4694] EXPR list->head.next [L4694] EXPR list && list->head.next VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) [L4694] EXPR list->head.prev [L4694-L4695] EXPR list && list->head.next && list->head.prev == ((void *)0) VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev [L4696] EXPR list->tail.prev [L4694-L4696] EXPR list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) [L4696] EXPR list->tail.next [L4694-L4697] list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4694-L4697] COND TRUE list && list->head.next && list->head.prev == ((void *)0) && list->tail.prev && list->tail.next == ((void *)0) [L4700] CALL, EXPR aws_linked_list_is_valid_deep(list) [L4734] COND FALSE !(!list) [L4740] const struct aws_linked_list_node *temp = &list->head; [L4743-L4746] _Bool head_reaches_tail = 0 ; VAL [head_reaches_tail=0, list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, temp={6:0}, tl_last_error=0] [L4750] COND TRUE \read(*temp) VAL [head_reaches_tail=0, list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, temp={6:0}, tl_last_error=0] [L4751] COND FALSE !(temp == &list->tail) VAL [head_reaches_tail=0, list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, temp={6:0}, tl_last_error=0] [L4756] CALL, EXPR aws_linked_list_node_next_is_valid(temp) VAL [node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next VAL [node={6:0}, node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next [L4718] EXPR node->next [L4718] EXPR node && node->next VAL [node={6:0}, node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next && node->next->prev == node VAL [node={6:0}, node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] EXPR node && node->next && node->next->prev == node [L4718] EXPR node->next [L4718] EXPR node->next->prev [L4718] EXPR node && node->next && node->next->prev == node VAL [node={6:0}, node={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4718] return node && node->next && node->next->prev == node; [L4756] RET, EXPR aws_linked_list_node_next_is_valid(temp) VAL [head_reaches_tail=0, list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, temp={6:0}, tl_last_error=0] [L4756] COND FALSE !(!aws_linked_list_node_next_is_valid(temp)) [L4762] EXPR temp->next [L4762] temp = temp->next [L4750] COND TRUE \read(*temp) VAL [head_reaches_tail=0, list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, temp={6:16}, tl_last_error=0] [L4751] COND TRUE temp == &list->tail [L4752-L4753] head_reaches_tail = 1 VAL [head_reaches_tail=1, list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, temp={6:16}, tl_last_error=0] [L4764] return head_reaches_tail; VAL [\result=1, head_reaches_tail=1, list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, temp={6:16}, tl_last_error=0] [L4700] RET, EXPR aws_linked_list_is_valid_deep(list) [L4700] return aws_linked_list_is_valid_deep(list); [L4780] RET, EXPR aws_linked_list_is_valid(list) VAL [list={6:0}, list={6:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4780] CALL __VERIFIER_assert(!((aws_linked_list_is_valid(list)))) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.6s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 619 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 587 mSDsluCounter, 4444 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 331 IncrementalHoareTripleChecker+Unchecked, 3584 mSDsCounter, 156 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1715 IncrementalHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 156 mSolverCounterUnsat, 860 mSDtfsCounter, 1715 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=14, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 190 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 571 NumberOfCodeBlocks, 571 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 554 ConstructedInterpolants, 7 QuantifiedInterpolants, 2245 SizeOfPredicates, 9 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 42/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-29 01:19:05,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe6b0a2-b134-4f8c-9187-c63a3c8a8d87/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE