./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_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_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/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_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/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_8232026b-7937-453b-8f54-e13a799ac910/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 1a8b6c26388a304cc0f7eb4ee9884a8aba034f0011f9928d095d792e0fe01855 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:10:44,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:10:45,047 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 02:10:45,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:10:45,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:10:45,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:10:45,075 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:10:45,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:10:45,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:10:45,077 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:10:45,078 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:10:45,078 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:10:45,079 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:10:45,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:10:45,080 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:10:45,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:10:45,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:10:45,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:10:45,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:10:45,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:10:45,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:10:45,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:10:45,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:10:45,084 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:10:45,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:10:45,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:10:45,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:10:45,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:10:45,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:10:45,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:10:45,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:10:45,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:10:45,088 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:10:45,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:10:45,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:10:45,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:10:45,089 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:10:45,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:10:45,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:10:45,089 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_8232026b-7937-453b-8f54-e13a799ac910/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a8b6c26388a304cc0f7eb4ee9884a8aba034f0011f9928d095d792e0fe01855 [2023-11-29 02:10:45,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:10:45,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:10:45,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:10:45,368 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:10:45,368 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:10:45,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i [2023-11-29 02:10:48,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:10:48,517 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:10:48,518 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i [2023-11-29 02:10:48,546 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/data/b3b98dbdb/92bf5f6188d1412582476eb5789a7f4f/FLAG11315ddb7 [2023-11-29 02:10:48,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/data/b3b98dbdb/92bf5f6188d1412582476eb5789a7f4f [2023-11-29 02:10:48,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:10:48,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:10:48,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:10:48,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:10:48,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:10:48,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:10:48" (1/1) ... [2023-11-29 02:10:48,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3606b3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:48, skipping insertion in model container [2023-11-29 02:10:48,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:10:48" (1/1) ... [2023-11-29 02:10:48,700 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:10:48,965 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_8232026b-7937-453b-8f54-e13a799ac910/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4495,4508] [2023-11-29 02:10:48,975 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_8232026b-7937-453b-8f54-e13a799ac910/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4555,4568] [2023-11-29 02:10:50,030 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,031 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,031 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,032 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,034 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,050 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,050 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,052 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,053 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,055 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,056 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,057 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,057 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,477 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 02:10:50,479 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 02:10:50,480 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 02:10:50,481 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 02:10:50,483 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 02:10:50,484 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 02:10:50,484 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 02:10:50,485 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 02:10:50,486 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 02:10:50,486 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 02:10:50,940 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,941 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,961 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,962 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,968 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,969 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,982 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,983 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:50,985 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:10:51,083 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:10:51,096 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_8232026b-7937-453b-8f54-e13a799ac910/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4495,4508] [2023-11-29 02:10:51,096 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_8232026b-7937-453b-8f54-e13a799ac910/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4555,4568] [2023-11-29 02:10:51,130 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,131 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,138 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,139 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,140 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,140 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,141 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,141 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,171 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 02:10:51,172 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 02:10:51,173 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 02:10:51,174 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 02:10:51,174 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 02:10:51,175 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 02:10:51,175 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 02:10:51,176 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 02:10:51,176 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 02:10:51,176 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 02:10:51,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7544-7555] [2023-11-29 02:10:51,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,288 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,297 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,309 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,309 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,310 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,310 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,311 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,311 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,311 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 02:10:51,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:10:51,603 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,604 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,604 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,604 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,604 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,604 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,604 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,604 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,604 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,604 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,604 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,605 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,605 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,605 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,605 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,605 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,605 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,605 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:51,612 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:10:51,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51 WrapperNode [2023-11-29 02:10:51,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:10:51,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:10:51,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:10:51,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:10:51,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,780 INFO L138 Inliner]: procedures = 773, calls = 2490, calls flagged for inlining = 67, calls inlined = 21, statements flattened = 1362 [2023-11-29 02:10:51,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:10:51,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:10:51,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:10:51,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:10:51,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,801 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,810 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-29 02:10:51,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:10:51,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:10:51,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:10:51,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:10:51,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (1/1) ... [2023-11-29 02:10:51,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:10:51,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:51,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:10:51,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:10:51,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-29 02:10:51,967 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-29 02:10:51,967 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-29 02:10:51,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-29 02:10:51,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 02:10:51,967 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-29 02:10:51,967 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-29 02:10:51,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 02:10:51,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 02:10:51,967 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_create [2023-11-29 02:10:51,968 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_create [2023-11-29 02:10:51,968 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-29 02:10:51,968 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-29 02:10:51,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:10:51,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:10:51,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-29 02:10:51,968 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2023-11-29 02:10:51,968 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2023-11-29 02:10:51,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:10:51,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:10:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 02:10:51,969 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 02:10:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-29 02:10:51,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-29 02:10:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-29 02:10:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-29 02:10:51,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-29 02:10:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:10:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-29 02:10:51,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-29 02:10:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-29 02:10:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-29 02:10:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-29 02:10:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 02:10:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2023-11-29 02:10:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2023-11-29 02:10:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-29 02:10:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-29 02:10:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2023-11-29 02:10:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2023-11-29 02:10:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2023-11-29 02:10:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2023-11-29 02:10:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2023-11-29 02:10:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2023-11-29 02:10:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:10:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-29 02:10:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-29 02:10:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-29 02:10:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2023-11-29 02:10:51,972 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2023-11-29 02:10:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-29 02:10:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-29 02:10:51,972 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-29 02:10:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2023-11-29 02:10:51,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2023-11-29 02:10:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2023-11-29 02:10:51,972 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2023-11-29 02:10:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2023-11-29 02:10:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2023-11-29 02:10:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:10:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:10:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-29 02:10:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-29 02:10:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-29 02:10:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-29 02:10:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-29 02:10:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-29 02:10:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-29 02:10:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-29 02:10:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-29 02:10:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2023-11-29 02:10:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2023-11-29 02:10:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2023-11-29 02:10:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2023-11-29 02:10:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-29 02:10:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-29 02:10:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 02:10:52,316 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:10:52,319 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:10:52,625 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2023-11-29 02:10:52,657 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2023-11-29 02:10:53,418 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2023-11-29 02:10:53,418 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !true; [2023-11-29 02:10:54,207 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:10:54,350 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:10:54,351 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-29 02:10:54,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:10:54 BoogieIcfgContainer [2023-11-29 02:10:54,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:10:54,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:10:54,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:10:54,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:10:54,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:10:48" (1/3) ... [2023-11-29 02:10:54,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481493a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:10:54, skipping insertion in model container [2023-11-29 02:10:54,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:51" (2/3) ... [2023-11-29 02:10:54,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481493a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:10:54, skipping insertion in model container [2023-11-29 02:10:54,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:10:54" (3/3) ... [2023-11-29 02:10:54,361 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_create_harness_negated.i [2023-11-29 02:10:54,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:10:54,382 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:10:54,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:10:54,450 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;@7d5b1450, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:10:54,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:10:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 351 states, 237 states have (on average 1.3670886075949367) internal successors, (324), 234 states have internal predecessors, (324), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-29 02:10:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 02:10:54,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:10:54,473 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:10:54,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:10:54,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:54,479 INFO L85 PathProgramCache]: Analyzing trace with hash 653561781, now seen corresponding path program 1 times [2023-11-29 02:10:54,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:54,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426147842] [2023-11-29 02:10:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:54,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:54,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:54,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426147842] [2023-11-29 02:10:54,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 02:10:54,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165927302] [2023-11-29 02:10:54,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:54,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:54,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:54,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:54,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:10:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:55,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:10:55,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-29 02:10:55,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:55,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165927302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:55,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:10:55,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:10:55,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608681222] [2023-11-29 02:10:55,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:55,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:10:55,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:10:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:10:55,830 INFO L87 Difference]: Start difference. First operand has 351 states, 237 states have (on average 1.3670886075949367) internal successors, (324), 234 states have internal predecessors, (324), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 02:10:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:10:56,080 INFO L93 Difference]: Finished difference Result 698 states and 1046 transitions. [2023-11-29 02:10:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:10:56,082 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 111 [2023-11-29 02:10:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:10:56,096 INFO L225 Difference]: With dead ends: 698 [2023-11-29 02:10:56,096 INFO L226 Difference]: Without dead ends: 347 [2023-11-29 02:10:56,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 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 02:10:56,108 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:10:56,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 458 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:10:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-29 02:10:56,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-11-29 02:10:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 230 states have (on average 1.3434782608695652) internal successors, (309), 232 states have internal predecessors, (309), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-29 02:10:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 479 transitions. [2023-11-29 02:10:56,183 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 479 transitions. Word has length 111 [2023-11-29 02:10:56,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:10:56,184 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 479 transitions. [2023-11-29 02:10:56,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 02:10:56,185 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 479 transitions. [2023-11-29 02:10:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 02:10:56,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:10:56,190 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:10:56,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:10:56,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:56,395 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:10:56,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash -162584657, now seen corresponding path program 1 times [2023-11-29 02:10:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:56,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343813338] [2023-11-29 02:10:56,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:56,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:56,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:10:56,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186613939] [2023-11-29 02:10:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:56,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:56,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:56,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:10:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:57,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:10:57,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 02:10:57,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:57,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:57,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343813338] [2023-11-29 02:10:57,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:10:57,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186613939] [2023-11-29 02:10:57,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186613939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:57,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:10:57,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:10:57,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667853870] [2023-11-29 02:10:57,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:57,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:10:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:10:57,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:10:57,356 INFO L87 Difference]: Start difference. First operand 347 states and 479 transitions. Second operand has 5 states, 4 states have (on average 12.25) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 02:10:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:10:57,693 INFO L93 Difference]: Finished difference Result 690 states and 957 transitions. [2023-11-29 02:10:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:10:57,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 111 [2023-11-29 02:10:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:10:57,700 INFO L225 Difference]: With dead ends: 690 [2023-11-29 02:10:57,701 INFO L226 Difference]: Without dead ends: 351 [2023-11-29 02:10:57,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:10:57,704 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:10:57,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1800 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:10:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-29 02:10:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2023-11-29 02:10:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 233 states have (on average 1.3390557939914163) internal successors, (312), 235 states have internal predecessors, (312), 86 states have call successors, (86), 30 states have call predecessors, (86), 31 states have return successors, (88), 85 states have call predecessors, (88), 84 states have call successors, (88) [2023-11-29 02:10:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 486 transitions. [2023-11-29 02:10:57,740 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 486 transitions. Word has length 111 [2023-11-29 02:10:57,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:10:57,741 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 486 transitions. [2023-11-29 02:10:57,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.25) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 02:10:57,741 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 486 transitions. [2023-11-29 02:10:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:10:57,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:10:57,744 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:10:57,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:10:57,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:57,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:10:57,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1461816441, now seen corresponding path program 1 times [2023-11-29 02:10:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:57,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813269879] [2023-11-29 02:10:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:10:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:10:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:10:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:10:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:10:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:10:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:10:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:10:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:10:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 02:10:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:10:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:10:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:59,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 02:10:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:59,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:10:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:59,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 02:10:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:59,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:10:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:59,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 02:10:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:59,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 02:10:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:59,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 02:10:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 02:10:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 02:10:59,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:59,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813269879] [2023-11-29 02:10:59,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813269879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:59,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:10:59,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:10:59,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875921341] [2023-11-29 02:10:59,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:59,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:10:59,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:59,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:10:59,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:10:59,116 INFO L87 Difference]: Start difference. First operand 351 states and 486 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-29 02:11:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:11:04,076 INFO L93 Difference]: Finished difference Result 765 states and 1071 transitions. [2023-11-29 02:11:04,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:11:04,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 115 [2023-11-29 02:11:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:11:04,081 INFO L225 Difference]: With dead ends: 765 [2023-11-29 02:11:04,082 INFO L226 Difference]: Without dead ends: 426 [2023-11-29 02:11:04,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:11:04,084 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 344 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:11:04,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1223 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 02:11:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-11-29 02:11:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 351. [2023-11-29 02:11:04,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 233 states have (on average 1.3347639484978542) internal successors, (311), 235 states have internal predecessors, (311), 86 states have call successors, (86), 30 states have call predecessors, (86), 31 states have return successors, (88), 85 states have call predecessors, (88), 84 states have call successors, (88) [2023-11-29 02:11:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 485 transitions. [2023-11-29 02:11:04,119 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 485 transitions. Word has length 115 [2023-11-29 02:11:04,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:11:04,119 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 485 transitions. [2023-11-29 02:11:04,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-29 02:11:04,120 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 485 transitions. [2023-11-29 02:11:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:11:04,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:11:04,122 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:04,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:11:04,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:11:04,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:04,123 INFO L85 PathProgramCache]: Analyzing trace with hash 200899191, now seen corresponding path program 1 times [2023-11-29 02:11:04,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:04,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825603006] [2023-11-29 02:11:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:04,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:11:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:11:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:11:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:11:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:11:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:11:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 02:11:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:11:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 02:11:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:11:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 02:11:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:11:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 02:11:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 02:11:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 02:11:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 02:11:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 02:11:05,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:05,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825603006] [2023-11-29 02:11:05,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825603006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:05,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:05,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 02:11:05,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51682749] [2023-11-29 02:11:05,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:05,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:11:05,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:05,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:11:05,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:11:05,694 INFO L87 Difference]: Start difference. First operand 351 states and 485 transitions. Second operand has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-29 02:11:08,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 02:11:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:11:15,191 INFO L93 Difference]: Finished difference Result 761 states and 1063 transitions. [2023-11-29 02:11:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:11:15,192 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 115 [2023-11-29 02:11:15,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:11:15,196 INFO L225 Difference]: With dead ends: 761 [2023-11-29 02:11:15,197 INFO L226 Difference]: Without dead ends: 428 [2023-11-29 02:11:15,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:11:15,199 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 575 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:11:15,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 1938 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-11-29 02:11:15,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-11-29 02:11:15,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 353. [2023-11-29 02:11:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 234 states have (on average 1.3333333333333333) internal successors, (312), 237 states have internal predecessors, (312), 86 states have call successors, (86), 30 states have call predecessors, (86), 32 states have return successors, (89), 85 states have call predecessors, (89), 84 states have call successors, (89) [2023-11-29 02:11:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 487 transitions. [2023-11-29 02:11:15,232 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 487 transitions. Word has length 115 [2023-11-29 02:11:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:11:15,232 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 487 transitions. [2023-11-29 02:11:15,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-29 02:11:15,233 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 487 transitions. [2023-11-29 02:11:15,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:11:15,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:11:15,235 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:15,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:11:15,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:11:15,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:15,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1649857243, now seen corresponding path program 1 times [2023-11-29 02:11:15,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:15,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686945566] [2023-11-29 02:11:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:15,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:11:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:11:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:11:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:11:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:11:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:11:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 02:11:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:11:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 02:11:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 02:11:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 02:11:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 02:11:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:11:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 02:11:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 02:11:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 02:11:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 02:11:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-29 02:11:16,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:16,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686945566] [2023-11-29 02:11:16,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686945566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:16,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813759862] [2023-11-29 02:11:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:16,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:16,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:16,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:16,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:11:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:17,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 02:11:17,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:21,374 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2023-11-29 02:11:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-29 02:11:29,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:29,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813759862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:29,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:29,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-29 02:11:29,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119934006] [2023-11-29 02:11:29,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:29,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:11:29,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:11:29,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2023-11-29 02:11:29,499 INFO L87 Difference]: Start difference. First operand 353 states and 487 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 02:11:37,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 02:11:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:11:41,332 INFO L93 Difference]: Finished difference Result 696 states and 959 transitions. [2023-11-29 02:11:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:11:41,333 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 121 [2023-11-29 02:11:41,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:11:41,335 INFO L225 Difference]: With dead ends: 696 [2023-11-29 02:11:41,335 INFO L226 Difference]: Without dead ends: 359 [2023-11-29 02:11:41,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=64, Invalid=279, Unknown=3, NotChecked=34, Total=380 [2023-11-29 02:11:41,337 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 12 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 490 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:11:41,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2423 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 437 Invalid, 1 Unknown, 490 Unchecked, 11.7s Time] [2023-11-29 02:11:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-29 02:11:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2023-11-29 02:11:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 238 states have (on average 1.3277310924369747) internal successors, (316), 241 states have internal predecessors, (316), 87 states have call successors, (87), 31 states have call predecessors, (87), 33 states have return successors, (90), 86 states have call predecessors, (90), 85 states have call successors, (90) [2023-11-29 02:11:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 493 transitions. [2023-11-29 02:11:41,357 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 493 transitions. Word has length 121 [2023-11-29 02:11:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:11:41,358 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 493 transitions. [2023-11-29 02:11:41,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 02:11:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 493 transitions. [2023-11-29 02:11:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 02:11:41,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:11:41,360 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:41,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:11:41,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:41,561 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:11:41,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:41,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1721551453, now seen corresponding path program 1 times [2023-11-29 02:11:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:41,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834154882] [2023-11-29 02:11:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:41,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:11:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:11:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:11:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:11:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:11:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:11:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 02:11:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:11:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 02:11:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:11:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 02:11:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 02:11:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:11:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 02:11:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 02:11:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:11:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 02:11:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 02:11:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-29 02:11:42,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:42,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834154882] [2023-11-29 02:11:42,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834154882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:42,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:42,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:11:42,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718792440] [2023-11-29 02:11:42,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:42,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:11:42,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:42,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:11:42,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:11:42,571 INFO L87 Difference]: Start difference. First operand 359 states and 493 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 02:11:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:11:47,190 INFO L93 Difference]: Finished difference Result 758 states and 1058 transitions. [2023-11-29 02:11:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:11:47,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 127 [2023-11-29 02:11:47,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:11:47,196 INFO L225 Difference]: With dead ends: 758 [2023-11-29 02:11:47,196 INFO L226 Difference]: Without dead ends: 436 [2023-11-29 02:11:47,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:11:47,199 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 445 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:11:47,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 1446 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 02:11:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-29 02:11:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 361. [2023-11-29 02:11:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 239 states have (on average 1.3263598326359833) internal successors, (317), 243 states have internal predecessors, (317), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (95), 86 states have call predecessors, (95), 85 states have call successors, (95) [2023-11-29 02:11:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 499 transitions. [2023-11-29 02:11:47,233 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 499 transitions. Word has length 127 [2023-11-29 02:11:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:11:47,234 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 499 transitions. [2023-11-29 02:11:47,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 02:11:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 499 transitions. [2023-11-29 02:11:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 02:11:47,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:11:47,237 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:47,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:11:47,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:11:47,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:47,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2077714283, now seen corresponding path program 1 times [2023-11-29 02:11:47,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:47,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359103309] [2023-11-29 02:11:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:47,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:11:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:11:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:11:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:11:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:11:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:11:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 02:11:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 02:11:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 02:11:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:11:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 02:11:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 02:11:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:11:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 02:11:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 02:11:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:11:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 02:11:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:11:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 02:11:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 02:11:48,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:48,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359103309] [2023-11-29 02:11:48,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359103309] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:48,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642408521] [2023-11-29 02:11:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:48,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:48,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:48,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:48,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:11:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:49,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 02:11:49,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:49,689 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 02:11:49,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:49,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642408521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:49,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:49,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 11 [2023-11-29 02:11:49,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532659917] [2023-11-29 02:11:49,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:49,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:11:49,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:11:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:11:49,692 INFO L87 Difference]: Start difference. First operand 361 states and 499 transitions. Second operand has 7 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-29 02:11:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:11:50,617 INFO L93 Difference]: Finished difference Result 719 states and 994 transitions. [2023-11-29 02:11:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:11:50,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 133 [2023-11-29 02:11:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:11:50,621 INFO L225 Difference]: With dead ends: 719 [2023-11-29 02:11:50,621 INFO L226 Difference]: Without dead ends: 363 [2023-11-29 02:11:50,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:11:50,623 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:11:50,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2537 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:11:50,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-29 02:11:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2023-11-29 02:11:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 240 states have (on average 1.325) internal successors, (318), 245 states have internal predecessors, (318), 87 states have call successors, (87), 31 states have call predecessors, (87), 35 states have return successors, (97), 86 states have call predecessors, (97), 85 states have call successors, (97) [2023-11-29 02:11:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 502 transitions. [2023-11-29 02:11:50,650 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 502 transitions. Word has length 133 [2023-11-29 02:11:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:11:50,651 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 502 transitions. [2023-11-29 02:11:50,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-29 02:11:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 502 transitions. [2023-11-29 02:11:50,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 02:11:50,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:11:50,653 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:50,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:11:50,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:50,855 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:11:50,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -185263066, now seen corresponding path program 1 times [2023-11-29 02:11:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:50,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763970600] [2023-11-29 02:11:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:50,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:11:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:11:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 02:11:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 02:11:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 02:11:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:11:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 02:11:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:11:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 02:11:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 02:11:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:11:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 02:11:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 02:11:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 02:11:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 02:11:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 02:11:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 02:11:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 02:11:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:11:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-29 02:11:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-29 02:11:52,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763970600] [2023-11-29 02:11:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763970600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773861606] [2023-11-29 02:11:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:52,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:52,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:52,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:52,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:11:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:53,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 02:11:53,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:53,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 02:11:53,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:11:53,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-11-29 02:11:53,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:53,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 34 [2023-11-29 02:11:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-29 02:11:54,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:55,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773861606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:55,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:11:55,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18] total 25 [2023-11-29 02:11:55,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857356663] [2023-11-29 02:11:55,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:55,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 02:11:55,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 02:11:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2023-11-29 02:11:55,592 INFO L87 Difference]: Start difference. First operand 363 states and 502 transitions. Second operand has 25 states, 21 states have (on average 4.714285714285714) internal successors, (99), 20 states have internal predecessors, (99), 8 states have call successors, (47), 6 states have call predecessors, (47), 9 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) [2023-11-29 02:12:10,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:10,420 INFO L93 Difference]: Finished difference Result 834 states and 1149 transitions. [2023-11-29 02:12:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 02:12:10,421 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 4.714285714285714) internal successors, (99), 20 states have internal predecessors, (99), 8 states have call successors, (47), 6 states have call predecessors, (47), 9 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) Word has length 135 [2023-11-29 02:12:10,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:10,425 INFO L225 Difference]: With dead ends: 834 [2023-11-29 02:12:10,425 INFO L226 Difference]: Without dead ends: 469 [2023-11-29 02:12:10,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=332, Invalid=2748, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 02:12:10,427 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 517 mSDsluCounter, 2815 mSDsCounter, 0 mSdLazyCounter, 4800 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 5025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 4800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:10,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 3061 Invalid, 5025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 4800 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2023-11-29 02:12:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-29 02:12:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 390. [2023-11-29 02:12:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 260 states have (on average 1.3038461538461539) internal successors, (339), 265 states have internal predecessors, (339), 89 states have call successors, (89), 36 states have call predecessors, (89), 40 states have return successors, (99), 88 states have call predecessors, (99), 87 states have call successors, (99) [2023-11-29 02:12:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 527 transitions. [2023-11-29 02:12:10,452 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 527 transitions. Word has length 135 [2023-11-29 02:12:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:10,452 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 527 transitions. [2023-11-29 02:12:10,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 4.714285714285714) internal successors, (99), 20 states have internal predecessors, (99), 8 states have call successors, (47), 6 states have call predecessors, (47), 9 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) [2023-11-29 02:12:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 527 transitions. [2023-11-29 02:12:10,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 02:12:10,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:10,454 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:10,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:12:10,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 02:12:10,655 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:10,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:10,656 INFO L85 PathProgramCache]: Analyzing trace with hash 109641720, now seen corresponding path program 1 times [2023-11-29 02:12:10,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:10,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361909458] [2023-11-29 02:12:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:10,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:10,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:12:10,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249698229] [2023-11-29 02:12:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:10,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:10,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:10,771 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:10,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:12:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:11,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 02:12:11,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-29 02:12:11,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:11,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:11,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361909458] [2023-11-29 02:12:11,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:12:11,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249698229] [2023-11-29 02:12:11,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249698229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:11,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:12:11,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:12:11,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059430142] [2023-11-29 02:12:11,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:11,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:12:11,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:11,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:12:11,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:12:11,548 INFO L87 Difference]: Start difference. First operand 390 states and 527 transitions. Second operand has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-29 02:12:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:12:12,246 INFO L93 Difference]: Finished difference Result 722 states and 989 transitions. [2023-11-29 02:12:12,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:12:12,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 143 [2023-11-29 02:12:12,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:12:12,249 INFO L225 Difference]: With dead ends: 722 [2023-11-29 02:12:12,249 INFO L226 Difference]: Without dead ends: 396 [2023-11-29 02:12:12,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:12:12,251 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 2 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:12:12,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3419 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:12:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-29 02:12:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 391. [2023-11-29 02:12:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 261 states have (on average 1.3026819923371646) internal successors, (340), 265 states have internal predecessors, (340), 89 states have call successors, (89), 36 states have call predecessors, (89), 40 states have return successors, (99), 89 states have call predecessors, (99), 87 states have call successors, (99) [2023-11-29 02:12:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 528 transitions. [2023-11-29 02:12:12,272 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 528 transitions. Word has length 143 [2023-11-29 02:12:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:12:12,272 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 528 transitions. [2023-11-29 02:12:12,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-29 02:12:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 528 transitions. [2023-11-29 02:12:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 02:12:12,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:12:12,275 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:12,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:12:12,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 02:12:12,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:12:12,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash -322734413, now seen corresponding path program 1 times [2023-11-29 02:12:12,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:12,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456101084] [2023-11-29 02:12:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:12,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:12,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:12:12,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221914172] [2023-11-29 02:12:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:12,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:12,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:12,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:12,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8232026b-7937-453b-8f54-e13a799ac910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:12:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:21,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 294 conjunts are in the unsatisfiable core [2023-11-29 02:12:21,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:21,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 02:12:21,541 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 02:12:21,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 02:12:21,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 02:12:34,998 WARN L293 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 848 DAG size of output: 222 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 02:12:34,999 INFO L349 Elim1Store]: treesize reduction 2875, result has 14.2 percent of original size [2023-11-29 02:12:34,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 19 new quantified variables, introduced 156 case distinctions, treesize of input 774 treesize of output 1536