./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:01:37,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:01:38,045 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 21:01:38,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:01:38,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:01:38,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:01:38,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:01:38,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:01:38,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:01:38,081 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:01:38,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:01:38,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:01:38,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:01:38,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:01:38,084 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:01:38,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:01:38,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:01:38,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:01:38,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:01:38,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:01:38,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:01:38,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:01:38,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:01:38,088 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:01:38,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:01:38,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:01:38,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:01:38,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:01:38,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:38,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:01:38,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:01:38,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:01:38,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:01:38,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:01:38,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:01:38,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:01:38,093 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:01:38,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:01:38,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:01:38,093 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_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8b9169d0d63d8238da177db4999afabb0efa6e97e1e7cd257e8474f76788f17 [2023-11-21 21:01:38,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:01:38,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:01:38,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:01:38,431 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:01:38,432 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:01:38,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2023-11-21 21:01:41,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:01:42,414 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:01:42,415 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i [2023-11-21 21:01:42,470 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/data/55192bebe/6075eb0c5d48425fad833e55d4a4bdc1/FLAG2610b63ef [2023-11-21 21:01:42,492 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/data/55192bebe/6075eb0c5d48425fad833e55d4a4bdc1 [2023-11-21 21:01:42,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:01:42,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:01:42,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:42,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:01:42,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:01:42,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:42" (1/1) ... [2023-11-21 21:01:42,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527adb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:42, skipping insertion in model container [2023-11-21 21:01:42,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:42" (1/1) ... [2023-11-21 21:01:42,680 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:01:43,035 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_8d266bad-7407-4e06-aa1c-55b97fbe7a92/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2023-11-21 21:01:43,045 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_8d266bad-7407-4e06-aa1c-55b97fbe7a92/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2023-11-21 21:01:44,348 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,349 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,351 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,353 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,371 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,374 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,375 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,377 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,379 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,380 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:44,951 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 21:01:44,952 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 21:01:44,954 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 21:01:44,956 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 21:01:44,960 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 21:01:44,962 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 21:01:44,964 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 21:01:44,965 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 21:01:44,966 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 21:01:44,970 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 21:01:45,220 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,237 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,328 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,329 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,330 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,330 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,331 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,335 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,335 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,336 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,339 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,340 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,356 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,368 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:45,457 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:01:45,475 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_8d266bad-7407-4e06-aa1c-55b97fbe7a92/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4497,4510] [2023-11-21 21:01:45,476 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_8d266bad-7407-4e06-aa1c-55b97fbe7a92/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_harness.i[4557,4570] [2023-11-21 21:01:45,533 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,533 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,534 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,544 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,548 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,549 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,549 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,550 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,622 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 21:01:45,630 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 21:01:45,631 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 21:01:45,633 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 21:01:45,634 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 21:01:45,635 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 21:01:45,635 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 21:01:45,638 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 21:01:45,639 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 21:01:45,640 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 21:01:45,719 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,726 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,735 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7771-7782] [2023-11-21 21:01:45,772 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,773 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,775 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,775 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,776 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,778 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,778 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,779 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,779 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,780 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,783 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,783 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,783 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,787 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,787 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,848 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,849 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 21:01:45,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:46,228 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,229 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,229 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,229 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,229 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,230 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,230 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,230 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,230 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,230 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,230 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,230 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,231 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,231 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,231 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:46,239 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:01:46,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46 WrapperNode [2023-11-21 21:01:46,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:46,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:46,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:01:46,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:01:46,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,496 INFO L138 Inliner]: procedures = 696, calls = 1880, calls flagged for inlining = 60, calls inlined = 19, statements flattened = 1165 [2023-11-21 21:01:46,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:46,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:01:46,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:01:46,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:01:46,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,542 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,713 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure #Ultimate.C_memset is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2023-11-21 21:01:46,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:01:46,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:01:46,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:01:46,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:01:46,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (1/1) ... [2023-11-21 21:01:46,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:46,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:46,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:01:46,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:01:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-21 21:01:46,983 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-21 21:01:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_init_dynamic [2023-11-21 21:01:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_init_dynamic [2023-11-21 21:01:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-21 21:01:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-21 21:01:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:01:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-21 21:01:46,984 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-21 21:01:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-21 21:01:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-21 21:01:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 21:01:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 21:01:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-21 21:01:46,985 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-21 21:01:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-21 21:01:46,986 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-21 21:01:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 21:01:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-21 21:01:46,986 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-21 21:01:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 21:01:46,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 21:01:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:01:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:01:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 21:01:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-21 21:01:46,991 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-21 21:01:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-21 21:01:46,992 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-21 21:01:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:01:46,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:01:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 21:01:46,993 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 21:01:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-21 21:01:46,993 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-21 21:01:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-21 21:01:46,993 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-21 21:01:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-21 21:01:46,995 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-21 21:01:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-21 21:01:46,996 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-21 21:01:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-21 21:01:46,997 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-21 21:01:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 21:01:46,997 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 21:01:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 21:01:46,997 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 21:01:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-21 21:01:46,997 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-21 21:01:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-21 21:01:46,998 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-21 21:01:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-21 21:01:46,998 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-21 21:01:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:01:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-21 21:01:46,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-21 21:01:46,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 21:01:46,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 21:01:46,999 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-21 21:01:46,999 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-21 21:01:46,999 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-21 21:01:46,999 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-21 21:01:46,999 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-21 21:01:47,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-21 21:01:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-21 21:01:47,000 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-21 21:01:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:01:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-21 21:01:47,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-21 21:01:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-11-21 21:01:47,001 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-11-21 21:01:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-21 21:01:47,001 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-21 21:01:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 21:01:47,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 21:01:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 21:01:47,475 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:01:47,479 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:01:49,139 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:01:49,685 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:01:49,686 INFO L308 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-21 21:01:49,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:49 BoogieIcfgContainer [2023-11-21 21:01:49,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:01:49,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:01:49,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:01:49,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:01:49,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:01:42" (1/3) ... [2023-11-21 21:01:49,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1f4c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:49, skipping insertion in model container [2023-11-21 21:01:49,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:46" (2/3) ... [2023-11-21 21:01:49,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1f4c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:49, skipping insertion in model container [2023-11-21 21:01:49,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:49" (3/3) ... [2023-11-21 21:01:49,701 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_harness.i [2023-11-21 21:01:49,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:01:49,729 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 21:01:49,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:01:49,847 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;@1a963d07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:01:49,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 21:01:49,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 463 states, 233 states have (on average 1.201716738197425) internal successors, (280), 236 states have internal predecessors, (280), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-11-21 21:01:49,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-21 21:01:49,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:49,881 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:49,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:49,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:49,894 INFO L85 PathProgramCache]: Analyzing trace with hash -16308842, now seen corresponding path program 1 times [2023-11-21 21:01:49,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:49,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878401815] [2023-11-21 21:01:49,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:49,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:01:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:01:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:01:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:01:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 21:01:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 21:01:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 21:01:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 21:01:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-21 21:01:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-21 21:01:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-21 21:01:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-21 21:01:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-21 21:01:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-21 21:01:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-21 21:01:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-21 21:01:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-21 21:01:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-21 21:01:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-21 21:01:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-21 21:01:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-21 21:01:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-21 21:01:51,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:51,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878401815] [2023-11-21 21:01:51,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878401815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:51,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389301300] [2023-11-21 21:01:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:51,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:51,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:51,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:51,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:01:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:52,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 2387 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 21:01:52,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-21 21:01:52,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:52,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389301300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:52,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:01:52,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-21 21:01:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338845288] [2023-11-21 21:01:52,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:52,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:01:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:52,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:01:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 21:01:52,926 INFO L87 Difference]: Start difference. First operand has 463 states, 233 states have (on average 1.201716738197425) internal successors, (280), 236 states have internal predecessors, (280), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-21 21:01:53,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:53,935 INFO L93 Difference]: Finished difference Result 899 states and 1372 transitions. [2023-11-21 21:01:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:01:53,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 125 [2023-11-21 21:01:53,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:53,990 INFO L225 Difference]: With dead ends: 899 [2023-11-21 21:01:53,991 INFO L226 Difference]: Without dead ends: 462 [2023-11-21 21:01:54,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:01:54,022 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 54 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:54,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 2296 Invalid, 266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 21:01:54,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-21 21:01:54,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2023-11-21 21:01:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 232 states have (on average 1.1896551724137931) internal successors, (276), 235 states have internal predecessors, (276), 196 states have call successors, (196), 32 states have call predecessors, (196), 32 states have return successors, (204), 194 states have call predecessors, (204), 194 states have call successors, (204) [2023-11-21 21:01:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 676 transitions. [2023-11-21 21:01:54,204 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 676 transitions. Word has length 125 [2023-11-21 21:01:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:54,205 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 676 transitions. [2023-11-21 21:01:54,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-21 21:01:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 676 transitions. [2023-11-21 21:01:54,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-21 21:01:54,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:54,225 INFO L195 NwaCegarLoop]: trace histogram [13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:54,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 21:01:54,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:54,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:54,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:54,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1438598845, now seen corresponding path program 1 times [2023-11-21 21:01:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:54,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106899898] [2023-11-21 21:01:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:54,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:01:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:01:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:01:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:01:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 21:01:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-21 21:01:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-21 21:01:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-21 21:01:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-21 21:01:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-21 21:01:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-21 21:01:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-21 21:01:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-21 21:01:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-21 21:01:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-21 21:01:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-21 21:01:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 21:01:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-21 21:01:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-21 21:01:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-21 21:01:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-21 21:01:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-21 21:01:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:55,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106899898] [2023-11-21 21:01:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106899898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:01:55,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902951915] [2023-11-21 21:01:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:55,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:55,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:55,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:55,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 21:01:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:56,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 21:01:56,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-21 21:01:56,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:56,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902951915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:56,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:01:56,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-21 21:01:56,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063502976] [2023-11-21 21:01:56,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:56,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:01:56,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:56,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:01:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-21 21:01:56,522 INFO L87 Difference]: Start difference. First operand 462 states and 676 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-21 21:01:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:57,909 INFO L93 Difference]: Finished difference Result 909 states and 1372 transitions. [2023-11-21 21:01:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:01:57,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 133 [2023-11-21 21:01:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:57,918 INFO L225 Difference]: With dead ends: 909 [2023-11-21 21:01:57,922 INFO L226 Difference]: Without dead ends: 475 [2023-11-21 21:01:57,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-21 21:01:57,927 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 72 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:57,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 3243 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 21:01:57,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-21 21:01:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2023-11-21 21:01:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-21 21:01:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 722 transitions. [2023-11-21 21:01:58,024 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 722 transitions. Word has length 133 [2023-11-21 21:01:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:58,027 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 722 transitions. [2023-11-21 21:01:58,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-21 21:01:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 722 transitions. [2023-11-21 21:01:58,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-21 21:01:58,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:58,032 INFO L195 NwaCegarLoop]: trace histogram [13, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:58,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:58,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:58,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:58,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:58,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1570020207, now seen corresponding path program 1 times [2023-11-21 21:01:58,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:58,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029602711] [2023-11-21 21:01:58,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:58,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:58,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:01:58,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090796830] [2023-11-21 21:01:58,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:58,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:01:58,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:58,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:01:58,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 21:01:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:59,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 21:01:59,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-21 21:01:59,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:59,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:59,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029602711] [2023-11-21 21:01:59,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:01:59,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090796830] [2023-11-21 21:01:59,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090796830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:59,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:59,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:01:59,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992265969] [2023-11-21 21:01:59,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:59,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:01:59,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:59,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:01:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:01:59,279 INFO L87 Difference]: Start difference. First operand 473 states and 722 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-21 21:01:59,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:59,975 INFO L93 Difference]: Finished difference Result 924 states and 1431 transitions. [2023-11-21 21:01:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:01:59,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 142 [2023-11-21 21:01:59,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:59,982 INFO L225 Difference]: With dead ends: 924 [2023-11-21 21:01:59,982 INFO L226 Difference]: Without dead ends: 479 [2023-11-21 21:01:59,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:01:59,990 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 61 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:59,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2864 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 21:01:59,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-21 21:02:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 473. [2023-11-21 21:02:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-21 21:02:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 722 transitions. [2023-11-21 21:02:00,043 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 722 transitions. Word has length 142 [2023-11-21 21:02:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:00,044 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 722 transitions. [2023-11-21 21:02:00,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-21 21:02:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 722 transitions. [2023-11-21 21:02:00,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-21 21:02:00,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:00,047 INFO L195 NwaCegarLoop]: trace histogram [13, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:00,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:00,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:00,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:00,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:00,271 INFO L85 PathProgramCache]: Analyzing trace with hash -746758171, now seen corresponding path program 1 times [2023-11-21 21:02:00,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:00,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044873148] [2023-11-21 21:02:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:00,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:00,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:02:00,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291873658] [2023-11-21 21:02:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:00,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:00,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:00,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:00,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 21:02:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:01,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:02:01,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-21 21:02:01,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044873148] [2023-11-21 21:02:01,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:02:01,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291873658] [2023-11-21 21:02:01,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291873658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:01,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:01,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 21:02:01,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13987628] [2023-11-21 21:02:01,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:01,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:02:01,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:02:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:01,238 INFO L87 Difference]: Start difference. First operand 473 states and 722 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-21 21:02:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:02,429 INFO L93 Difference]: Finished difference Result 926 states and 1426 transitions. [2023-11-21 21:02:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:02:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 150 [2023-11-21 21:02:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:02,438 INFO L225 Difference]: With dead ends: 926 [2023-11-21 21:02:02,438 INFO L226 Difference]: Without dead ends: 481 [2023-11-21 21:02:02,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:02:02,447 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 84 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 3771 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:02,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 3771 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 21:02:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-11-21 21:02:02,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 473. [2023-11-21 21:02:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 240 states have (on average 1.1916666666666667) internal successors, (286), 243 states have internal predecessors, (286), 198 states have call successors, (198), 32 states have call predecessors, (198), 33 states have return successors, (238), 197 states have call predecessors, (238), 196 states have call successors, (238) [2023-11-21 21:02:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 722 transitions. [2023-11-21 21:02:02,492 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 722 transitions. Word has length 150 [2023-11-21 21:02:02,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:02,492 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 722 transitions. [2023-11-21 21:02:02,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-11-21 21:02:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 722 transitions. [2023-11-21 21:02:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-21 21:02:02,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:02,497 INFO L195 NwaCegarLoop]: trace histogram [13, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:02,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:02,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:02,711 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:02,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -152415361, now seen corresponding path program 2 times [2023-11-21 21:02:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:02,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488372558] [2023-11-21 21:02:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:02,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:02,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:02:02,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982921939] [2023-11-21 21:02:02,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 21:02:02,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:02,830 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:02,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 21:02:03,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 21:02:03,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:02:03,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 21:02:03,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-21 21:02:03,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:03,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:03,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488372558] [2023-11-21 21:02:03,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:02:03,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982921939] [2023-11-21 21:02:03,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982921939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:03,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:03,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:02:03,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264125666] [2023-11-21 21:02:03,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:03,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:03,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:03,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:03,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:03,881 INFO L87 Difference]: Start difference. First operand 473 states and 722 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-21 21:02:04,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:04,692 INFO L93 Difference]: Finished difference Result 913 states and 1404 transitions. [2023-11-21 21:02:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:02:04,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) Word has length 159 [2023-11-21 21:02:04,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:04,698 INFO L225 Difference]: With dead ends: 913 [2023-11-21 21:02:04,698 INFO L226 Difference]: Without dead ends: 475 [2023-11-21 21:02:04,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:04,702 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 89 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:04,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 2832 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 21:02:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-21 21:02:04,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2023-11-21 21:02:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 241 states have (on average 1.1908713692946058) internal successors, (287), 245 states have internal predecessors, (287), 198 states have call successors, (198), 32 states have call predecessors, (198), 34 states have return successors, (246), 197 states have call predecessors, (246), 196 states have call successors, (246) [2023-11-21 21:02:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 731 transitions. [2023-11-21 21:02:04,740 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 731 transitions. Word has length 159 [2023-11-21 21:02:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:04,741 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 731 transitions. [2023-11-21 21:02:04,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-21 21:02:04,742 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 731 transitions. [2023-11-21 21:02:04,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-21 21:02:04,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:04,745 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:04,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-21 21:02:04,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:04,959 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:04,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:04,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1776659342, now seen corresponding path program 1 times [2023-11-21 21:02:04,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:04,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227476910] [2023-11-21 21:02:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:04,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:05,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:02:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324531676] [2023-11-21 21:02:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:05,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:05,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:05,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:05,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 21:02:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:05,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:02:05,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-21 21:02:05,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227476910] [2023-11-21 21:02:05,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:02:05,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324531676] [2023-11-21 21:02:05,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324531676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:05,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:05,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 21:02:05,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500448176] [2023-11-21 21:02:05,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:05,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:02:05,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:02:05,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:02:05,943 INFO L87 Difference]: Start difference. First operand 475 states and 731 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-21 21:02:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:06,902 INFO L93 Difference]: Finished difference Result 918 states and 1423 transitions. [2023-11-21 21:02:06,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 21:02:06,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 176 [2023-11-21 21:02:06,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:06,909 INFO L225 Difference]: With dead ends: 918 [2023-11-21 21:02:06,909 INFO L226 Difference]: Without dead ends: 478 [2023-11-21 21:02:06,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-21 21:02:06,913 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 96 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:06,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3400 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 21:02:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-11-21 21:02:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 476. [2023-11-21 21:02:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 242 states have (on average 1.1900826446280992) internal successors, (288), 246 states have internal predecessors, (288), 198 states have call successors, (198), 32 states have call predecessors, (198), 34 states have return successors, (246), 197 states have call predecessors, (246), 196 states have call successors, (246) [2023-11-21 21:02:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 732 transitions. [2023-11-21 21:02:06,960 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 732 transitions. Word has length 176 [2023-11-21 21:02:06,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:06,961 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 732 transitions. [2023-11-21 21:02:06,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2023-11-21 21:02:06,962 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 732 transitions. [2023-11-21 21:02:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-21 21:02:06,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:06,965 INFO L195 NwaCegarLoop]: trace histogram [13, 7, 7, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-21 21:02:06,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:07,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:07,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:07,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:07,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1062567744, now seen corresponding path program 3 times [2023-11-21 21:02:07,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:07,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625626872] [2023-11-21 21:02:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:07,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:07,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:02:07,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497292960] [2023-11-21 21:02:07,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 21:02:07,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:07,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:07,323 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:07,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 21:02:08,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-21 21:02:08,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:02:08,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 21:02:08,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-21 21:02:08,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:08,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:08,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625626872] [2023-11-21 21:02:08,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:02:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497292960] [2023-11-21 21:02:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497292960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:08,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:08,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:02:08,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769159263] [2023-11-21 21:02:08,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:08,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:02:08,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:08,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:02:08,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:02:08,352 INFO L87 Difference]: Start difference. First operand 476 states and 732 transitions. Second operand has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-21 21:02:09,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:09,042 INFO L93 Difference]: Finished difference Result 903 states and 1404 transitions. [2023-11-21 21:02:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:02:09,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 175 [2023-11-21 21:02:09,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:09,052 INFO L225 Difference]: With dead ends: 903 [2023-11-21 21:02:09,052 INFO L226 Difference]: Without dead ends: 476 [2023-11-21 21:02:09,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:02:09,057 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 0 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:09,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2250 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 21:02:09,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-21 21:02:09,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2023-11-21 21:02:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 242 states have (on average 1.1900826446280992) internal successors, (288), 246 states have internal predecessors, (288), 198 states have call successors, (198), 32 states have call predecessors, (198), 34 states have return successors, (245), 197 states have call predecessors, (245), 196 states have call successors, (245) [2023-11-21 21:02:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 731 transitions. [2023-11-21 21:02:09,095 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 731 transitions. Word has length 175 [2023-11-21 21:02:09,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:09,096 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 731 transitions. [2023-11-21 21:02:09,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-21 21:02:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 731 transitions. [2023-11-21 21:02:09,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-21 21:02:09,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:09,099 INFO L195 NwaCegarLoop]: trace histogram [13, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:09,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:09,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-21 21:02:09,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:09,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1827981406, now seen corresponding path program 4 times [2023-11-21 21:02:09,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713473514] [2023-11-21 21:02:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:09,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:02:09,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996925812] [2023-11-21 21:02:09,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 21:02:09,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:09,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:09,453 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:09,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 21:02:09,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 21:02:09,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:02:09,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 21:02:10,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-21 21:02:10,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:10,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:10,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713473514] [2023-11-21 21:02:10,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:02:10,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996925812] [2023-11-21 21:02:10,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996925812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:10,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:10,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 21:02:10,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642697082] [2023-11-21 21:02:10,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:10,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:02:10,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:10,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:02:10,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:10,095 INFO L87 Difference]: Start difference. First operand 476 states and 731 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-21 21:02:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:11,577 INFO L93 Difference]: Finished difference Result 990 states and 1536 transitions. [2023-11-21 21:02:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:02:11,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) Word has length 193 [2023-11-21 21:02:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:11,584 INFO L225 Difference]: With dead ends: 990 [2023-11-21 21:02:11,585 INFO L226 Difference]: Without dead ends: 559 [2023-11-21 21:02:11,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-21 21:02:11,589 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 70 mSDsluCounter, 3583 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:11,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 4209 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 21:02:11,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-21 21:02:11,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 541. [2023-11-21 21:02:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 278 states have (on average 1.2014388489208634) internal successors, (334), 285 states have internal predecessors, (334), 225 states have call successors, (225), 33 states have call predecessors, (225), 36 states have return successors, (285), 222 states have call predecessors, (285), 223 states have call successors, (285) [2023-11-21 21:02:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 844 transitions. [2023-11-21 21:02:11,634 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 844 transitions. Word has length 193 [2023-11-21 21:02:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:11,634 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 844 transitions. [2023-11-21 21:02:11,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (31), 3 states have call predecessors, (31), 4 states have call successors, (31) [2023-11-21 21:02:11,635 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 844 transitions. [2023-11-21 21:02:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-21 21:02:11,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:11,638 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-21 21:02:11,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-21 21:02:11,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:11,861 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:11,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:11,861 INFO L85 PathProgramCache]: Analyzing trace with hash -35618799, now seen corresponding path program 1 times [2023-11-21 21:02:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:11,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146556229] [2023-11-21 21:02:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:11,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:02:11,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866469928] [2023-11-21 21:02:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:11,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:11,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:11,998 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:12,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 21:02:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:12,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:02:12,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-21 21:02:12,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:02:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-21 21:02:13,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:13,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146556229] [2023-11-21 21:02:13,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:02:13,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866469928] [2023-11-21 21:02:13,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866469928] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:02:13,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 21:02:13,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-11-21 21:02:13,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745172953] [2023-11-21 21:02:13,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 21:02:13,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 21:02:13,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:13,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 21:02:13,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:02:13,354 INFO L87 Difference]: Start difference. First operand 541 states and 844 transitions. Second operand has 12 states, 10 states have (on average 9.1) internal successors, (91), 12 states have internal predecessors, (91), 9 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (57), 5 states have call predecessors, (57), 9 states have call successors, (57) [2023-11-21 21:02:14,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:14,909 INFO L93 Difference]: Finished difference Result 1072 states and 1689 transitions. [2023-11-21 21:02:14,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 21:02:14,909 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 9.1) internal successors, (91), 12 states have internal predecessors, (91), 9 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (57), 5 states have call predecessors, (57), 9 states have call successors, (57) Word has length 192 [2023-11-21 21:02:14,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:14,916 INFO L225 Difference]: With dead ends: 1072 [2023-11-21 21:02:14,916 INFO L226 Difference]: Without dead ends: 566 [2023-11-21 21:02:14,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 371 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-21 21:02:14,921 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 138 mSDsluCounter, 4782 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 5352 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:14,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 5352 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 21:02:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-11-21 21:02:14,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 548. [2023-11-21 21:02:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 284 states have (on average 1.204225352112676) internal successors, (342), 289 states have internal predecessors, (342), 226 states have call successors, (226), 33 states have call predecessors, (226), 36 states have return successors, (286), 225 states have call predecessors, (286), 224 states have call successors, (286) [2023-11-21 21:02:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 854 transitions. [2023-11-21 21:02:14,967 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 854 transitions. Word has length 192 [2023-11-21 21:02:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:14,968 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 854 transitions. [2023-11-21 21:02:14,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 9.1) internal successors, (91), 12 states have internal predecessors, (91), 9 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (57), 5 states have call predecessors, (57), 9 states have call successors, (57) [2023-11-21 21:02:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 854 transitions. [2023-11-21 21:02:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-21 21:02:14,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:14,972 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:15,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:15,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-21 21:02:15,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:15,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:15,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1450341305, now seen corresponding path program 2 times [2023-11-21 21:02:15,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:15,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883608692] [2023-11-21 21:02:15,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:15,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:15,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:02:15,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183698915] [2023-11-21 21:02:15,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 21:02:15,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:15,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:15,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:15,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 21:02:16,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 21:02:16,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:02:16,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 3305 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 21:02:16,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-11-21 21:02:16,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:16,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:16,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883608692] [2023-11-21 21:02:16,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:02:16,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183698915] [2023-11-21 21:02:16,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183698915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:16,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:16,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 21:02:16,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421473030] [2023-11-21 21:02:16,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:16,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:02:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:16,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:02:16,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:16,646 INFO L87 Difference]: Start difference. First operand 548 states and 854 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 9 states have internal predecessors, (77), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-21 21:02:18,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:18,355 INFO L93 Difference]: Finished difference Result 1070 states and 1672 transitions. [2023-11-21 21:02:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:02:18,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 9 states have internal predecessors, (77), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) Word has length 210 [2023-11-21 21:02:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:18,362 INFO L225 Difference]: With dead ends: 1070 [2023-11-21 21:02:18,362 INFO L226 Difference]: Without dead ends: 557 [2023-11-21 21:02:18,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-21 21:02:18,367 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 119 mSDsluCounter, 3711 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:18,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 4275 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-21 21:02:18,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-21 21:02:18,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 540. [2023-11-21 21:02:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 278 states have (on average 1.2050359712230216) internal successors, (335), 283 states have internal predecessors, (335), 225 states have call successors, (225), 33 states have call predecessors, (225), 35 states have return successors, (275), 223 states have call predecessors, (275), 223 states have call successors, (275) [2023-11-21 21:02:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 835 transitions. [2023-11-21 21:02:18,417 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 835 transitions. Word has length 210 [2023-11-21 21:02:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:18,417 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 835 transitions. [2023-11-21 21:02:18,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 9 states have internal predecessors, (77), 6 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 5 states have call predecessors, (34), 6 states have call successors, (34) [2023-11-21 21:02:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 835 transitions. [2023-11-21 21:02:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-21 21:02:18,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:18,421 INFO L195 NwaCegarLoop]: trace histogram [13, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:18,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:18,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:18,642 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:18,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:18,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1101867144, now seen corresponding path program 5 times [2023-11-21 21:02:18,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:18,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35693544] [2023-11-21 21:02:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:18,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:18,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 21:02:18,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931792054] [2023-11-21 21:02:18,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-21 21:02:18,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:18,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:18,783 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:18,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d266bad-7407-4e06-aa1c-55b97fbe7a92/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 21:02:19,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 21:02:19,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:02:19,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-21 21:02:19,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:19,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 95 [2023-11-21 21:02:19,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 83 [2023-11-21 21:02:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-21 21:02:20,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:02:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2023-11-21 21:02:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:21,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35693544] [2023-11-21 21:02:21,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 21:02:21,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931792054] [2023-11-21 21:02:21,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931792054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:02:21,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 21:02:21,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2023-11-21 21:02:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602361664] [2023-11-21 21:02:21,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 21:02:21,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-21 21:02:21,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:21,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-21 21:02:21,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-21 21:02:21,621 INFO L87 Difference]: Start difference. First operand 540 states and 835 transitions. Second operand has 15 states, 10 states have (on average 8.7) internal successors, (87), 12 states have internal predecessors, (87), 4 states have call successors, (51), 3 states have call predecessors, (51), 8 states have return successors, (52), 6 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-21 21:02:24,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]